39 / 50
MS2S
Cleaning and servicing
Bosch Rexroth AG
R911410077, Edition 01
Table 17: Derating factors for self-cooling 100K
Height
[m]
40 °C 45 °C 50 °C 55 °C 60 °C
1,000 1.00 0.96 0.92 0.88 0.85
1,500 0.97 0.93 0.89 0.85 0.82
2,000 0.94 0.90 0.86 0.83 0.80
2,500 0.90 0.86 0.83 0.79 0.77
3,000 0.86 0.83 0.79 0.76 0.73
9
Maintenance
9.1
Cleaning and servicing
WARNING
Operations in the vicinity of live parts are
extremely dangerous.
−
Work required on the electric system may
only be carried out by skilled electricians.
Tools for electricians (VDE tools) are abso-
lutely necessary.
−
Isolate (even auxiliary circuits).
−
Secure against reactivation.
−
Ensure de-energization.
−
Ground and short-circuit.
−
Cover or shield any adjacent live parts.
WARNING
Personal and material damage during mainte-
nance work in operation!
−
Never carry out maintenance work on run-
ning machines.
While carrying out maintenance work,
secure the machine such that it cannot
restart or be used by unauthorized persons.
CAUTION
Hot surfaces with temperatures over 60 °C may
cause burns!
−
Allow the motors to cool down prior to com-
mencing work.
Wear safety gloves.
Do not work on hot surfaces.
Motors
Dirt, dust or chips may adversely affect the func-
tionality of the motors and, in extreme cases,
even cause a failure of the motors. Therefore, in
regular intervals (after one year at the latest), you
should clean the surface of the motors in order to
achieve a sufficiently large heat radiation surface.
If the cooling fins are partially covered with dirt,
sufficient heat dissipation via the ambient air is
no longer possible.
Insufficient heat dissipation can have undesirable
consequences. The bearing life is reduced by
operation at inadmissibly high temperatures
(bearing grease decomposes). Overtemperature
switch-off despite operation on the basis of
selected data, because the appropriate cooling is
missing.
Connection cables
WARNING
Electric shock due to contact with live parts!
−
Change damaged connection cables and
decommission the plant immediately.
Do not repair any connection lines provi-
sionally.
•
Check the connection cable for damage at
regular intervals and replace it if necessary.
•
Check optionally existing drag chains on
defects.
•
Check the protective conductor connection
at regular intervals for proper condition and
tight fit and replace if necessary.
Maint
enance
