10. Trouble Shooting - UDOR ZETA 70 Bedien- Und Wartungshandbuch

If the Pump is to be scrapped:
1. Separate the various parts depending on their type (i.e. plastic, harmful fluids, metal
etc.).
2. Use public or private waste disposal systems envisaged by local law to dispose of
waste.
3. This device could contain harmful substances: improper use or incorrect disposal
could have negative effects on human health and on the environment.

10. TROUBLE SHOOTING

PROBLEMS
No pressure.
Very little pressure.
Pressure drops below
working range when
relief valve is open to
boom or gun.
Excessive gauge
vibration.
Excessive pulsation.
Pump does not suck
water.
Pump oil has milky
color.
The Pump oil comes
out of discharge line;
the oil level drops
markedly.
Oil plug pops out.
(§)These operations must be carried out by qualified personnel.
PROBABLE CAUSES
Insufficient strainer capacity, or dirty
or plugged strainer.
Suction hose restriction.
Collapsed suction hose inside or
outside tank restricting flow.
Air leak in inlet line.
Pressure relief valve stuck or worn.
Excessive tank foam due to low tank
volume.
Nozzle volume is greater than Pump
capacity.
One or more check valves seating
improperly.
Pulsation dampener pressure too low
or too high.
Air leak in inlet line.
Insufficient strainer capacity, or dirty
or plugged strainer.
Air not entirely evacuated from Pump
cavity.
Air leak in inlet line.
Insufficient strainer capacity, or dirty
or plugged strainer.
One or more check valves seating
improperly.
One or more diaphragms failures.
STOP THE PUMP IMMEDIATELY!
10.
Use larger capacity strainer or clean
strainer.
Eliminate restriction.
Replace collapsed hose.
Examine hoses and fittings, ensure
air tight fit and no leaks.
Repair or replace relief valve (§).
Refill tank.
a. Check relief valve adjustment.
b. Reduce nozzle orifice size or
number of nozzles used.
Clean or replace check valves(§).
Adjust pulsation dampener pressure.
(see page 21) – (§).
Examine hoses and fittings, ensure
air tight fit and no leaks.
Use larger capacity strainer or clean
strainer.
Run Pump with an open discharge to
totally evacuate air.
Examine hoses and fittings, ensure
air tight fit and no leaks.
Use larger capacity strainer or clean
strainer.
Clean or replace check valves(§).
Replace the diaphragms (§).
Diaphragms replacement instructions:
see pages 22-23.
24
SOLUTIONS