Ident-No. 550 844 1 March 2016

Screw pumps

TRF Maintenance and Service Instruction

This instruction is valid for all TRF pump models shown on page 2

Contents Page

List of components Exploded view/Ordering code Service intervals Inspection of rotors and shaft seal Sectional view Dismantling Reassembly

2 3 3 4 5 6 9

2 Ident-No. 550844 March 2016

List of components Valid for all TRF pumps with sizes: 660, 940, 1300, 1700, 2500. With code for shaft seal: 18.4 V or 18.6 T.

Components included in Spare part kit:

Pos No Denomination Qty TRF5 (G053) Note

113 Key 1 1020 Power rotor (CW-rot.) completly 1

122 Ball bearing 1 x 130 Support ring 1 x 131 Retaining ring 1 x 132 Support ring 1 x 202 Idler rotor (CW-rot.) 2 401 Pump body 1 4240 Tuning element 1 424 Cover 424A Gasket 1 x 425 Screw 4 429 Spindle 1 429A Pin 1 430 Piston 1 432 Pin 1 437 O-ring 1 x 451 Screw 4-6 451A Washer 1 453 Screw 8 455 Screw 8 455A Washer 1 462 Plug 1 462A Washer 1 x 463 Plug 1 463A Washer 1 x 480 Valve housing 1 501 Front cover 1 506 O-ring 1 x 509 Mechanical seal 1 x 509A Rotating ring 1 x 509B Seal 1 x 509C Rubber ring 1 x 509D Washer 1 x 509E Spring 1 x 509F O-ring 1 x 520 Bearing cover 1 520A O-ring 1 x 520B Pin 1 521 Screw 4 521A Washer 4 537 Screw plug 1 537A Washer 1 x 556 Gasket 1 x 6000 Valve cartridge 1 6010 Valve cover compl. 1 602 Gasket 2 603 O-ring 1 x 605 O-ring 1 x 608 Valve spindle 1 609 Washer 1 610 Ball bearing 1 x 612 Regulating nut 1 614 Valve piston 1 615 Spring 1 x 622 Nut 1 623 Ball bearing 1 x

Ident-No. 550844 3 March 2016

Before commencing any work, read this instruction carefully! Failure to comply with these in-structions may cause damage and personal injury!

For more information about technical data and performance we refer to the TRF Product description. Fore more information about the pumps installation, Start-up and trouble shooting we refer to the "Installation and Start-up instruction" Ident no. 550 802 for low pressure pumps.

Exploded view Fig. 2

Ordering code Spare part set

Pump size 660 940 1300 1700 2500

TRF5 70194666 70194667 70194668 70194669 70194670

Recommended spare parts kit Every shutdown for service of a plant is costly. The time for repair should therefore be limited to a minimum which can be accomplished by keeping a spare pump. The changed pump can later be repaired at a suitable place and can then be used as a spare pump.. For maintenance the following spare parts kits are recommended: Kit Tob e used for TRF5

Repair after damage or greater wear.

Service intervals The intervals for inspection and replacement of wear parts vary greatly with the properties of the pumped liquid and can only be determined by experience. Except for the ball bearing, all internal parts of the TRF-pump are lubricated by the pumped liquid. Pumping liquid which contain abrasive materials, or liquid that is corrosive, will significantly reduce service life and call for shorter service intervals. Wear in the pump will normally show as unnormal: • Vibration • Leakage • Noise • Reduction in flow/pressure • Loss of capacity We recommend planned inspection and overhaul at regular intervals, not exceeding 3 years. It is recommend-ed always to have the spares included in minor spare part kit TRF5 available..

Ident-No. 550844 4 March 2016

Inspection of rotors To reach the idler rotors in a quicker way than described in the dismantling section, loosen the rear cover (480) with valve. Screw out the idler rotors backwards. Internal clearances in the pump, which are vital for its proper function, may have been affected by wear. Acceptable wear can be determined only by experience of the actual application. As a rule of thumb the following max clearance values may apply: • Between rotor and bores: 0.2 mm • Between rotor flanks: 0.4 mm For light duties (low pressure, medium viscosity) even bigger clearances may be acceptable but for low visc./high pressure duties the limit will be lower. Also watch if there are major scratches on these parts..

Inspection of shaft seal As the seal faces of a mechanical shaft seal are lubricated by the fluid a certain leakage will always be present. Ten drops per hour can be considered as acceptable. An external visual inspection of the pump is advisable at least every two days to assure that the shaft seal is not leaking too much. Excessively leaking shaft seals should be changed without delay, as the leakage normally will grow worse and cause additional damage. Follow the instructions in the dismantling/ reassembly session. When working with a shaft seal, cleanliness is of utmost importance. Avoid touching the seal faces. If necessary, the seal faces should be cleaned immediately prior to assembly, using a dust free cloth and clean solvent. For lubrication of shaft seal read instructions in fig 24.

In case of failure for a system with elevated pressure, fluid jets may cause injury and/or damage.

Oil leakage may make the floor slippery and cause personal injury.

When handling liquids which may involve fire hazards appropriate precautions to avoid danger are to be taken.

When handling liquids that may harm skin use gloves and/or protective clothing.

If the pumps operating temperature exceeds 60°C let the pump cool off before any service, maintenance or dismantling work is commenced to avoid burn injury.

All work carried out on the pump has to be performed in such a manner that risks for personal injury are observed!

Ident-No. 550844 5March 2016

Pump- size d L 660 45 150 940 51 150

1300 66 150 1700 66 150 2500 66 150

Mounting sleeve dimensions (mm)

Crow- bar

Plastic mallet Oilcan

Grease

Washer Ø70

Threaded barUNC 5/8“

Fig. 3

Hook- spanner Slide calliper

Screwdriver

Mounting sleeve

Puller

Allen key Pliers

List of tools necessary for dismantling and reassembly

Sectional view

Tuning valve for pump size 660, 940

Tuning valve for pump size 1300, 1700, 2500

Fig. 4

6 Ident-No. 550844 March 2016

Dismantling

For most installations repair can be done with the pump in place by removing the motor.

Turn the electricity OFF.

Close the valves. Disconnect the electric motor. For horizontal installation drain the pump by loosen screws 453 3-4 turns and loosen 480 valve housing.

Pump and/or motor should be lifted with straps securely attached so that the centre of gravity is located in order to avoid tipping.

Use appropriate vessels to collect oil spillage when opening the pump.

ATTENTION

Fig. 5

Be careful when the threaded part of the rotor passes the bore in the cover.

ATTENTION

Loosen and remove screws 521. Pull out the power rotor 1020 with the help of coupling half or an eye bolt fitted in the power rotor.

Fig. 6

Ident-No. 550844 7 March 2016

Abb. 8

Passfeder 113 entfernen.

Fig. 7

Note the axial position of the coupling half. Release the stop screw.

Fig. 8

Remove the coupling half.

Fig. 10

Carefully slide the rotary schaft seal parts 509a, c, d, e upwards.

Pull the cover 520 upwards.

113

Fig. 9

Remove the key 113.

Fig. 12

Remove the ball bearing 122 from the rotor 1020 with a three legged puller.

Fig. 11

Remove the washer 130. Remove the circlip 131 with applier. Remove the washer 132.

8 Ident-No. 550844 March 2016

Fig. 15

Loosen the screws 425 and pull the complete tun-ing device straight upwards.

Carefully slide the idle rotors out of the pump body.

Tuning device

425

202

Loosen the screws 451 and remove the front-cover 504 with its o-ring 506 from the pump body 401.

Fig. 14

451 501

506

401

Fig. 16

Valve insert

Reassemble in opposite order. Loosen the 8 bolts 453 in order to remove the back cover 480. Reassemble in opposite order.

Loosen the 4 screws 455 & 455a in order to pull out the complete valve insert.

Valve insert

453

603

455 & 455a

Press down the complete stationary part oft the shaft seal 509b & 509f out the end cover 520 by means of a Teflon piece that fits smoothly. NOTE: The other end oft he Teflon piece should fit on the opposite side of 509b and is used lager on when 509b is pressed into the end cover 520 again..

Fig. 13

509b

509f

520

Ident-No. 550844 9 March 2016

Reassembly

Fig. 17

Remove the cylindrical spring loaded pin 429a with a suitable puncher. Unscrewthe tuning piston 429 counter-clock-wise from the cover 4420.

4240

429

429a

Fig. 18

Change o-ring 437 on the tuning piston 429 and mount it in 4240 in reverse order.

4240

437

429

Fig. 19

Note position.

Lubricate the idler rotors carefully and slide them into the bores oft he pump body. NOTE: The position oft he idler rotors should be exactly as shown above as it otherwise will be difficult to mount the power rotor..

202

10 Ident-No. 550844 March 2016

Fig. 22

Mount the washers 130 and 132 together with the circlip 131.

Fig. 23

Complete mechanical shaft seal.

Fig. 20

Mount the front cover 501 and ist o-ring 506 on the pump body 401 with the 4 screws.

Lubricate the o-ring 506.

401

506

501

451 & 451a

Fig. 21

Mount the ball bearing 122 on the power rotor 1020 with the mounting tool by tightening the nut. NOTE: The measurement oft this tool varies depending on the pump size, a measurement table can be found in the tool description on page 5..

Mounting tool

Nut

122

1020

Ident-No. 550844 11 March 2016

Fig. 24

Slide on the rotating parts oft he mechanical shaft seal on the power rotor as shown above, grease the surface thoroughly on the power rotor as this prevents damage tot he seals rubber details when mounting it.

Grease this surface.

Lubricate the seal face on the rotating ring 509a with grease. We recommend grease of “Graphite” or “Molybdensulphite” type. NOTE: It is very important that the mechanical seal are handled with care and cleanliness ist tob e considered as crucial..

509a, c, d, e

1020

Fig. 25

Mount the stationary shaft seal part 509b with ist o-ring 509f into the end cover 520 by means of a suitable Teflon tool. The seal must be mounted so that the slot at the bottom of 509b corresponds with the guiding pin 520b. NOTE: The o-ring 509f must thoroughly greased as it otherwise easily could be damaged during the mounting.

520b

520

509b

509f Grease o-ring

520

520a

1020

Fig. 26

Vorsichtiges montieren des Lagerdeckel 520 an der Antriebsspindel 1020. Montieren der Wellenkupplung mit geeignetem Werkzeug. ZUR BEACHTUNG: Montage der Kupplungshälfte ohne Hammer um eine Beschädigung der Gleit-ringdichtung zu vermeiden.

Vent connection plug

Check that the pump shaft moves freely..

Tight the scres 521 crosswise to help the rotor to reach ist final position.

Lubricate and fit the power rotor 1020 into the pump by carefully guide it into the idler rotors „openings“ see fig. 19 on page 9. Make sure that the vent connection plug always is pointing upwards and reconnect the venting pipe.

Fit the electric motor back tot he pump. Checkk the correct setting oft he shaft coupling according to “Alignment and shaft couplings” and proceed according to instruction under “Startup” in this manual.

Fig. 27

12 Ident-No. 550 844 March 2016

Subject to technical alterations.

ALLWEILER AG Postfach 1140 ���� 78301 Radolfzell Allweilerstr. 1 ���� 78315 Radolfzell Germany Tel. +49 (0)7732 86-0 Fax + 49 (0)7732 86-436 E-mail: service@allweiler.de Internet: http://www.allweiler.com