11
6.1. Precautionary Measures During
Maintenance Work
Whenever working on the pump ensure the
pump motor is disconnected from the mains
supply.
If necessary, remove pump from the system for
inspection. Before dismantling allow the pump to
cool down.
➡
Only dismantle the pump as far is necessary to effect
repairs.
➡
Use only alcohol or similar cleaning agents for cleaning.
Do not use solvents.
The service intervals depend on the respective
field of application of the pump.
Load lock operation can reduce service
intervals.
CAUTION
CAUTION
All pump bearings are sealed and are filled with long-life
hydrocarbon-free-lubricant. The piston seals and the radial
shaft seal are wear parts.
Maintenance work necessarily:
1. If the rated final pressure is no longer achieved, also after
flushing the pump with nitrogen.
2. High noise emission in conjunction with pressure jumps
arise.
The service intervals depend on the respective
field of application of the pump.
Load lock operation can reduce service
intervals.
Requested tools
– Set of Allen key, size: 1,5 ... 8 mm)
– Cross slot screw driver
– Torque wrench 6 Nm with insert bit, size: 5 mm
– Torque wrench 25 Nm with insert bit, size: 6/8 mm
– Torque wrench 25 Nm with wrench-size 17 mm
Toolkit XtraDry (PO 006 001 -T)
CAUTION
6. Maintenance
➡
Screw on blocking tool B (PO 003 526) to block the crank
web 20 using the screws of the housing cover 8.
6.2. Replacing the piston seals
➡
Unscrew screws 101 and take off the housing cover 8.
➡
Unscrew screws 71 and take off both housing covers 6/7;
be careful of O-rings 100.
➡
Take off the valve plates 10/11 and the spiral-type
expanders 48.
➡
Clean piston heads with alcohol.
➡
Remove the connectors from the pressure transducer 17
and the gas ballast valve 18.
➡
Take off both cylinders 2/3; note the compensating plates
122 ... 130.
The compensating plates are required for accu-
rate setting of the TDC timing and must be refit-
ted in the same places during assembly of the
cylinders.
☞
PLEASE NOTE
In order to avoid damage to the pump, do not
exchange pistons, connecting rod and compen-
sating plates after dismantling; if necessary
mark the parts.
☞
PLEASE NOTE
Install the blocking tool B
20
B
