Aussie Pumps MINE BOSS SCUD 351 Gebruiksaanwijzing - Pagina 10
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Aussie Pumps
PREVENTATIVE MAINTENANCE
Keep filter in supply hose connection clean,
rinse regularly.
Use correct size nozzles for machine and
replace when worn, check serial tag for correct
size.
Drain water from pressure hoses, gun/lance
assembly and accessories after use.
Protect pump from freezing. Failure to remove
water from the pump in freezing temperatures
will result in damaged pump manifold.
TROUBLE SHOOTING GUIDE (for engine troubleshooting refer to engine manual)
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
Unloader 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
Pressure in supply line when
running on by-pass
Engine will not start
WORK SMART ... STAY SAFE
10
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
Pistons cracked as a result of dry running
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
Safety valve activated due to pressure spike
Thermal dump activated
Piston packing worn
O.R plunger retainer worn
Travel plug in use on pump
Oil seal worn
Leaking gun &/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 valves
Valve set too high above operating pressure
Dirty valve
Dirty or worn low pressure valves
Out of fuel
Oil alert
Engine defect
| Aussie Scud, Ultra A & Predator A ... Operator's Instruction Manual
Use ONLY injector of the size and type designed
for this model.
DO NOT tamper with unloader valve adjustment
or alter engine speed.
DO NOT siphon chemicals through the pump, it
is designed for water only.
Incoming water supply must not exceed 60°C,
otherwise pumps seal damage could result
Follow engine manufactures guidelines for
engine maintenance. (see engine manual)
REMEDY
Check water supply & possibility of air ingress.
Check & clean or replace if necessary
Check & replace
Check & replace
Check & replace
Check & replace
Check & replace
Check water supply & air ingress at joints in suction line
Check & replace
Check & replace
Check & replace
Check & clean
Check & replace
Check & replace
Replace pistons
Check water supply & connections on suction line
Check & replace
Check & clean
Check & replace
Reduce temperature
Check & replace
Check & change oil twice as often
Check & replace
Reset safety valve (see page 11), if it keeps activating replace
unloader
Activates if water temperature exceeds 60°C. Should self reset
once water in pump cools. If not, replace
Check & replace
Check & replace
Replace with breather plug
Check & replace if necessary
Renew gun, seal pressure pipe
Renew sleeve
Check & renew as necessary kick-back valve plate & seat
Renew seals
Renew piston rod seals & examine surfaces in guide case
Install larger nozzle
Examine & renew as necessary
Adjust the unloader at the operating pressure.
Clean valve (removing lime deposits etc).
Grease parts before installing.
Remove & clean or replace low pressure valves
Fill tank with petrol/diesel
Check engine oil level, ensure machine is on a level surface
Return to engine service agent
Mar 2021