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Transcript of Montador A
PR-25 Instruction Manual
PR-25Mounting Press
Patents are pending in U.S.A.and other countries.
Minor revisions may not be reflectedin this manual.
©1999 LECO® Corporation
Part Number 200-262
November 1999
1–2 PR-25 Introduction
This page intentionally left blank.
Introduction PR-25 1–3
1 1 Introduction
Illustrations .......................................................................... 1–4
Warranty.............................................................................. 1–5
Warning and Caution Symbols.................................................. 1–7
Interference to Other Devices .................................................. 1–8
Major Equipment and Accessories List ....................................... 1–9
Components and Accessories List ........................................... 1–12
Options .............................................................................. 1–13
Consumables ...................................................................... 1–14
Specifications...................................................................... 1–16
2 Installation
Illustrations .......................................................................... 2–2
Installation ........................................................................... 2–3
Mount Heights....................................................................... 2–7
3 Operation
Illustrations .......................................................................... 3–2
Controls and Indicators........................................................... 3–3
Operation............................................................................. 3–5
Molding Pressures and Times ................................................... 3–8
4 Maintenance
Molding Defects..................................................................... 4–3
Heater Cooler Removal........................................................... 4–5
5 Illustration
6 Index
Introduction
1–4 PR-25 Introduction
Illustrations
Figure 1–1......... PR-25 Mounting Press—Front View................1–17
Figure 2–1......... PR-25 Mounting Press—Back View ................2–5
Figure 2–2......... Heater Cooler Assembly Alignment ...............2–6
Figure 2–3......... Heater Cooler Assembly at 45o .....................2–6
Figure 2–4......... Heater Cooler Assembly Positioned Correctly ..2–6
Figure 3–1......... Pressure Gauge .........................................3–4
Figure 3–2......... Controls and Indicators...............................3–4
Figure 3–3......... Double Mount Cross-Section ........................3–9
Figure 5–1......... Interior—Left Side View ..............................5–3
Figure 5–2......... Interior—Right Side View ............................5–4
Figure 5–3......... Exploded View—1 ......................................5–5
Figure 5–4......... Exploded View—2 ......................................5–6
Figure 5–5......... Exploded View—3 ......................................5–7
Figure 5–6......... Heater Cooler Assembly ..............................5–8
Figure 5–7......... Switch Assemblies .....................................5–9
Figure 5–8......... PR-25 Flow Diagram...................................5–10
Introduction PR-25 1–5
Warranty
Equipment manufactured by LECO Corporation, St. Joseph,Michigan is warranted free from defect in material andworkmanship for a period of six months from the date ofinstallation. Equipment not manufactured by LECO is covered tothe extent of warranty provided by the original manufacturerand this warranty does not cover any equipment, new or used,purchased from anyone other than LECO Corporation. Allreplacement parts shall be covered under warranty for a periodof thirty days from date of purchase. LECO makes no otherrepresentation or warranty of any other kind, expressedor implied, with respect to the goods sold hereunder,whether as to merchantability, fitness for purpose, orotherwise.
Expendable items such as crucibles, combustion tubes,chemicals, and items of like nature are not covered by thiswarranty.
LECO's sole obligation under this warranty shall be to repair orreplace any part or parts which, to our satisfaction, prove to bedefective upon return prepaid to LECO Corporation, St. Joseph,Michigan. This obligation does not include labor to installreplacement parts, nor does it cover any failure due toaccident, abuse, neglect, or use in disregard of instructionsfurnished by LECO. In no event shall damages for defectivegoods exceed the purchase price of the goods, and LECO shallnot be liable for incidental or consequential damageswhatsoever.
All claims in regard to the parts or equipment must be madewithin ten (10) days after Purchaser learns of the facts uponwhich the claim is based. Authorization must be obtained fromLECO prior to returning any other parts. This warranty is voidedby failure to comply with these notice requirements.
1–6 PR-25 Introduction
Notice
The warranty on LECO equipment remains valid only whengenuine LECO replacement parts are employed. Since LECO hasno control over the quality or purity of consumable products notmanufactured by LECO, the specifications for accuracy ofresults using LECO instruments are not guaranteed unlessgenuine LECO consumables are employed in conjunction withLECO instruments. If purchaser defaults in making payment forany parts or equipment, this warranty shall be void and shallnot apply to such parts and equipment. No late payment orcure of default in payment shall extend the warranty periodprovided herein.
LECO Corporation is not responsible for damage to anyassociated instruments, equipment, or apparatus nor will LECObe held liable for loss of profit or other special damagesresulting from abuse, neglect, or use in disregard ofinstructions. The Buyer, their employees, agents, andsuccessors in interest assume all risks and liabilities for theoperation, use, and/or misuse of the product(s) describedherein and agree to indemnify, hold harmless, and defend theseller from any and all claims and actions arising from anycause whatsoever, including seller's negligence for personalinjury incurred in connection with the use of said product(s)and any and all damages proximately resulting therefrom.
CautionThe instrument should be operated only by technically qualifiedindividuals who have fully read and understand theseinstructions. The instrument should be operated only inaccordance with these instructions.
The operator should follow all of the warnings and cautions setforth in the manual and the operator should follow and employall applicable standard laboratory safety procedures.
LECO is a registered trademark of LECO Corporation.Windows is a registered trademark of Microsoft Corporation.Excel is a registered trademark of Microsoft Corporation.Windows 95 is a trademark of Microsoft Corporation.Windows 3.1 is a trademark of Microsoft Corporation.
Introduction PR-25 1–7
Warning and Caution Symbols
The following symbols may be found on LECO equipment ortheir components. These symbols indicate the use of specificsafety guidelines. Important safety information is highlighted inthis manual by one of the following symbols as well asWARNING and CAUTION statements. Operator and servicepersonnel must follow these instructions for personal safety andto prevent damage to the equipment.
This symbol indicates a risk of electrical shock.Refer to the manual for specific instructions.
This symbol indicates a high temperaturesurface. Refer to the manual for specificinstructions.
This symbol indicates a caution. Refer to themanual for specific instructions.
LECO equipment should be operated only by technicallyqualified individuals who have fully read and understand theinstructions detailed in this manual. The equipment should beoperated only in accordance with these instructions.
The operator should follow all of the warnings and cautions setforth in this manual and the operator should follow and employall applicable standard laboratory safety procedures.
CAUTION
!
WARNING
WARNING
1–8 PR-25 Introduction
Interference to Other Devices
This equipment has been tested and found to comply with thelimits for a Class A digital device, pursuant to Part 15 of theFCC Rules and Regulations. These limits are designed toprovide reasonable protection against harmful interferencewhen this equipment is operated in a commercial environment.This equipment generates, uses and can radiate radiofrequency energy and, if not installed and used in accordancewith the instructions, may cause interference to radiocommunications. Operation of this equipment in a residentialarea is likely to cause harmful interference in which case theuser will be required to correct the interference at his ownexpense.
Introduction PR-25 1–9
Major Equipment and Accessories List
Items listed below and repeated throughout this manual are subject to revision.Please consult the packing slip received with the instrument.
814-200-100 PR-25 115V with 1.00 inch Heater Cooler Package
1 814-200 PR-25 115V Mounting Press including:
1 200-262 Instruction Manual
1 814-200-050 Component Pack (for complete listing, seeComponents and Accessories List, page 1–12)
1 807-543 Power Cord
1 807-927-100 Heater Cooler Assembly
1 811-308 Bakelite Black Preform (1.00 inch)
1 807-922* Hazard Materials Pack (for complete listing, seeComponents and Accessories List, page 1–12)
814-200-125 PR-25 115V with 1.25 inch Heater Cooler Package
1 814-200 PR-25 115V Mounting Press including:
1 200-262 Instruction Manual
1 814-200-050 Component Pack (for complete listing, seeComponents and Accessories List, page 1–12)
1 807-543 Power Cord
1 807-927-125 Heater Cooler Assembly
1 811-304 Bakelite Black Preform (1.25 inch)
1 807-922* Hazard Materials Pack (for complete listing, seeComponents and Accessories List, page 1–12)
* Packed and shipped separately in the U.S.A. Not included with international shipments dueto shipping restrictions. These items are essential for operation. Contact your local LECOdistributor for quotation and delivery.
1–10 PR-25 Introduction
814-200-150 PR-25 115V with 1.50 inch Heater Cooler Package
1 814-200 PR-25 115V Mounting Press including:
1 200-262 Instruction Manual
1 814-200-050 Component Pack (for complete listing, seeComponents and Accessories List, page 1–12)
1 807-543 Power Cord
1 807-927-150 Heater Cooler Assembly
1 811-312 Bakelite Black Preform (1.50 inch)
1 807-922* Hazard Materials Pack (for complete listing, seeComponents and Accessories List, page 1–12)
814-300-100 PR-25 230V with 1.00 inch Heater Cooler Package
1 814-300 PR-25 230V Mounting Press including:
1 200-262 Instruction Manual
1 814-200-050 Component Pack (for complete listing, seeComponents and Accessories List, page 1–12)
1 807-928-100 Heater Cooler Assembly
1 811-308 Bakelite Black Preform (1.00 inch)
1 807-922* Hazard Materials Pack (for complete listing, seeComponents and Accessories List, page 1–12)
814-300-125 PR-25 230V with 1.25 inch Heater Cooler Package
1 814-300 PR-25 230V Mounting Press including:
1 200-262 Instruction Manual
1 814-200-050 Component Pack (for complete listing, seeComponents and Accessories List, page 1–12)
1 807-928-125 Heater Cooler Assembly
1 811-304 Bakelite Black Preform (1.25 inch)
1 807-922* Hazard Materials Pack (for complete listing, seeComponents and Accessories List, page 1–12)
* Packed and shipped separately in the U.S.A. Not included with international shipments dueto shipping restrictions. These items are essential for operation. Contact your local LECOdistributor for quotation and delivery.
Introduction PR-25 1–11
814-300-150 PR-25 230V with 1.50 inch Heater Cooler Package
1 814-300 PR-25 Mounting Press including:
1 200-262 Instruction Manual
1 814-200-050 Component Pack (for complete listing, seeComponents and Accessories List, page 1–12)
1 807-928-100 Heater Cooler Assembly
1 811-312 Bakelite Black Preform (1.50 inch)
1 807-922* Hazard Materials Pack (for complete listing, seeComponents and Accessories List, page 1–12)
* Packed and shipped separately in the U.S.A. Not included with international shipments dueto shipping restrictions. These items are essential for operation. Contact your local LECOdistributor for quotation and delivery.
1–12 PR-25 Introduction
Components and Accessories List
814-200-050 Component Pack
4 163-021 Insert
1 537-103 Tubing (15 Ft)
1 774-672 Plastic Tubing (6 Ft)
1 805-757 Fitting
1 805-758 Fitting
1 807-615 Fitting
1 811-110 Powder Bakelite (1/Lb)
807-922* Hazardous Material Pack
1 811-271 Silicon Aerosol Release Agent
* Packed and shipped separately in the U.S.A. Not included with international shipments dueto shipping restrictions. These items are essential for operation. Contact your local LECOdistributor for quotation and delivery.
Introduction PR-25 1–13
Options
800-635 Cotton Gloves (pair)
804-099 Replacement Engraver Tip (Carbide)
804-120 Electric Engraver
811-271 Silicon Release Agent, Aerosol (6 oz)
811-272 Wax Release Agent, Powder (2 oz)
811-273 Wax Release Agent, Aerosol (16 oz)
1–14 PR-25 Introduction
Consumables
• For a complete list of all LECO metallographic consumable,request catalog number 203-826.
Compression Mounting Supplies
Description Qty Color LECOPart Number
Black 811-111Red 811-118
Green 811-1235 lb
(2.27 kg)Green/Brown
811-128
Black 811-111-250
BakeliteThermosetting
Powder andPellets Powder
250 lb Drum(113 kg) Green 811-154-110
Filler Qty Color LECOPart Number
1 lb(.454 kg)
811-144Mineral
5 lb(2.27 kg)
811-145
Mineral(-20 Mesh)
5 lb(2.27 kg)
Black
811-145-120
1 lb(.454 kg)
811-140
EpoxyThermosetting
Powder
Glass5 lb
(2.27 kg)
Green811-141
Filler Qty ColorLECO
Part Number1 lb
(.454 kg)811-134
5 lb(2.27 kg)
811-135Mineral
50 lb(22.5 kg)
811-633
1 lb(.454 kg)
811-136
5 lb(2.27 kg)
811-137Glass Fiber
50 lb(22.5 kg)
Blue
811-277
1 lb(.454 kg)
811-138*
Diallyl PhthalateThermosetting
Powder
Copper5 lb
(2.27 kg)
Copper811-139*
Note
Introduction PR-25 1–15
Mold Size Qty Color LECOPart Number
Black 811-301
Red 811-3131.00 inch 100
Green 811-325
Black 811-305
Red 811-3171.25 inch 100
Green 811-32
Black 811-309
Red 811-321
PreformsThermosetting
1.50 inch 100
Green 811-333
Qty Color LECOPart Number
1 lb(.454 kg)
811-132
5 lb(2.27 kg)
811-133
Lucite ®
ThermoplasticPowder
Lucite is aregistered
trademark ofDUPONT
50 lb(22.5 kg)
Clear(For
TransparentMounts)
811-625
1–16 PR-25 Introduction
Specifications
The PR-25 is an automatic mounting press that incorporates aunique, pneumatic-hydraulic system. The PR-25 incorporatesan integral, 1200-watt heater cooler and a larger mold heightto allow safe, rapid, and reliable production of mounts.
Dimensions
Height ............................................27.00 inches (686 mm)
Width.............................................14.50 inches (368 mm)
Depth ............................................15.50 inches (394 mm)
Electrical Power Requirements
814-200 .........................................115 VAC, ±10%, 50/60 Hz, 11 Amps
814-300 .........................................230 VAC, ±10%, 50/60 Hz, 6 Amps
Gases Required ..................................Compressed Air, 85 psi (5.86 bars),source must be water and oil free
Other Utilities Required ......................Continuously flowing water supply andnon-restricting gravitational drain.
Introduction PR-25 1–17
Figure 1–1PR-25 Mounting Press—Front View
Installation PR-25 2–1
2 Illustrations .......................................................................... 2–2
Installation ........................................................................... 2–3
Mount Heights....................................................................... 2–7
Installation
2–2 PR-25 Installation
Illustrations
Figure 2–1......... PR-25 Mounting Press—Back View ................2–5
Figure 2–2......... Heater Cooler Assembly Alignment ...............2–6
Figure 2–3......... Heater Cooler Assembly at 45o .....................2–6
Figure 2–4......... Heater Cooler Assembly Positioned Correctly ..2–6
Installation PR-25 2–3
Installation
ELECTRICAL SHOCK HAZARDThis equipment uses 115 or 230 VAC powersupplies. Contact with these voltages can belethal. Do not apply power until instructed todo so.
1. Place the instrument on a work surface that has aconvenient air supply, water supply, electrical powersupply, and gravitational drain. Refer to the Specificationssection, page 1–16, for more information.
2. Connect the air supply to the air inlet on the back of thePR-25 (figure 2-1, page 2–5).
3. Turn the regulator control knob, located on the front panelof the PR-25, all the way to the left (counterclockwise).
4. Turn the ram down knob clockwise to the full closeposition.
POSSIBLE JACK DAMAGEDo not over turn the knob. Turning the knob toofar could result in damage to the jack.
5. Turn the air supply on and set it for 85 psi.
6. Turn the ram height selector switch to the up position.
7. Adjust the regulator control knob for the mold size to beused. Tube push rod should be 1 to 2 inches above theunit.
8. Thread the bottom ram onto the screw that attaches theram to the push rod.
• Make sure that the bottom ram, heater cooler assembly,and mold assembly are clean to assure proper fit and easeof assembly.
WARNING
CAUTION
!
Note
2–4 PR-25 Installation
9. Hold the heater cooler assembly in position over thebottom ram (figure 2-2, page 2–6, and rotate the heatercool assembly 45-degrees to the left (figure 2-3,page 2–6).
• This rotation matches the collar with the bottom moldassembly configuration.
10. Once the heater cooler assembly and the collar are alignedproperly, push the heater cooler assembly down into thecollar (figure 2-4, page 2–6).
11. When the heater cooler assembly is down into the collarcorrectly, turn the heater cooler assemblycounterclockwise until it locks in position. The heatercooler assembly is now captive and cannot rotate.
• The indicator lights should be facing the front of the unit.
12. Connect the electrical outlet connector (already connectedto the PR-25) to the electrical inlet on the back of theheater cooler assembly.
POSSIBLE MACHINE DAMAGETo prevent overheating, make sure thisconnector is on all the way and the locking ring isengaged.
13. Connect the water tubing that is already connected to therear of the PR-25 to the back of the heater coolerassembly (figure 2-1, page 2–5).
14. Connect the water supply tubing between the water supplyinlet on the rear of the PR-25 and the facility water supply.
15. Connect the drain tubing to the water drain outlet on therear of the heater cooler and slop the tubing downward tothe laboratory drain.
CAUTION
!
Note
Note
Installation PR-25 2–5
Figure 2–1PR-25 Mounting Press—Back View
ELECTRICAL CONNECTOR
807-538HANDLE HOLDER
807-543 115V807-551 230V
POWER CORD
807-927-100 (115V, 1.00-INCH)807-927-125 (115V, 1.25-INCH)807-927-150 (115V, 1.50-INCH)807-928-100 (230V, 1.00-INCH)807-928-125 (230V, 1.25-INCH)807-928-150 (230V, 1.50-INCH)HEATER COOLER ASSEMBLY
HEATER COOLERWATER INLET
DRAIN OUTLET
772-614WATER OUTLET
ELBOW
AIR INLET
537-103WATER SUPPLY
TUBING(TO FACILITY
WATER SUPPLY)
774-672DRAIN TUBING
(TO FACILITY DRAIN)
WATER INLET
2–6 PR-25 Installation
Figure 2–2Heater Cooler Assembly Alignment
Figure 2–3Heater Cooler Assembly at 45o
Figure 2–4Heater Cooler Assembly Positioned Correctly
BOTTOM RAM(SELECT PROPER
RAM FOR HEATER / COOLER1.25”, 1.50”, OR 2.00”)
807-539MOLD COLLAR
LOCKING PIN HOLELOCATION ON MOLD
ASSEMBLY
ALIGNMENT COUPLING
LOCKING PIN CONSISTING OF:807-541 BODY
803-456 SPRING807-540 COLLAR
807-542 KNOB
HYDRAULICCYLINDER ROD
Installation PR-25 2–7
Mount Heights
For relatively consistent mount heights, the graph below listssuggested parameters. This graph represents cured mountheights for mounting media only. The volume of the sample hasnot yet been considered. To compensate for sample volume,the following table is given as an example.
Mold DiameterPowder orPremoldWeight
SampleDimensions
Mold Height
1.00 inch(2.54 cm)
8 grams 1/2 d x 3/8 t 5/8 inch
1.25 inch(3.18 cm)
13.5 grams 5/8 d x 3/8 t 5/8 inch
1.50 inch(3.82 cm)
18.6 grams 15/16 d x 3/8 t 5/8 inch
0 5 10 15 20 250
0.5
1.0
1.5
MOUNTINGHEIGHT
(INCHES)
WEIGHT (GRAMS)POWDER OR PREFORMS
Operation PR-25 3–1
3 Illustrations .......................................................................... 3–2
Controls and Indicators........................................................... 3–3
Operation............................................................................. 3–5
Molding Pressures and Times ................................................... 3–8
Operation
3–2 PR-25 Operation
Illustrations
Figure 3–1......... Pressure Gauge .........................................3–4
Figure 3–2......... Controls and Indicators...............................3–4
Figure 3–3......... Double Mount Cross-Section ........................3–9
Operation PR-25 3–3
Controls and Indicators
• Refer to figure 3-2, page 3–4, for control and indicatorlocations.
Ram Down Knob—Turning the knob clockwise closed thehydraulic cylinder. Turning the knob counterclockwise releasesthe applied pressure.
Ram Control Knob—This knob is used to raise and lower theram piston.
Pressure Regulator Control Knob—Used for adjusting moldpressure. Rotate clockwise to increase pressure,counterclockwise to decrease pressure. Use the outside lockring to lock unit at desired pressure.
Pressure Gauge—Indicates the proper pressure setting for eachavailable mold size (figure 3-1, page 3–4). The inner scale isfor the 1.00 inch mold assembly; the middle scale is for the1.25 inch mold assembly; the out scale is for the 1.50 inchmold assembly. The red dots represent 4200 psi within therespective mold assemblies. All of the scales are represented in"psi x 1000" and "bars x 70."
Timer—The timer is a mechanical-type timer and is adjustablefrom 0 to 20 minutes. There will be an audible ring when presettime has expired.
Power Light—This red light, located on the heater coolerassembly, indicates that power is on to the heater coolerassembly.
Heater Light—This amber light will only be lit when the heaterelements are on and working. The heater elements areregulated by a thermostat, so the heater light will flicker on andoff periodically.
Cool/Heat Knob—Used as a power switch for the heater cooler.Turn clockwise to heat; turn counterclockwise to cool.
Note
3–4 PR-25 Operation
Figure 3–1Pressure Gauge
Figure 3–2Controls and Indicators
807-540COLLAR
807-426 - 230V806-951 - 115V
AMBER INDICATORHEAT
807-427 - 230V806-952 - 115VRED INDICATOR
POWER
807-533PRESSURE
GAUGE
808-711TIMER KNOB
808-713RAM DOWN
KNOB
808-712COOL/HEAT
KNOB
803-435PRESSURE
REGULATOR
807-573RAM CONTROL
Operation PR-25 3–5
Operation
• All installation steps must be completed before operatingthis instrument.
• Hydraulic fluid may have been dispersed in shipment.Before using:
1. Set the pressure control knob clockwise to full close.
2. Operate the pressure handle until the mold cylinder isfully extended.
3. Set the pressure control knob one full turncounterclockwise and push the mold cylinder down innecessary.
4. Repeat this process several times.
• LECO recommends using the silicone release agent for thefirst 25 mounts, thereafter, only occasionally.
1. Make sure the instrument air and water supplies areturned on, and the power on/off switch is in the offposition.
• To avoid the cottonball effect when processing Lucite(thermoplastic) mounts, disconnect the water inlet on theback of the mounting press via the quick disconnect prior tomaking a mount. Process mounts as outlined and allowgradual cooling. Reconnect the water inlet when processingthermosetting mounting media.
2. Plug the unit into the proper facility power. Refer to theSpecifications section, page 1–16, for additionalinformation.
3. Before making a mount, test the unit as follows:
A. Turn the power switch to heat.
B. Set the timer to 5 minutes. The indicator lights on theheater assembly should immediately light. The powerlight should stay lighted throughout the entire heatcycle. The heater light should regulate with thetemperature of the heater.
C. Once the heat cycle is expired, turn the power switchto the cool position.
Notes
Note
3–6 PR-25 Operation
D. Set the timer to 5 minutes.
E. During the cooling cycle, check the rear fittingconnections for leaks. If there are no leaks, the unitis ready for operation.
4. With the top enclosure removed, rotate the pressure knobapproximately 1 full turn counterclockwise to assure thatthe bottom ram is in the down position.
5. Turn the ram down knob clockwise until the closed positionis reached.
6. Turn the ram control selector knob to the up position.
7. Position the sample on the bottom ram.
8. Rotate the ram down knob counterclockwise one full turnto place the bottom ram in the down position.
9. Add mounting media (powder and preform). Refer tofigure 3-3, page 3–9, for additional information.
10. Thread the top enclosure all the way down onto the moldcylinder and then back to top enclosure off one-quarterturn.
• It is very important to back the top enclosure off one-quarter turn. This will reduce the stress on the moldcylinder threads and eases the removal of the topenclosure.
11. Rotate the ram down knob clockwise to the full closeposition.
12. Operate the pressure handle to the desired pressure forthe mold assembly being used.
POSSIBLE MACHINE DAMAGEDo not allow pressure to reach overload range.Pressure can be adjusted using the front panelpressure control knob.
• There will be a definite decrease in pressure as thethermosetting materials are heated through the curingstage. Pressure must be maintained throughout this stage.Pressure will become constant when cure stage temperatureis reached.
Note
CAUTION
!
Note
Operation PR-25 3–7
13. Set the timer to the desired heating time.
14. Once the heat cycle time has expired, turn the powerswitch from the heat position to the cool position.
15. Set the timer to the desired cooling time.
• Continue to keep mold pressure stable.
16. Once the cooling cycle time has expired, rotate the ramdown knob counterclockwise one turn to release thepressure inside the mold cylinder.
17. Turn the ram control selector knob to the neutral position.
18. Unscrew the top enclosure from the mold cylinder. Thespring inside the top enclosure will hold the threads apartthroughout the ejection process.
19. Rotate the ram down knob clockwise to full closure.
20. Turn the ram control selector knob to the up position.
21. Remove the top enclosure and place it in the holder ring.
HIGH TEMPERATURE HAZARDMounted specimens may be hot.LECO recommends wearing hear resistant gloveswhen removing mounted specimens.
22. Remove mounted specimens.
23. After each mount, clean the flashing off of the bottom ramto ensure movement of the bottom ram inside the moldcylinder.
Note
WARNING
3–8 PR-25 Operation
Molding Pressures and Times
Time(Minutes)
MountingMaterial Temperature Pressure 1.25 inch
(3.18 cm)Mold
1.50 inch(3.82 cm)
Mold
2.00 inch(5.08 cm)
Mold
Thermosetting Powder Preform Powder Preform Powder
Bakelite4200 psi
(289.58 bars) 8 7 10 8 12
Epoxy1000 to 2000 psi(68.95 to 137.89
bars)8 N/A 10 N/A 12
DiallylPhthalate
285oF to 300oF(140oC to 150oC)
3000 psi(206.84 bars) 9 N/A 12 N/A 12
ThermoplasticTime
(Minutes)
Heat285oF to 300oF
(140oC to 150oC)
100 psi(6.89 bars) 30
LuciteCool
100oF(38oC)
4200 psi(289 bars)
30 Air Cool20 Water Cool
Operation PR-25 3–9
• When making a double mount, make sure that the powdermedia is approximately even across the cylinder beforeinserting the spacer and the top enclosure. This will reducethe forces on the rams and spacer, which in turn will makeit easier to remove the sample
Figure 3–3Double Mount Cross-Section
HANDLE TOP807-842 - 1.25"807-843 - 1.50"807-844 - 2.00"
PIGGY BACK SPACER807-919 - 1.25"807-920 - 1.50"807-921 - 2.00"
MOUNT
Note
Maintenance PR-25 4–1
4 Molding Defects..................................................................... 4–3
Thermosetting Materials ................................................ 4–3
Thermoplastic Materials ................................................. 4–4
Heater Cooler Removal........................................................... 4–5
Maintenance
4–2 PR-25 Maintenance
This page intentionally left blank.
Maintenance PR-25 4–3
Molding Defects
Thermosetting MaterialsDefect Cause Remedy
Section too large for moldarea.Sharp corner on specimen.
Reduce specimen size.Use larger mold size.Eliminate sharp corners ifpossible.
Material has absorbedmoisture.Gases released bychemical reaction.
Use preheated powderor preforms.Momentarily releasepressure during flowstage.
Poor adhesion to samplesurface.Excessive shrinkage atinterface.
Use lower moldingtemperature.
Insufficient pressureand/or cure time.
Adjust molding pressure.Increase cure time.
Insufficient pressureand/or cure time.Curing or powder particlesprior to flow stage.
Adjust pressure and/orcure time.Rapidly seal mold closureand apply pressure toeliminate localized curing.
Excessive moldtemperature.
Decrease moldtemperature.Momentarily releasepressure during flowstage.
• If mold temperature is too high, the following difficultiesmay also be encountered:
1. Mounts sticking to mold surface regardless of finish orapplication or release agent.
2. Dull surfaces on mounts.
3. Excessive flash.
4. Mold staining.
Note
4–4 PR-25 Maintenance
Thermoplastic MaterialsDefect Cause Remedy
Center portion of mediumdid not reach maximumtemperature prior to curestage.
Increase holding time atmaximum temperature.
Inherent stresses relievedupon or after ejection ofmount.
Cool to a lowertemperature prior toejection.Decrease pressure duringcure stage.Stress relieve mounts inboiling water.
Maintenance PR-25 4–5
Heater Cooler Removal
• Remove the heater cooler assembly only when the unit is atambient temperature. Due to thermal expansion, the heatercooler may slide off the mold cylinder if removed whenwarm. If this happens, warm the heater cooler and adjust itback onto the mold cylinder.
1. Before removing the heater cooler assembly, spray themold cylinder with silicone release agent.
2. Run the bottom ram up and down inside the mold cylindera few times. This will help release the mold assembly fromthe bottom ram and will also treat the inside diameter ofthe mold cylinder for storage.
3. Install the top enclosure onto the heater cooler assemblyand set the mold pressure to zero.
4. Disconnect all connections from the rear of the heatercooler assembly.
5. Pull the locking pin out and turn the assembly to a 45degree angle (figure 2-3, page 2-6).
6. Place the ram control lever in the up position.
7. Slowly increase the pressure until you hear the pumpcycling slowly. Do not pull up on the heater coolerassembly shroud. Let the pump do the work.
8. If the heater cooler assembly is properly located, it shouldbegin to extend out of the collar. Once the base of theheater cooler assembly is out of the collar, turn the heatercooler assembly back to its center position (figure 2-4,page 2-6).
9. Position the ram control lever to the down position. Whenthe pump stops running, the ram is out of the moldcylinder and the heater cooler assembly can now beremoved.
Note
Illustrations PR-25 5–1
5 Figure 5–1......... Interior—Left Side View ..............................5–3
Figure 5–2......... Interior—Right Side View ............................5–4
Figure 5–3......... Exploded View—1 ......................................5–5
Figure 5–4......... Exploded View—2 ......................................5–6
Figure 5–5......... Exploded View—3 ......................................5–7
Figure 5–6......... Heater Cooler Assembly ..............................5–8
Figure 5–7......... Switch Assemblies .....................................5–9
Figure 5–8......... PR-25 Flow Diagram...................................5–10
Illustrations
5–2 PR-25 Illustrations
This page intentionally left blank.
Illustrations PR-25 5–3
Figure 5–1Interior—Left Side View
814-006CYLINDER MOUNT
AND BEARINGASSEMBLY
814-001AIR
CYLINDER
807-593TOP PANELASSEMBLY
807-533HYDRAULICPRESSURE
GAUGE
807-534ADAPTERFITTING
803-435PRESSURE
REGULATOR
807-502SUPERSTRUCTURE
ASSEMBLY
190-018SHOULDER
SCREW807-564
4 WAY AIRPILOT VALVE
805-798-110ROTARY SWITCH
807-525LOWER FRONT
PANEL ASSEMBLY
5–4 PR-25 Illustrations
Figure 5–2Interior—Right Side View
803-254MECHANICAL
TIMER
807-573PNEUMATICCONTROL
VALVE
807-888FILTER
807-523 (115V)807-550 (230V)TIMER RELAY
807-520 (115V)807-548 (230V)WATER VALVE
ASSEMBLY
805-798-1102 POSITION
ROTARY SWITCH
Illustrations PR-25 5–5
Figure 5–3Exploded View—1
807
-567
FIT
TIN
G
807-
598
INS
UL
AT
ION
193-
110
WA
SH
ER
(7 R
EQ
'D)
193
-127
WA
SH
ER
(7 R
EQ
'D)
190-
269
SC
RE
W(1
0 R
EQ'D
)80
7-59
5R
IGH
T PA
NE
L
767-
866
FITT
ING
603-
061
FIT
TIN
G
544-
184
RE
DU
CE
R 807-
581
PL
UG
772-
710
RE
DU
CE
R
800-
299
FITT
ING
(W/ N
UT) 80
7-54
3 (1
15V
)80
7-55
1(23
0V)
PO
WE
R C
OR
D
804-
711
AD
AP
TE
R
900-
259
NU
TF
ITTI
NG
807-
591
RE
AR
PA
NE
L
780-
397
FIT
TIN
G
807
-47
1F
ITTI
NG
772-
614
FITT
ING
807
-598
INS
UL
ATI
ON
807-
594
LE
FT P
AN
EL
807-
533
GA
UG
E(W
/HA
RD
WA
RE
)
807-
596
UP
PE
R F
RO
NT
PAN
EL 80
7-53
4N
IPP
LE
807-
888
AIR
FIL
TE
R80
3-43
5R
EGU
LA
TOR 80
7-57
3C
ON
TR
OL
VA
LVE
(W/ N
UT)
807-
566
FIT
TIN
G(2
RE
Q'D
)
193-
113
WA
SH
ER
193-
055
WA
SH
ER
(2 R
EQ
’D)
193-
055
WA
SHE
R(2
RE
Q’D
)
193-
110
WA
SH
ER
(3 R
EQ
’D)
190-
824
SC
RE
W(3
RE
Q’D
)
803-
254
TIM
ER
(W/ N
UT
)
805-
798-
110
SE
LEC
TO
R S
WIT
CH
194-
055
NU
T(4
RE
Q'D
)
194-
110
NU
T(3
RE
Q'D
)
194-
056
NU
T(2
RE
Q'D
)
194-
056
NU
T(2
RE
Q'D
)
807
-631
SL
EE
VE
808-
523
RE
LIE
F VA
LVE
807-
565
FIT
TIN
G(2
RE
Q'D
)
808-
711
KN
OB
(W/ S
CR
EW
S)
808-
713
KN
OB
808-
712
KN
OB
807-
887
SH
AF
T(W
/ HA
RD
WA
RE
)
190-
886
SC
RE
W(4
RE
Q'D
)
807-
525
LO
WE
RF
RO
NT
PAN
EL
190-
926
SC
RE
W(2
RE
Q'D
)
778-
523
FITT
ING
(3 R
EQ
'D)
(OP
TIO
NA
L)W
AS
HER
(2 R
EQ
'D)
193-
008
WA
SH
ER
(3 R
EQ'D
)
801-
238
PL
UG
5–6 PR-25 Illustrations
Figure 5–4Exploded View—2
780-970LEVELING FOOT
(4 REQ'D)
193-010WASHER(2 REQ'D)
193-033WASHER(4 REQ'D)
193-108WASHER(4 REQ'D)
190-929SCREW
(2 REQ'D)
190-753SCREW
(4 REQ'D)
807-590BASE
807-565FITTING
(3 REQ'D)
589-855FITTING
800-271MUFFLER(2 REQ'D)
602-167ELBOW
(2 REQ'D)
190-750SCREW
193-127WASHER
807-523 (115V)807-550 (230V)
RELAY
807-521 (115V)807-549 (230V)
SOLENOID
807-522FILTER
193-110WASHER
773-41RESISTOR
807-5644 WAY VALVE
190-750SCREW
(2 REQ'D)
778-523FITTING
807-763VALVE
778-523FITTING
(2 REQ'D)
807-539COLLAR
807-575COLLAR WASHER
807-593TOP PANEL
807-542PLUNGER
807-538HANDLE HOLDER
806-764BOX HOLDER
193-127WASHER(2 REQ'D)
190-269SCREW
(2 REQ'D)
190-324SCREW
(4 REQ'D)
807-447WARNING LABEL
193-127WASHER(2 REQ'D)
193-110WASHER(2 REQ'D)
AB
Illustrations PR-25 5–7
Figure 5–5Exploded View—3
814-004TOP PLATE
807-565FITTING
807-565FITTING
190-643SCREW
(4 REQ'D)
190-643SCREW
(4 REQ'D)
807-504SUPPORT ROD
(4 REQ'D)
814-002CYLINDER MOUNT
(2 REQ'D)
814-001AIR CYLINDER
803-234EYE BOLT
807-511SPRING
(4 REQ'D)
190-908SCREW
(2 REQ'D)
193-033WASHER(2 REQ'D)
193-058WASHER(2 REQ'D)
807-508PUSH ROD
190-018SCREW
807-506JACK CLEVIS
194-109NUT
807-505JACK
190-837SCREW
814-003BEARING(2 REQ'D)
190-908SCREW
(4 REQ'D)
807-510SCREW
(8 REQ'D)
807-509SPRING PLATE
807-503BOTTOM PLATE
808-499CYLINDERRELEASEADAPTOR
773-705ROLL PIN
807-764LIMIT SWITCH
(2 REQ'D)
190-881SCREW
(2 REQ'D)
193-033WASHER(2 REQ'D)
194-056NUT
(4 REQ'D)
807-761BRACKET
193-008WASHER(4 REQ'D)
190-706SCREW
(4 REQ'D)
194-162JAM NUT
190-353SCREW
775-322CAP NUT
773-661FITTING
(2 REQ'D)
773-661FITTING
(2 REQ'D)
RUBBER WASHERINCLUDED WITH FITTING
RUBBER WASHERINCLUDED
WITH FITTING
782-401ELBOWFITTING
5–8 PR-25 Illustrations
Figure 5–6Heater Cooler Assembly
806-549PANEL TOP
807-643BASE HEATER COOLER
ASSEMBLY
190-229SCREW
(4 REQ'D)
807-932-100 - 1.00-INCH807-650-125 - 1.25-INCH807-650-150 - 1.50-INCH
MOLD CYLINDER ASSEMBLY
807-645-030 - 1.00-INCH807-645-030 - 1.25-INCH807-645-030 - 1.50-INCH
HEATER COOLER
190-279SCREW
(4 REQ'D)
193-055WASHER(4 REQ'D)
804-733CONNECTOR
194-055NUT
(4 REQ'D)
194-056NUT
(2 REQ'D)
807-644TRIM
807-426 - 230V806-951 - 115V
AMBER INDICATOR
807-427 - 230V806-952 - 115VRED INDICATOR
190-624SCREW
(4 REQ'D)
193-004WASHER(4 REQ'D)
806-956L350
THERMOSTAT
806-958L425
THERMOSTAT
807-656 - 1.00-INCH807-656 - 1.25-INCH807-659 - 1.50-INCHTOP ISOLATION RING
RAM TOP(PART OF MOLD CYLINDER ASSEMBLY)
807-555BOTTOM
ISOLATION RING
521-028BUTTON PLUG
770-233ROLL PIN(2 REQ'D)
774-016HANDLE KNOB
(2 REQ'D)
807-842HANDLE
TOP
190-851SCREW
(2 REQ'D)
807-841SLIDESHAFT
806-987SPRING
807-839TOP PLUG
Illustrations PR-25 5–9
Figure 5–7Switch Assemblies
24 VDC INDICATOR LIGHT806-932 CLEAR LENS CAP
806-769 LAMPNO RESISTORS
120VAC INDICATOR LIGHT806-952 RED LENS CAP
806-768 LAMP1 RESISTOR
806-951 AMBER LENS CAP806-768 LAMP1 RESISTOR
240VAC INDICATOR LIGHT807-427 RED LENS CAP
806-768 LAMP2 RESISTORS
807-426 AMBER LENS CAP806-768 LAMP2 RESISTORS
5–10 PR-25 Illustrations
Figure 5–8PR-25 Flow Diagram
807-888AIR FILTER
803-435PRESSURE
REGULATOR
807-7643 WAY EXT
VALVE
807-7643 WAY EXT
VALVE
AIR IN
807-573PNEUMATICCONTROL
VALVE
808-52375 PSI
RELIEF VALVE
807-763‘AND’ VALVE
807-564AIR PILOT
4 WAY VALVE
814-001CYLINDER
14
14
13
13
2
1
3
Index PR-25 6–1
6 C
Caution Symbols ............................................................... 1–7
Caution, Operator.............................................................. 1–6
Component Pack............................................................... 1–12
Components and Accessories List ......................................... 1–12
Compression Mounting Supplies........................................... 1–14
Consumables.................................................................... 1–14
Controls and Indicators ...................................................... 3–3
D
Dimensions ...................................................................... 1–16
Double Mount Cross-Section ............................................... 3–9
E
Electrical Power Requirements............................................. 1–16
G
Gases Required................................................................. 1–16
H
Hazardous Material Pack..................................................... 1–12
Heater Cooler Assembly ..................................................... 5–8
Heater Light ..................................................................... 3–3
I
Illustrations List ................................................................ 1–4
Installation....................................................................... 2–3
Interference to Other Devices ............................................. 1–8
M
Major Equipment and Accessories List ................................... 1–9
Molding Defects................................................................ 4–3
Mount Heights.................................................................. 2–7
Index
6–2 PR-25 Index
N
Notice, Operator ............................................................... 1–6
O
Options ........................................................................... 1–13
P
Power Light ...................................................................... 3–3
Pressure Gauge................................................................. 3–3
Pressure Regulator Control Knob.......................................... 3–3
S
Specifications ................................................................... 1–16
Switch Assemblies............................................................. 5–9
T
Thermoplastic Materials ...................................................... 4–4
Thermosetting Materials ..................................................... 4–3
U
Utilities Required............................................................... 1–16
W
Warning Symbols .............................................................. 1–7
Warranty......................................................................... 1–5