Anybody know how to DIY service the CM5-4PT diagphram pressure tank? Like how to pump air in and to what pressure?
Plan to DIY maintain my Grundfos pump.
[WTA] Grundfos Water Pump, CH-PT or CH-PC
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 Feb 22 2017, 12:42 PM
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888 posts Joined: Mar 2011  
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Feb 23 2017, 05:48 PM
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#2
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QUOTE(zheilwane @ Feb 23 2017, 12:46 PM) 1) Turn off incoming water and electricity. Thanks. Just need a bit more info, do you know the steps to fill up the tank? Can use like a mini air compressor or a bicycle tire pump?2) Turn on a tap to release pressure and make sure pressure gauge drop to 0 3) Pump in 22 psi into the pressure tank 4) open back the incoming water supply 5) Turn back on the electricity  |
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Feb 24 2017, 10:55 AM
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QUOTE(zheilwane @ Feb 23 2017, 11:12 PM) bicycle pump and you need a gauge to check the psi in the tank after pumping Great thanks for the info. I try to DIY tomorrow. |
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Feb 27 2017, 01:12 PM
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#4
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QUOTE(zheilwane @ Feb 23 2017, 11:12 PM) bicycle pump and you need a gauge to check the psi in the tank after pumping It worked I managed to charge the tank with a bicycle pump. I followed the instruction on the tank itself. Bleed the water inside the tank by turning off the water inlet to the pump. Then I check the pressure it was 20psi only. Following that, I charged it up to 0.9 X cut in pressure for CM5-4PT which was 26psi as per the Grundfos technical manual. Very simple and easy to do. |
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