Maintenance and inspections
36
X
Carefully operate the «Lift» control (inching mode) until the slave cylinder
reaches the stop.
X
Switch off the filling valve Y7 (switch S8 in the control column).
X
Repeat the following steps until the synchronisation of the wheel-free lifts is
achieved:
X
Press the «Lower» control until both wheel-free lifts are completely low-
ered.
X
Press the «Lift» control until both wheel-free lifts are at the upper stop.
X
Press the «Lower to latched position» control; the master wheel-free lift
lowers into the latched position.
X
Unscrew the bleeder screw on the master cylinder 3-4 revolutions until oil
escapes; the slave wheel-free lift lowers into the latched position.
X
Tighten the bleeder screw.
X
Press the «Lift» control and check the synchronisation.
X
Switch off the synchronisation monitor (turn off switch S9 in the control col-
umn). The control light is now continuously lit.
The aeration of the wheel-free lift hydraulic system is completed.
9.5.4
Checking the hydraulic hoses
For hydraulic hoses, a yearly inspection of operationally safe condition is pre-
scribed. The inspection must be performed by a qualified and authorised special-
ist!
Hydraulic hoses conforming to DIN EN 853/2SN or DIN EN 856/4SP are built into
the machine.
Checking the hydraulic hoses
X
Perform a visual check of the hydraulic hoses:
X
Is any damage on the exterior, such as cracks, kinks, cuts, stripped
points, areas of abrasion, brittleness, etc., detectable?
X
Are there any deformations of the hose in either depressurised or pres-
surised condition?
X
Are there any leaks between hose and fittings?
X
Does the hose become detached from the fittings?
X
Replace hydraulic hoses if damage is detected, but after every 6 years at the
latest.
The inspection is completed.
9.6
Inspections
9.6.1
Regular inspections
Regular inspections of the machine are to be performed by a qualified and au-
thorised specialist at intervals of a year at the longest.
In Germany, inspection according to GUV-G 945 must be carried out. For this,
use the inspection log book in the appendix of this operating manual.
Summary of Contents for ML40
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