Interpump BOXJET TURBO 11.50, Operating Instructions Manual

Page: 21 / 138

19
12 - TROUBLE SHOOTING
(FOR QUALIFIED PERSONNEL)
TROUBLE
CAUSE REMEDY
The pump is running but
maximum pressure is
not obtained Air sucked into pump
Worn or dirty valves
Unloader packings worn
Nozzle worn or incorrect
Piston packings worn
Dirty filter
Check suction hose and fittings
Clean or replace
Check and/or replace
Check and/or replace
Check and/or replace
Check and/or clean
Fluctuating pressure Damaged, dirty or clogged valves
Air is being sucked
Worn packings
Dirty filter
Check, clean and/or replace
Check suction hose and fittings
Check and/or replace
Check and/or clean
Pressure decreases
Worn nozzle
Dirty or stuck valves
Bypass packings worn
Piston packing worn
Dirty filter
Substitute nozzle
Check, clean and/or replace
Check and/or replace
Check and/or replace
Check and/or clean
Excessive noise Air suction
Damaged, dirty or stuck valves
Worn bearings
Water temperature too high
Dirty filter
Check suction hose and fittings
Check, clean and/or replace
Check and/or replace
Lower water temperature to
under 60°C
Check and/or clean
Presence of water in oil Piston packings and oil seals worn
High air humidity Check and/or replace
Change oil twice as frequently
as that advised
Water dripping from under pump Piston packings worn
Packing o-rings worn Check packings
Replace O.R.
Oil leakage Oil seals worn Replace oil seal
The motor does not start when
switched on The plug is not well connected
No power supply Check plug, cord and switch
The motor stops The thermal protector has tripped
due to overheating Check that the mains voltage
corresponds to the specifica-
tions:
TURBO 8/70 - 8/90 - 11/50:
switch off the motor and let it
cool a few minutes
TURBO 15 - 19 - 21: wait a few
minutes before turning on the
unit again
The motor hums but does not run
when turned on System voltage is lower to the
minimum advised
The pump is stuck or frozen
Extension cord incorrect Check that your power source
is adequate
See page 16
Check the extension cord
table on page 11