water pump on the lunar champ a630 - Motorhome Forums, Motorhome Discussion, Motorhome Chat

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post #1 of 3 (permalink) Old 09-10-2014, 11:30 Thread Starter
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water pump on the lunar champ a630

Hi guys ive had my m/h for 3 months now and the ive only encountered 1 problem the water pressure is the pump in the cold water tank
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post #2 of 3 (permalink) Old 09-10-2014, 12:14
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Pump

Pressure was a bit low on our H621 which does have the pump inside the water tank. I fitted an additional Whale in-line pump to supplement it and it makes a big difference.
A word of warning though, don't let the inline pump run dry for example when you initially filling the system

Best wishes

Mike & Ann
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post #3 of 3 (permalink) Old 09-10-2014, 12:35
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Welcome to MHF as a visitor.

There are 2 types of pump. One is a submersible pump which would be suspended in the fresh water tank. The other is a diaphragm pump which would be located elsewhere, possibly in the heater compartment.

Assuming the pump is not faulty, the main reasons for low pressure are:
a) air in the system
b) a water leak in the system

Suggest you start with opening all the taps (one at a time), with the pump switched on, and see if any air comes out.
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