MAINTENANCE EVERY 250 OPERATING HOURS
7-51
CHECKING THE FILTER CARTRIDGE
Usually, it is required to check each air filter cartridge before it is
re-installed. For this purpose, insert a lamp into the cartridge
and visually check the filter paper against the transmitted light. If
you detect small holes or spots on which the paper is thin, the in-
sert is defective and must be replaced.
Check filter cartridges for damaged seals.
☞
• Also new filter cartridges must be checked before they are
assembled.
ASSEMBLING THE AIR FILTER CARTRIDGE
1. Check the safety filter for proper fit.
2. Insert the filter cartridge into filter housing in such a way that
the seal of the insert locks firmly on the collar of the housing
rear panel.
3. Assemble the air filter cap.
☞
• If the control lamp lights up again after a short time, you
must replace both, the air filter cartridge and the safety fil-
ter.
CLEANING THE RADIATOR SEGMENTS
The radiator segments must be checked daily and cleaned with
compressed air, if required.
☞
• Do not hold the compressed air nozzle or water nozzle too
close to the radiator segments. Do not use a scrubber for
cleaning since the plates may be damaged.
75_250
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