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5833 275 - 04
Vitotrans 300 Installation, Operating and Service
System Pump
(continued)
Service
1. With the pump head cover off, check all pump wiring
connections.
2. Correct faulty wiring.
3. Replace pump head cover.
Check pump wiring
Wiring to Control
All wiring is routed back to the main control, refer to
the wiring diagram on pages 71 and 72 for internal
connections.
1. With the pump head cover off, disconnect the wiring.
2. Support pump head and release the pump head collar.
3. Remove pump head by pulling the pump head straight
out from the pump body.
4. Replace the pump head, tighten collar and reconnect
the
wiring.
Pump head removal
It is essential to use appropriate lifting devices
certified for lifting to a minimum of the pump
weight.
WARNING
DISCONNECT POWER BEFORE SERVICING THE VITOTRANS.
