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10. TROUBLE SHOOTING
A. If Motor Runs but Pump Does Not Deliver
Water or Flow Rate is Reduced
One or more of the following may be the cause:-
1. Pump not primed:
Refer Instructions on Priming and Operation.
2. Leaks in piping or from seal:
Check suction piping and repair any leaks. A
leaking seal may also prevent pump operating.
3. Low water level:
Foot valve (entry) out of water or suction lift too
great because of reduced water level. Extend
piping and/or re-site pump closer to the water.
4. Total pump delivery head too great:
Calculate total pump head and check against
pump’s published performance. Reduce head,
use larger pipe or use higher head pump.
5. Piping or pump blocked:
Check both piping and pump internals
and unblock as required. Special attention
should be paid to inspecting the internals
of the impeller for blockages.
6. Defective valves:
Check that foot valve can open and valves
in piping will allow water to pass (are they
installed in the correct direction?) Repair
or replace any defective valves.
7. Incorrect direction of rotation - 3 phase models:
Check that impeller rotates in an anti-clockwise
direction when viewed from suction end.
To change direction of rotation
for 3 phase models, swap any
two power leads at motor - refer
“Power Connection Instructions”.
B. If Motor Fails to Run
One or more of the following may be the cause:-
1. Pump not connected:
Check power point with portable appliance
to ensure power is available. Check
fuses and main power supply switch.
2. Voltage too low:
Remove any long extension leads and try
pump again. Eliminate long leads or replace
with heavier, higher capacity leads.
3. Overload tripped:
Allow motor to cool and overload
will re-set. Determine the cause of
overload tripping and rectify.
4. Motor not free to turn:
Remove end cap/terminal cover, and
using a correctly sized (16mm) socket
spanner on end of shaft, check that motor
shaft is free to turn. If not free, remove
pump body and rectify cause of binding.
5. Internal motor fault:
Have unit checked by your local Davey Dealer.
11. SPARE PARTS
When ordering spare parts it is essential
to give both pump model and motor type
numbers from nameplate as well as the
full description on part required.
*NOTE: For protection, the Davey
pump motor is fitted with an
automatic reset thermal overload,
constant tripping of this overload
indicates a problem e.g. low voltage
at pump, excessive temperature
(above 50°C) in pump enclosure.
Warning: Automatic reset thermal
overloads will allow the pump
to restart without warning.
Always disconnect the pump
motor from the electrical supply
before maintenance or repairs.
WARNING: When servicing
or attending pump, always
ensure power is switched off
and lead unplugged. Electrical
connections should be serviced
only by qualified persons.
Care should also be taken when
servicing or disassembling pump
to avoid possible injury from hot
pressurised water. Unplug pump,
relieve pressure by opening a tap on
the discharge side of the pump and
allow any hot water in the pump to
cool before attempting to dismantle.
IMPORTANT: DO NOT USE
petroleum based fluids or solvents
(e.g. Oils, Kerosene, Turpentine,
Thinners, etc) on the plastic pump
components or seal components.
WARNING: Do not use hydrocarbon
based or hydrocarbon propelled
sprays around the electrical
components of this pump.
