30
DPT260
Check of possible oil leaks
throughout the hydraulic
system. (A007)
Check visually that there are no oil leaks in the hydraulic pump, pipes and fittings.
Verify the complete tightening of all the hydraulic fittings using an hexagonal
wrench of the proper size.
When bollard is in down position check the oil level in the pump through the
transparent spyhole; oil level must fill at least half of the transparent spyhole. If
the oil level is lower top it up. Read the chapter 10: SPECIFIC OPERATIONS.
ATTENTION: this check must be performed when the hydraulic pump is
“cold”
(not to be carried out after several consecutive movements which may
cause the oil heating in the hydraulic system).
When bollard is down, connect the pressure gauge to the pressure outlet in the
hydraulic system (this is possible starting from 2008 models, on the contrary in
older versions there is no pressure outlet). Rise the bollard and at the same time
check that the pressure is included in a range between 10 and 15 bar. When
bollard is up check that the pressure ranges from 35 and 45 bar; after 5 minutes
check that it is still above 30 bar. If the pressure drops quickly, make sure that
there are no oil leaks in the hydraulic system, check the lowering solenoid valve
or replace the block valve of the hydraulic unit. Read the chapter 10: SPECIFIC
OPERATIONS.
The hydraulic system is equipped with an hydraulic pressure switch which
analyzes the pressure in the system; when the bollard is rising and the pressure
switch detects a pressure increase (usually caused by the detection of a weight
corresponding to 40 kg or more on the bollard e.g: a person) the bollard stops
and goes back to down position. Check the proper functionality of the safety
reversal managed by the pressure switch using a sample weight (e.g: a barrel
filled with 40 l of water). Otherwise adjust or replace the pressure switch. Read
the chapter 10: SPECIFIC OPERATIONS.
The hydraulic system is equipped with an hydraulic pressure switch which
analyzes the pressure in the system; when the bollard completes the rising, the
pressure switch detects an increase due to the moving cylinder in up position,
consequently the control unit ends its rising phase by stopping the operation of
the hydraulic pump. Check that once the moving cylinder stops in up position,
also the pressure switch makes the hydraulic pump stop in about 4s. Otherwise
adjust or replace the pressure switch. Read the chapter 10: SPECIFIC
OPERATIONS.
Check the proper grip of screws and bolts by using the standard handling
equipment (hexagonal fix wrenches – Allen wrenches – screw drivers).
Check of the oil level in the
hydraulic pump and possible
topping up. (A008)
Check of the pressure in the
hydraulic system. (A009)
Check of the safety reversal
managed by the pressure
switch when the bollard is
rising (reversal caused by the
detection of approx. 40Kg on
the bollard).
ATTENTION: when bollards are
equipped with E.F.O circuit the
reversal function is not
enabled.
(A010).
Check of the rising interruption
managed by the the pressure
switch. (A011)
Overall check of the proper
grip of the screws. (A012)
UK
