Pfeiffer Vacuum Pascal Series Operating and maintenance instructions

MAINTENANCE INSTRUCTIONS

Translation of the original instructions

PASCAL SERIES

Rotary vane pumps 33 to 63 m

EN – 1

MaintenanceNomenclature EN

Rotary vane pumps

Dear customer,

This Maintenance instructions is

intended for customers of the

Pfeiffer Vacuum Company.

It describes the product

maintenance operations which

can be performed by the user

on the product concerned.

This documentation must

be used together with the

operating manual for the

product of the same name.

Maintenance

Safety instructions for maintenance ............................................................ 3

Tools and consumable products .................................................................. 4

Disassembling the pump............................................................................. 6

Cleaning components................................................................................. 10

Replacement of shaft seals ......................................................................... 11

Reassembling the pump.............................................................................. 13

Start-up after pump disassembly....................................................................15

Service....................................................................................................... 16

Nomenclature..................................................................................................

Spare parts lists............................................................................N - 1 à N - 13

EN – 2

Indicates a potentially hazardous situation which, if not avoided, could result

in moderate or minor injury. It may also be used to alert against unsafe

practices.

Indicates a potentially hazardous situation which, if not avoided, could result

in property damage.

Indicates an imminently hazardous situation that, if not avoided, will result

in death or severe injury (extreme situations).

Indicates a potentially hazardous situation which, if not avoided, could result

in death or severe injury.

Before switching on the product, study operating instructions and make sure

you follow the safety instructions it gives. You can recognise these by the

‘Caution’, ‘Warning’ and ‘Danger’ symbols.

Good practice tips and manufacturer’s recommendations are in a grey box.

MANUAL P/N: 105527M

EDITION: 01 - October 2015

EN – 3

ENMaintenance

General precautions

Safety instructions for maintenance

For normal operation, the maintenance of 2033-2063 m3/h series pumps only require

regular oil changes (see Operating instructions).

Insufficient tightness after servicing could result in chemical hazards. Always

perform a leak test after maintenance.

Certain gases can become corrosive and toxic when trapped in oil. Always

wear protective gloves when handling used and dirty pump oil, drain it

into a closable container, and do not breathe the oil fumes. Always use

fully self-contained breathing apparatus.

During pump removal, draining or maintenance operator could be in

contact with process residues which could cause severe injury or death.

Ask your safety department for instructions according to the local

regulations.

We recommend:

- To purge the pumping installation with dry nitrogen.

- To wear gloves, protective glasses, breathing mask or any appropriated

safety equipment.

- To ventilate the premises well.

- Do not eliminate maintenance waste via standard disposal channels. Have

it destroyed by a qualified company if necessary.

- To install the inlet and exhaust blanking plates, thus accessories are

delivered with the pump.

Decontamination – product dismantling

According to the regulations 2012/19/EU about Waste of electrical and

electronical equipments, and 2011/65/EU about Restriction of Hazardous

substances, the manufacturer provides a recycling paid service for the

end of-life of waste electrical and electronic equipment.

Any obligation of the manufacturer to take back such equipment shall

apply only to complete not amended or modified equipment, using Pfeiffer

Vacuum original spare parts, delivered by Pfeiffer Vacuum, containing i.e.

all its components and sub-assemblies.

This obligation will not cover the shipping cost to a Pfeiffer Vacuum taking

back facility.

Whenever you return the product to an repair service center, please

make sure you follow the Service procedure and fill in the declaration of

contamination found on our website.

Maintenance must be performed by a skilled maintenance operator trained

in the relevant health and safety aspects (EMC, electrical hazards, chemical

pollution, etc.).

Isolate the product from all energy sources (mains electricity, compressed air,

etc.) before starting work.

EN – 4

Tools and consumable products

Special precautions

Overhaul kit

Spare parts

This kit contains all the seals on the pump

which must be replaced at each complete

disassembly. It includes the flat gasket for

oil casing (on former pumps) but also the

o-ring for the new models.

Keep this kit in a dry place, away from

heat and light (sunlight and ultraviolet

light), in order to prevent any hardening

of the elastomers (see AFNOR standards:

“storage conditions for vulcanized

elastomer based products” - FD T.46 022).

Seal kit

For fasted service, specify the following when ordering:

- Pump type.

- Serial number (on pump label).

- Part number (see list at end of manual).

Maintenance kits containing the most frequently used parts are always available at our

sales outlets. Be sure to use these kits so you will have all the parts necessary.

Screw kit This kit contains all screws and washers for

the pump.

Pump models P/N

2033 SD 054285

2063 SD 054485

2033 C1 054286

2063 C1 054488

2033 C2 065123

2063 C2 065552

Pump models P/N

2033 SD 054288

2063 SD 054487

2033 C1 054289

2063 C1 054489

2033 C2 065124

2063 C2 065553

Pump models P/N

2033 / 2063 SD 105347

2033 / 2063 C1 - C2 105348

In addition to the seal kit, this kit

contains a set of spare parts to perform

maintenance operations on the pump for

a two year period, under normal operating

conditions.

Read the safety instructions at the beginning of the maintenance chapter.

Before disassembling the pump, drain it (see Operating instructions).

All the seals and faulty parts should be replaced: provide a seal kit or an

overhaul kit.

EN – 5

ENMaintenance

Recommended tools The tools required for disassembling and reassembling the motor pump

asssembly are listed below:

• N° 3 and N° 9 flat screwdrivers

• Thin spanner

- All models: 12 - 13 - 16 - 17 mm on face

- C1: 14 - 16 - 50 mm on face

- C2: 14 - 16 - 19 mm on face

• Allen wrenches: 2 - 4 - 5 - 6 - 8 mm

• 8mm extraction screws

• Filter cartridge key - automobile equipment supplier - (C1 serie)

Tools kit

This kit contains the usefull tools to disassemble and reassemble the shaft seals in the

different flanges and flanged stators.

Specific tools

DESCRIPTION P/N

For all pump models, kit including: 065192

Mounting mandrel 19.5 mm 065089

Protective sleeve 065088

Washer 073331

Coupling adjustment tool 065087

Extraction tool 065186

EN – 6

Disassembling the pump

Disassembling

the motor block

(see page N-2)

Unscrew 4 nuts (16) and washers (15).

Remove motor assembly (C) and motor mounting plate (22). The coupling separates

into two halves, one (2) (N-12) on the motor side, the other (1) (N-12) on the pump

side.

Follow the chronological order of disassembling instructions.

See the drawings and their part lists in pages N–1to N – 13

Disassembling of the fan Prevent fan (17) from rotating by wedging a wooden shim against the side of the frame

and two blades of the fan.

Remove elastomere coupling (1) (N-12).

Unscrew self-locking srew (19) (not reusable) and remove washer (18).

Using two M8 mm extraction screws, remove fan (17) and shim.

Remove screws (26) and washers (27).

Using two M8 mm extraction screws, remove cover (13) with double lip seal (12).

Removing pump from

system

The following steps are necessary to protect the pump as far as possible from the

effects of corrosion:

• Flush pump with a neutral gas (dry nitrogen) during half an hour to prevent toxic or

corrosive gases accumulating in the pump.

• C2 Model: Disconnect the nitrogen lines to the pump. If the sensors are connected,

disconnect them.

• Disconnect the pump from the system and seal off the inlet and exhaust ports. Bring

the pump to the maintenance area immediately.

• Drain pump (see Operating instructions).

The first phase of disassembly is to disassemble the motor, the second is to disassemble

the pumping module.

In case of important pollution, roughly clean the pump with hot solvents under

pressure.

C2 Model

Dismantling gas ballast

(see page N-10)

Remove three screws (22) then (23), (40) and remove gas ballast assembly (25) and

O-ring (26).

Unscrew plug (41) (1/8“ NPT).

Remove PTFE tape from plug thread (41) and put new one when reassembling.

Remove the fastening screw (19) (C1 model) from the gas ballast knob (20) and

unscrew it completely, then remove the spring (21) (SD model) and the O-ring (24).

Remove the 3 screws (22) then (23), then remove the gas ballast assembly (25) and the

O-ring (26).

Valve (27)/valve support (28)/washer (29)/circlip (30) are not easy to

disassemble. All parts are available in an equipped gas ballast sub-assembly

(see N-11).

Do not store a pump in this condition for any length of time: once the

neutral gas has dissipated, the inside of the oil case will be in contact with

the ambient air laden with water vapor; this may react with the pumped

gases to form acids that may corrode the pump even at room temperature.

C2 Model

SD/C1 Model

Study the general precautions listed on Maintenance chapter page 37.

EN – 7

ENMaintenance

Removing the oil case

(see page N-2)

Install the pump vertically on a work bench using a hoist.

Remove the nuts (4) then (5) and remove the oil casing (A) and its O-ring (3).

The presence of an oil casing flat gasket

may cause case (A) and frame (B) to

stick together due to aging. Insert lever

between base and bottom of case, and

pry off case. Do not use a hammer or

screwdriver, which could damage the

parts and sealing surfaces.

Disassembling the oil sight glass

(see page N–8)

C1 and C2 Models When the oil casing has been disassembled, leave the pump under a suction hood for

fifteen to thirty minutes before disassembling it to make sure all the pumped gases

have been evacuated.

Removing accessories

Unscrew (50) with a thin spanner, while securing the base (54). Change the O-ring (51)

prior to reassemble.

Unscrew the two nuts holding the tube fasteners and remove it.

Remove the tube (55).

Unscrew the base (54).

Remove the washer (52) and the O-ring (53) from the inside of the base. Change the

seal prior to reassemble.

Remove the PTFE tape from the base (54) and put a new one when reassembling.

Removing bubbler

(C2 Model) (see page N–10)

Removing oil pressure

monitoring system

(C2 Model)

Remove pressure gauge or monitoring device or plug.

Unscrew tube connector (10) (N-6) located on the oil pump (11) (N-6).

Unscrew (50) with a thin spanner, while securing the base (54). Change the O-ring (51)

prior to reassemble.

Remove the tube (56).

Remove the washer (52) and the O-ring (53) from the inside of the base (54). Change

the seal prior to reassemble.

Remove the PTFE tape from thread (54) and (10) (N-6), and put new one when

reassembling.

Removing the filter cartridge

(C1 model) (see page N–6)

Using the specific key (see page 45), remove the filter cartridge (33).

Unscrew and remove the 2 nuts (25) and the washers (24). Remove the flange (23), the

sight glass (21) and the seal (20). Change the seal prior to reassemble.

SD and C2 Models

C1 Model Unscrew the oil sight glass body (51) using a 50mm spanner and remove the O-ring

(50).

Remove the circlip (54) then the glass (53) and the O-ring (52).

Disassembling the pump (cont’d)

EN – 8

Remove 4 nuts (1) then (2).

Insert two screwdrivers into the two notches and twist to remove plate off pins (11).

Pull flange (4) straight out, holding HP rotor (9) in place.

Remove O-ring (5).

Disassembling the rear flange (4)

C1 model: Remove the 2 screws (32) and remove the case bushing (31).

Remove screws (21) then (18) and equipped body (11).

Remove screws (20) then (19) and cylinder (17), spring (16), piston (15) and diaphragm

(14).

Remove seat (13) and O-ring (12). Change the O-ring prior to reassemble.

Unscrew the oil inlet tube fixation (3) and (4) and remove the stop (5) (SD and C1

models). Remove the oil inlet tube (1).

Unscrew air inlet tube (7) and remove spring (6).

If necessary, note settting of air inlet tube (7): number of turns until tube stops moving

turning clokwise.

Remove vane (9).

Disassembling oil pump (11)

(see page N–6)

Removing HP rotor (9) and

HP stator (12)

Removing flange (21)

Removing LP rotor (26)

and LP stator (29)

Disassembling the

pumping module

(see page N-4)

Removing the exhaust valve

cover (16) and (32)

Remove the screws (18), (17) then (34), (33) and the cover(s) (16), (32).

Remove the exhaust valves (13), (30) and their springs (15) (31) and for 63C1 model,

the washer (14).

Insert two screwdrivers in the notches of the flange (21) and release the flange (21).

Remove the O-ring (24).

Remove tube (37) and O-ring (36).

Remove the HP rotor (9) by sliding it out of the HP stator (12).

Remove vanes (10) and their springs (39).

Insert two screwdrivers in the two notches of the HP stator (12) and twist to remove

plate off pins (19).

Remove HP stator (12) straight out.

Remove the O-ring (20).

SD Model Oil jet (23) lubricates the first stage. Do not remove it for cleaning.

When reassembling, spray with compresses air to remove any obstructions.

Remove the LP rotor (26) by sliding it out of the LP stator (29).

Remove vanes (27) and their springs (38).

Insert two screwdrivers in the two notches of the LP stator (29) and twist to remove

plate of pins (7) (N-2).

Remove LP stator (29) straight out.

Remove the O-ring (35).

Remove tube (38) and O-ring (37) (N-2).

23 22

Disassembling the pump (cont’d)

EN – 9

ENMaintenance

Disassembling inlet nipple (9)

(see page N-10)

Remove 4 screws (4), (7) then (3), (6) and remove clamps (2) and (5).

Remove nipple (9) and its O-ring (8).

Remove the metallic filter (31) and clean it.

Remove the pin (7) and the filter (9), the sleeve (8), the shaft (6), the valve (2) and the

circlip (5).

Disassembling exhaust nipple (3)

(see page N-8)

Remove the protection (1).

To remove the exhaust nipple (3), the nipple must be connected to a line with a NW40

centering ring with O-ring and quick connect clamp. Use the quick connect clamp to

unscrew the nipple (3).

Remove the O-ring (4).

SD Model

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