HAWE Hydraulik HLU LE-X, Руководство по сборке

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Fault Possible cause Check Remedy
Solenoid M1 faulty Check resistance R; if
R
→
∞, solenoid M1 is
faulty.
Replace solenoid M1.
Contact HAWE.
Solenoid M2 faulty Check resistance R; if
R
→
∞, solenoid M2 is
faulty.
Replace solenoid M2.
Contact HAWE.
Operate the emergency
override. If unlocking is
not possible when the
emergency override is
operated, the restraint
system must be opened
as instructed in chapter
Chapter 7.3.3 .
Locking unit must be
replaced. Contact HAWE. Check valve is under
heavy hydraulic load, and
solenoid valve cannot
switch check valve.
When energized, valves
V1, V2 or V1 and V2
cannot switch against the
hydraulic pressure and
the hydraulic locking unit
remains locked. Operate both valves and
simultaneously move the
piston rod in the locked
direction.
Solenoid M1 faulty Check resistance R; if
R
→
∞, solenoid M1 is
faulty.
Replace solenoid M1. Piston rod only extends or
retracts when emergency
override operated
(unlocking only possible
when emergency override
is operated)
Solenoid M2 faulty Check resistance R; if
R
→
∞, solenoid M2 is
faulty.
Replace solenoid M2.
Internal leakage n.a. Locking unit must be
replaced. Contact HAWE. Piston rod does not extend
fully
(restraint system does not
open enough)
Nitrogen pressure loss in
piston type accumulator Top up according to the
data sheet specifications
using the HAWE lling set
(see accessories on the
technical data sheet). As described in
Chapter 8.5
Piston rod not holding
locking position (lock
faulty) Internal leakage n.a. Locking unit must be
replaced. Contact HAWE.
Piston rod extension speed
exceeded
(temporary slack). Check restraint system
closing speed and compare
against technical data
specifications. Reduce restraint system
closing speed.
Not enough hydraulic
uid is owing from the
accumulator into the
locking unit
because the ambient
temperature is too low
(temporary slack). Check ambient tempera-
ture and operating
temperature of hydraulic
system and compare
against technical data
specifications. Locking unit must be
operated within the
specifications.
(Unit must be adjusted
if operating temperature
changes permanently.
Contact HAWE.)
Piston rod can be moved
2 to 10 mm in locking
direction at 20°C.
(Locking is delayed after
closing the restraint
system.)
Piston rod can be moved
permanently in locking
direction
(permanent slack). Permanently trapped air in
locking unit. Locking unit must be
replaced. Contact HAWE.
HAWE Hydraulik SE B 6052-21 -
11
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