CAUTION: MOTOR FAN LEAD CONNECTED
Risk of pump damage. Take care when separating the fan cowl/fixed scroll assembly
from the housing assembly. The motor fan lead must be disconnected from the
controller before the fan cowl/fixed scroll assembly can be fully removed. Refer to
Figure: Motor fan lead connector.
3. Replace the tip seals
3.1 Tip seals
Figure 1 Replacing the tip seals
1. Orbiting scroll 2. Tip seal
3. Fixed scroll O-ring 4. Fixed scroll
5. Fan cowl 6. Fixed scroll fixing screws (4x)
7. Alignment dowel 8. Housing assembly
3.2 Remove the fan cowl
Prepare the pump by running the gas ballast control ON for one hour to remove any
process gases. Replace the tip seal as described below.
1. Switch OFF the pump and isolate from the electrical supply.
2. Undo the two screws that secure the fan cowl and remove the fan cowl. Refer to
Figure: Fan cowl removal.
3. Undo the four screws that secure fixed scroll assembly to the housing assembly.
Refer to Figure: Replacing the tip seals.
4. Carefully separate the fixed scroll assembly from the housing assembly using a
suitable lever in the slots provided Refer to Figure: Pump side views.
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