AUSSIE ECO-CLEAN Hurricane Manuel d'entretien - Page 6

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Australian Pump Industries
TROUBLE SHOOTING GUIDE
FAULT
Pump running normally
but pressure low on
installation
Fluctuating Pressure
Pressure low after period
of normal use
Pump Noisy
Presence of water in oil
Water dripping below
pump
Oil Dripping
Valves switches
repeatedly when gun is off
Leaky piston rod
Leaky by-pass at nominal
pressure
Pressure gauge shows
high pressure fluctuations
when shutting off gun
Motor hums when
switched on but does not
start
6
Aussie Monsoon & Hurricane ... Operation & Maintenance Manual
CAUSE
Pump sucking air
Valves sticking
Unloader valve seat faulty
Nozzle incorrectly sized
Worn piston packing
Valves worn
Valves blocked
Pump sucking air
Worn piston packing
Nozzle worn
Check valves worn
Check valves blocked
Unloader valve seat worn
Worn piston packing
Air in suction
Broken or weak suction or delivery
valve spring
Foreign matter in valves
Worn bearing
Excessive temperature of liquid
Oil seal worn
High humidity in air
Piston packing worn
Piston packing worn
O.R plunger retainer worn
Oil seal worn
Leaking gun and/or pressure pipe.
Leaky sleeve
Worn out kick-back valve body
Leaky seals
Defective O-Ring/Support Ring
Nozzle too small, too much water.
Worn out by-pass valve
Valve set too high above operating
pressure
Dirty valve
Main voltage too low
Spray gun not activated
Cross section of extension lead too
small
REMEDY
Check water supply and possibility of air
ingress.
Check and clean or replace if necessary
Check and replace
Check and replace
Check and replace
Check and replace
Check and replace
Check water supply and air ingress at
joints in suction line
Check and replace
Check and replace
Check and replace
Check and clean
Check and replace
Check and replace
Check water supply and connections on
suction line
Check and replace
Check and clean
Check and replace
Reduce temperature
Check and replace
Check and change oil twice as often
Check and replace
Check and replace
Check and replace
Check and replace if necessary
Renew gun, seal pressure pipe
Renew sleeve
Check and renew as necessary kick-
back valve plate and seat
Renew seals
Renew piston rod seals and examine
surfaces in guide case
Install larger nozzle
Examine and renew as necessary,
poppet (16 for APR-11 for VD valves -
10 for ADV-8 for Unifit valves), valve set
(14 or APR-12 for VD valves - 11for
AVD valves - 7 for Unifit) and by-pass
valve body.
Adjust the unloader at the operating
pressure.
Clean valve (removing lime deposits
etc). Grease parts before installing.
Check electrical connection
Activate spray gun when switching on
Use correct dimension extension lead