D
ISTRIBUTOR
3010
I
NSTALLATION
,
U
SE AND
M
AINTENANCE
ENG
23 / 28
10991838
EN
-
0.02
-
04.02.2021
The SE2 switch is not in the correct position
Check that the fixing screws of the switch and of the
support are correctly tightened and that the switch is in
the correct position.
If the switch is out of position, with the VB closed, return
the switch in contact with the feeler and tighten the
screws.
The switch SE2 is faulty
If VMP 2CH and VB are properly closed and SE2, even if
in the correct position, remains open. The SE2
pressure switch is faulty and must be replaced.
II. The system does not start upward
P
OSSIBLE CAUSE
P
OSSIBLE SOLUTION
The acceleration adjustment (4) is closed
(
THE SCREW
(4)
IS COMPLETELY SCREWED OR SOME DIRT
OBSTRUCT THE RESTRICTOR
)
If the screw is not in the correct position, loose it until the
required acceleration is obtained.
If the screw is in the correct position, check that the
adjustment device is clean.
Clean both if necessary.
The valve (VS) intervenes at a pressure lower
than that required.
(Usually with car fully loaded)
Increase the intervention value following the instructions
in the chapter "Adjustment of maximum pressure valve
(VS)" of this manual.
III. The system does not start downward
P
OSSIBLE CAUSE
P
OSSIBLE SOLUTION
The VMP/2CH or 2CH/S is OFF
Check the wires and connections to the coil of the VMP
The VMD solenoid valve does not open
No power supply to the coil of the VMD
Check the wires and connections to the coil of the VMD
The coil of the VMD is faulty
Replace the coil
The slider of the VMD is locked in the closed
position
Check that the mobile core moves correctly inside its
seat. Clean both if necessary.
The VRFP valve stay open
The slider of the VRFP is locked in the open
position
Loosen the fixing screws
Check that the mobile core moves correctly inside its seat
and if necessary clean both well.
At the end tighten the fixing screws
The VRP does not open (with fluid temperature >50 °C)
The release shutter of the VRP does not
work properly.
Put the system into the zero-energy status (§3.3.5)
(
SWITCH OFF THE CURRENT
,
CLOSE THE GATE
(
R
/
S
),
RELEASE
THE PRESSURE
).
Unscrew the fixing screws and remove the closing plate.
Check that the shutter moves correctly inside its seat,
without clearance or resistance.
If necessary, clean both well or replace the shutter.
At the end reassemble the closing plate and tighten the
fixing screws.
If the problem persists, the complete distributor must be
replaced.
IV. The system starts with late
P
OSSIBLE CAUSE
P
OSSIBLE SOLUTION
U
PWARD
: The acceleration adjustment (4) is
almost closed
(
THE SCREW
(4)
IS COMPLETELY SCREWED OR SOME DIRT
REDUCES THE OPENING OF THE RESTRICTOR
)
If the screw is not in the correct position, loose it until the
required acceleration is obtained.
If the screw is in the correct position, check that the
adjustment device is clean.
Clean both if necessary.