16
During maintenance, do not throw residues outdoors but observe current standards.
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.
10. TROUBLE SHOOTING
PROBLEMS PROBABLE
CAUSES
SOLUTIONS
No pressure.
Very little pressure.
Pressure drops below
working range when
relief valve is open to
boom or gun.
Insufficient strainer capacity, or dirty or
plugged strainer.
Use larger capacity strainer or clean
strainer.
Suction hose restriction.
Eliminate restriction.
Collapsed suction hose inside or
outside tank restricting flow.
Replace collapsed hose.
Air leak in inlet line.
Examine hoses and fittings, ensure air
tight fit and no leaks.
Pressure relief valve stuck or worn.
Repair or replace relief valve (§).
Excessive tank foam due to low tank
volume.
Refill tank.
Nozzle volume is greater than Pump
capacity.
a. Check relief valve adjustment.
b. Reduce nozzle orifice size or
number of nozzles used.
One or more check valves seating
improperly.
Clean or replace check valves(§).
Excessive gauge
vibration.
Excessive pulsation.
Pulsation dampener pressure too low
or too high.
Adjust pulsation dampener pressure.
(see page 13) – (§).
Air leak in inlet line.
Examine hoses and fittings, ensure air
tight fit and no leaks.
Insufficient strainer capacity, or dirty or
plugged strainer.
Use larger capacity strainer or clean
strainer.
Air not entirely evacuated from Pump
cavity.
Run Pump with an open discharge to
totally evacuate air.
Pump does not suck
water.
Air leak in inlet line.
Examine hoses and fittings, ensure air
tight fit and no leaks.
Insufficient strainer capacity, or dirty or
plugged strainer.
Use larger capacity strainer or clean
strainer.
One or more check valves seating
improperly.
Clean or replace check valves(§).
Pump oil has milky
color.
The Pump oil comes
out of discharge line;
the oil level drops
markedly.
Oil plug pops out.
One or more diaphragms failures.
STOP THE PUMP IMMEDIATELY!
Replace the diaphragms (§).
Diaphragms replacement instructions:
see pages 14-15.
(§)These operations must be carried out by qualified personnel.
