6
Maintenance
The only regular attention your new pressure system requires is
to check the pressure tank’s air charge every 6 months. This is
‘factory set’ at 130kPa (19 psi) and can be checked at the air
valve with a tyre gauge. Do not charge tank to a higher
pressure than 130kPa.
To check air pressure in tank:
1. Switch off pump.
2. Open outlet nearest to pump to release water pressure.
3. Remove air valve cap from top of Supercell tank and
charge tank to 130kPa (19 psi) using air pump and
check with tyre gauge.
4. Switch on.
5. Close outlet.
Trouble Shooting Check List
a) Motor Runs When Switched On But Does Not Pump.
1. Suction line and pump body not filled with water.
2. Air leaks in suction lines or suction pipe not under water.
3. Air trapped in suction lines (also possible with flooded suction due to uneven
rise in piping: eliminate humps and hollows).
4. No water at source or water level too low.
5. Valve on suction lines closed.
b) Pump Switches On and Off Frequently (Cycling)
1. Check that tank air charge is 130kPa (19 psi).
2. Rapid cycling may occasionally be caused by float valves filling tanks. This
can be overcome by fitting a larger Davey Supercell tank in place of the tank
supplied.
3. Leaking taps, float valves etc. Check plumbing.
4. Leaking check valve/foot valve.
c) Motor Doesn’t Start When Switched On
1. Power not connected.
2. Supply voltage too low.
3. “Over temperature” cut-out tripped.*
4. Motor not free to turn e.g. a jammed impeller.
5. Internal motor fault.
