Pfeiffer Vacuum HISCROLL 12, Руководство по эксплуатации

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5. Make sure that the O-ring and valve are seated correctly.
6. Screw the valve into the spiral housing using the face spanner.
– Tightening torque: 5 Nm
9.4 Replacing the gas ballast valve
Prerequisites
● Vacuum pump switched off
● Vacuum system vented to atmospheric pressure
● Electrical supply disconnected
● Mains cable disconnected
● Vacuum inlet sealed with the original protective cover
Required tools
● Slot screwdriver
● Allen key,
WAF 2.5
● Hexagon socket torque wrench,
WAF 2.5
9.4.1 Removing gas ballast valve
Required tools
● Slot screwdriver
● Allen key,
WAF 2.5
● O-ring picker
1
2
3
4
5
6
Fig. 21: Removing gas ballast valve
1 O-ring, 3x 4 Cover
2 Gas ballast valve 5 Sinter filter
3 Special screw 6 Spiral housing
Removing the gas ballast valve
1. Pry off the cover from the gas ballast valve using a screwdriver.
2. Unscrew the special screw from the base plate.
3. Remove the gas ballast valve part from the spiral housing.
4. Replace the O-rings between the gas ballast valve and the spiral housing.
Maintenance
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