9. Warranty Information
Limited Warranty Supplied by Dual Pumps Ltd
Dual Pumps Ltd as suppliers warrants to the original purchaser, each new unit or other
product supplied from its factory, for the period of twelve (12) months from the date of
shipment from the factory, six (6) months for equipment on hire or rental), to be free from
defects in material and workmanship under normal use and service. “Normal Use and
Service” means not to exceed recommendations on maximum speeds, pressures and
temperatures or handling fluids not compatible materials, as noted in the applicable Dual
Pumps catalogue, technical literature and instructions. This warranty shall not apply to
any pump or other product, which has been repaired or altered, to adversely affect the
performance or reliability of the pump or product. Lance or hoses are not covered by this
warranty due to the adverse conditions of their use.
Neither this warranty nor any implied warranty apply to damage caused by any of the
following:
• Freight damage
• Frost or freezing damage.
Washer & Pump Troubleshooting
Refer to manufacturer’s manual for full pump troubleshooting information.
Problem
Possible Cause
Remedy
Failure to
produce
pressure;
Failure to
produce
flow;
Fluctuating
pressure;
Chattering/
noisy;
Loss of
pressure;
Vibration in
lance/high
pressure
hose
No nozzle fitted in lance
assembly outlet
Fit desired nozzle
Pressure regulator valve
backed off
Wind adjuster knob in to pre-set
maximum
Blocked / worn nozzle
Clean / replace nozzle
Leaks in delivery line
Tighten connections / replace damaged
accessories
Blockage in delivery line
Check / clear delivery outlet & hose
Pump sucking air
Tighten inlet hose / filter connections
Check suction hose & filter fully
submerged
Inadequate water supply
Increase water supply
Pump not primed
Slow engine speed to aid priming
Obstructed water supply
Clean suction/inlet filters
Check suction hose not kinked
Water supply is too hot
Provide cooler water supply
Do not leave unit running in bypass for
long periods
Worn or faulty pump
Seek professional advice
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