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10. TROUBLESHOOTING TABLE
This table facilitates identification of the cause of the defect. The manufacturer recommends that the technical service department
is contacted in good time, to obtain instructions for operating and/or adjusting in condition of maximum safety.
RAVAGLIOLI S.p.A. will not accept any responsibility for damage to people, animals and objects caused by manoeuvres by
unauthorised and unqualified personnel.
PROBLEMS
The pump does not start
or stops during the
operation (before
reaching the maximum
pressure).
The pump works but does
not send oil
Low capacity
The pump does not reach
the maximum pressure.
The pump reaches the
maximum pressure but
does remain under
pressure.
Excessive oil leaks from
the air drainage.
Oil tank gets up to
pressure with air and oil
leaks from the valve.
Pump continues to pump
even after the pedal has
been released.
After a period of disuse,
the pump does not start.
28
CAUSES
Return spring broken
a)
b)
Air loss, check the piston seal
Oil level low
a)
b)
Pump does not prime
a)
Tank not ventilated
b)
Insufficient air capacity
c)
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)
Check the air pressure
Valve or gaskets faulty or dirty
b)
Check hydraulic connections
a)
b)
Dirt under the pedal
The ball of the delivery valve
c)
Leakage on the apparatus connected
d)
a) Gaskets faulty
a)
Air leakage from the gaskets
Tank too full of oil
b
a)
Gaskets faulty
b)
Air valve spring broken or too weak
a) Gaskets faulty
0434-M003-0
REMEDIES
Replace
a)
b)
Replace if faulty
Top up oil
a)
b)
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
a)
Ventilate tank through the screw on the
plug
b)
Capacity should be 250 Lt/minute
c)
- Clean or replace
- Bleed air from the circuit
- If necessary add a copper washer or
replace coupling if the housing is worn.
a)
7 bar (100 P.S.I.) is required
Clean or replace
b)
Tighten if necessary
a)
b)
Clean
Replace gaskets
c)
Repair and check seal
d)
a) Replace
a)
Replace gaskets
Check the level
b)
a)
Replace
b)
Replace
a) Replace
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