33
0424-M001-1
PROBLEMS
CAUSES
REMEDIES
The jack does not slide
smoothly and load is
unstable.
a)
Sliding rollers do no rest properly
(a roller does not rest on the
platfoarm).
a)
Check rest points and adjust pullout
retaining screws (see procedure in par.
INSTALLATION).
The pumps works but
does not send oil.
a)
Low oil level.
a)
Top up oil level.
The crosspiece works
unloaded but not when
loaded.
a)
b)
c)
Load limit exceed on the crosspiece.
Piston gaskets damaged.
Insufficient seal on the maximum valve.
a)
b)
c)
Check.
Replace gaskets.
Contact authorized technical services.
The pump reaches
maximum pressure but
does not remain under
pressure.
a)
b)
c)
Check hydraulic couplings.
Check the delivery valve ball
bearing.
Oil leak from connected
equipment.
a)
b)
c)
Tighten if necessary.
Clean or replace.
Repair and check sealings.
9.
TROUBLESHOOTING TABLE
This table facilitates identification of the cause of the defect. Users are encouraged to contact technical service without delay to
obtain instructions on how to repair and/or adjust the equipment safely.
RAVAGLIOLI S.p.A.
shall not be liable for injury to people or animals or damage to property in the event the equipment is serviced,
repaired, maintained or operated by unauthorised persons and/or unqualified personnel.
9.1 Model KP118 - KP118N - KP118Y
9.2 Model KP118P - KP118NP - KP118PY
33
0424-M001-1
PROBLEMS
CAUSES
REMEDIES
The pump does not start
or stops during the
operation (before
reaching the maximum
pressure).
a)
b)
Return spring broken.
Air loss, check the piston seal.
a)
b)
Replace.
Replace if faulty.
The pump works but does
not send oil.
a)
b)
Oil level low.
Pump does not prime.
a)
b)
Top up oil
Operate the pedal in the "RELEASE
area at the same time as the air valve to
start the motor.
- Bleed the air out
- Pressurize the tank
CAUTION
Max. pressure 0.5 Bar (7 P.S.I.)
- Remove and clean.
Low capacity.
a)
b)
c)
Tank not ventilated.
Insufficient air capacity.
Hydraulic causes:
- Check that the oil filter is not blocked
- Air in the hydraulic circuit
- Check that the ball of the suction valve
works properly
a)
b)
c)
Ventilate tank through the screw on
the plug.
Capacity should be 250 Lt/minute.
- Clean or replace
- Bleed air from the circuit
- If necessary add a copper washer or
replace coupling if the housing is worn.
The pump does not
reach the maximum
pressure.
a)
b)
Check the air pressure.
Valve or gaskets faulty or dirty.
a)
b)
7 bar (100 P.S.I.) is required.
Clean or replace.
The pump reaches the
maximum pressure but
does remain under
pressure.
a)
b)
c)
d)
Check hydraulic connections.
Dirt under the pedal.
The ball of the delivery valve.
Leakage on the apparatus connected.
a)
b)
c)
d)
Tighten if necessary.
Clean.
Replace gaskets.
Repair and check seal.
Excessive oil leaks from
the air drainage.
a)
Gaskets faulty.
a)
Replace.
Oil tank gets up to
pressure with air and oil
leaks from the valve.
a)
b)
Air leakage from the gaskets.
Tank too full of oil.
a)
b)
Replace gaskets.
Check the level.
Pump continues to
pump even after the
pedal has been
released.
a)
b)
Gaskets faulty.
Air valve spring broken or too weak.
a)
b)
Replace.
Replace.
After a period of disuse,
the pump does not start.
a)
Gaskets
faulty.
a)
Replace.
