AEG Electrolux EHG 679 B Instruções de Operação descarregar pdf (Página 20)

GA 01.202/9.02 - 03/96

Maintenance

If you do not have a shaft seal driver, place the shaft seal

on the centering disk and carefully force it in with light

blows of the plastic hammer.

The shaft seal must not be bent.

Carefully push the O-ring (12/7) and the bushing (12/6)

onto the shaft.

Push the centering disk (12/1) with the shaft seal onto

the shaft and up against the end plate; fasten it with the

hex. socket screws (12/10).

Insert the key (12/5).

Mount the pump-half of the coupling (12/4) on the shaft.

Install the spring washer (12/3) and tighten the screw

(12/2).

Insert the coupling element (12/1) into the coupling and

mount the motor (see Section 3.5).

3.7 Removing and Remoun-

ting the Pump Module

Required tools:

Allen keys 3 mm, 5 mm, 8 mm, box wrench 10 mm, pos-

sibly pliers.

3.7.1 Removing the Pump Module

Drain the oil and remove the oil case (see Section 3.4).

Unscrew the hex. nuts (13/1).

Pull the entire pump module (13/2) forward off the tie

rods (13/6).

When doing so, ensure that the individual

pin-fitted parts are not loosened. Further

disassembly of the pump module should

only be carried out by a trained service

engineer.

Remove the gasket (13/4).

Take the coupling element (13/5) off the coupling.

After removing the protective shipping

materials, handle the new pump module

with care.

Before installing a new pump module, remove the four

tie rods from the new module and insert them in the old

one for protection during shipment.

3.7.2 Remounting the Pump Module

When installing a new pump module, it is also advisable

to use a new gasket (13/4).

Check the coupling element (13/5) for damage; if neces-

sary, install a new one.

Use the tie rods supplied with the new pump module only

if the old ones are damaged. To do so, unscrew the old

tie rods with lock nuts, and screw in the new ones. With

the aid of the lock nuts, tighten the tie rods. Then remo-

ve the lock nuts.

Before mounting the pump module, make sure that sea-

ling disc (13/3) fits correctly in its bore.

Push the gasket (13/4) onto the tie rods (13/6), push the

coupling element (13/5) onto one coupling half.

Push the entire pump module (new or repaired) onto the

tie rods.

Screw on the hex. nuts (13/1) and carefully

cross-tighten them (torque 7.5 Nm).

Mount the oil case together with the gasket (see Section

3.4).

Fill in oil.

3.8 Service at Leybold’s

If a pump is returned to Leybold, indicate whether the

pump free of substances damaging to health or whether

it is contaminated.

If it is contaminated also indicate the nature of the

hazard. For this you must use a form which has been

prepared by us which we will provide upon request.

A copy of this form is reproduced at the end of these

Operating Instructions: „Declaration of Contamination of

Vacuum Instruments and Components“.

Please attach this form to the pump or enclose it with the

pump.

This „Declaration of Contamination“ is required to meet

German Law and to protect our personnel.

Leybold must return any pumps without a „Declaration of

Contamination“ to the sender’s address.

The pump must be packed in such a way,

that it will not be damaged during shipping

and so that any contaminants are not relea-

sed from the package.

Attention

Caution

Attention

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