2
WATER FLOW RATE
TOO SMALL
2.1
Insufficient hydraulic flow or
pressure.
2.2
Nozzle of your pressure tool
undersized.
2.3
Pressure loss in delivery hose.
2.1
Adjust the hydraulic flow to the demanded
level at required pressure.
2.2
Verify the nozzle sizing and replace with
proper one.
2.3
Verify the hose sizing and replace with proper
one.
3.
WATER PRESSURE
TOO LOW
3.1
Insufficient hydraulic pressure
or flow.
3.2
Nozzle of pressure tool
oversized.
3.3
Wear-out of nozzle.
3.4
Insufficient water supply.
3.5
Water pressure unloader valve
set too low.
3.1
Adjust the hydraulic pressure to the
demanded level at required hydraulic oil flow.
Pressure loss should be minimized - do not use
hoses of too small diameter or/and of an
excessive length.
3.2
Verify the nozzle sizing and replace with a
proper one.
3.3
Replace the nozzle.
3.4
Check and fix the problem. Use pressurised
water supply if available.
3.5
Check and re-adjust to specification.
4.
INTENCE PULSATING
OF WATER
PRESSURE
4.1
Some of water intake and
pressure valves are open or
damaged.
4.2
Water intake line breathes
causing pump cavitation.
4.3
Water intake line’s diameter
to small, resulting in pump
cavitation.
4.4
Excessive hydraulic flow,
when HPW-pump runs too
fast.
4.1
Check water valves, clean thoroughly or
repair.
4.2
Check water intake line and fix the problem.
4.3
Verify the hose sizing and replace with proper
one.
4.4
Adjust the hydraulic flow to the demanded
level.
HPW TROUBLESHOOTING
MAY CHANGE WITHOUT PRIOR NOTICE
High pressure pump HPW 200/30-45-ST
21/26
May 2012