Pool Filter... filter. "Incomplete" prime?
July 15, 2009 12:57 PM Subscribe
Replaced Jandy CJ200 cartridge filter with new Jandy SFTM22 sand filter. Pump pot no longer fills completely with water. Possible reasons? Contractor malfeasance?
posted by rocketpup to home & garden (3 answers total) 1 user marked this as a favorite
This weekend my Jandy CJ200 shot its top half many tens of feet into the air for unknown reasons. We had just cleaned the cartridge like many times before and had restarted it. The pressure release valve was definitely open.
Whatever the reason for this event, we simply decided to buy and have installed a new 22" sand filter, the Jandy SFTM22, which is apparently a renamed Hayward due to some recent corporate acquisitions.
Our pool service installed the new filter and left, but the pump never primed, and we couldn't get it to do so using the normal methods. Note that we have a Jandy JHPU1.0 1 HP pump.
So we got the pool service out again today and they managed to improve the situation somewhat, so that the water level is higher in the pot, and completely covering the inlet pipe. They say they did this by sealing some leaks, but that to fix it completely they need to replace the diffuser. We did backwash the filter, but it is brand new and the water was perfectly clear. There is no pressure release valve on this filter, not that I know if it needs one. It is currently operating at 23 PSI, and has been since it was installed. No idea if that is normal since it is brand new.
Note that the pot filled just fine when the CJ200 was in operation.
So I have a few questions:
1) Can the pump/filter just be operated this way as long as the water completely covers the inlet pipe?
2) Could this be considered a normal consequence of switching to a new filter? Maybe the new filter is easier to pass water through?
3) Could excess pressure in the system damage the diffuser without noticeably damaging anything else except for the old filter?
4) Could this have been caused by the contractor during installation?
Thanks for any help!