Aussie Pumps RAPTOR EXTREME 21 Safe Operator-Bedienungsanleitung - Seite 10

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Aussie Pumps

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

AUSSIE SAFE BLASTING

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

Engine defect

| Aussie Raptor (Class B) ... Operator's Instruction Manual

REMEDY

Check water supply & possibility of air ingress.

Check & clean or replace if necessary

Check & replace

Check water supply & air ingress at joints in suction line

Check & replace

Check & clean

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

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

Return to engine service agent

August 2019