Davey HP, HS & HM Pressure Systems with Presscontrol - Manual (Page 3)

10 3
Preparing Your System
On removing your pressure system from its carton you will need to position the
Presscontrol module on top of the pump. Once in position on top of the pump hand
tighten the locking nut. The Presscontrol unit is capable of 360° rotation to enable
the most convenient positioning of the control panel.
Rotary Coupling Installation
Your Davey Water Pressure system is equipped with the convenience of the Davey
Rotary Coupling. This coupling allows the pump controller to be fitted simply and
easily to the pump discharge.
The rotary coupling is already fitted to the pump discharge port. The controller
adaptor nut is able to rotate independent of the pump adaptor nipple and thus the
complete pump, this allows it to be tightened onto the pump controller inlet. – see
illustration below. Hand tighten only the controller adaptor nut to ensure a firm
connection to your controller. The oring on the base of the controller will ensure a
leak-proof seal between the rotary coupling and the controller.
The ability to rotate the adaptor nut also means that the complete controller, once
fitted to the rotary coupling, can be rotated a full 360 degrees in the horizontal plane,
without causing the coupling to unscrew from the pump outlet.
Large lead-in on thread to ensure positive fitment and
overcome possible cross threading.
Controller adaptor nut rotates independent of the pump
adaptor nipple, and has hand tightening ribs.
Pump adaptor nipple can be fitted to the pump discharge
and tightened independently of the controller nut.
Large section Oring provides positive seal on pump
discharge.
Circlip retains controller nut and pump nipple as one
assembly.
Only connect the discharge pipework to the discharge port.
Trouble Shooting Check List
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 eg. a jammed impeller.
5. Internal motor fault.
MOTOR DOES NOT START WHEN TAP IS OPENED
1. Automatic switch has detected loss of prime.
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.
MOTOR RUNS WHEN SWITCHED ON BUT DOES NOT PUMP, PUMPS POORLY
OR FAULT LIGHT ON Presscontrol IS LIT (PUMP STOPS)
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.
6. Check valve installed in wrong direction.
7. Suction lift too high.
8. Leaking air bleed screw.
9. Blocked impeller.
PUMP STOPS, BUT RESTARTS QUICKLY - NO FLOW DEMAND
(AUTO MODELS ONLY)
1. Leaking suction line, checkvalve or footvalve.
2. Suction pipe too long and/or too flexible.
PUMP DOESN’T SUPPLY ADEQUATE PRESSURE
1. Suction lift is too high.
2. Pump impellers partially blocked.
3. Partially blocked suction line.
4. Wrong pump selected.