WARNING
WARNING
Instruction Manual Breathing Air Compressors
25
4. MAINTENANCE
4.1. MAINTENANCE RECORD
We recommend that all maintenance work is recorded in the
service book delivered with every compressor unit, showing
the date and details of the work carried out. This will help to
avoid expensive repairwork caused by missed maintenance
work. If it is necessary to claim against the warranty, it will
help to have proof that regular maintenance work has been
carried out and that the damage has not been caused by in
sufficient maintenance. Please refer to section 23 of our gen
eral terms and conditions.
4.2. MAINTENANCE INSTRUCTIONS
Always shut down and decompress
the complete system prior to carry
ing out any work on the compressor.
Never repair pressure lines by solder
ing or welding.
Check the complete system for leakage
from time to time by brushing all fittings
and couplings with soapy water or spray
ing with leak test spray. Repair any leak
age.
Only use original spare parts for mainten
ance or repair work.
Change TRIPLEX longlife cartridge accord
ing to chapter 4.5.3.!
The used cartridge must be disposed of ac
cording to local regulations.
Maintenance of drive motor/engine ac
cording to manufacturer's operating in
structions.
For units with B-Timer, observe the mainte
nance informations on the display
4.3. MAINTENANCE SCHEDULE
The maintenance schedule is contained in the service manual
delivered with every compressor unit.
4.4. MAINTENANCE WORK
This chapter contains the maintenance work as well as a
short functional description for each component. For
trouble-shooting information refer to 4.6.
4.4.1. LUBRICATION
FUNCTIONAL DESCRIPTION
The compressor is provided with a low pressure lubrication
system. The oil pressure is produced by a low reving gear
pump. The oil pressure is approximately 5 bar.
The oil pump (1, Abb. 36) is coupled to and driven by the
crankshaft. It pumps oil from the oil sump (5) through the oil
fine filter (2) and a minimum pressure valve (3) to the 3rd
stage cylinder. The oil is then distributed by the guide piston
of the 3rd stage (4) and lubricates all moving parts of the
compressor block.
The minimum pressure valve allows for oil pressure indication
at a pressure gauge and electronic oil pressure monitoring.
TYPE OF OIL
For proper care and maintenance of the compressor, using
the correct oil is of vital importance. Depending on the ap
plication of the compressor the requirements placed on the
oil are:
• low deposits
• no carbonizing effect, especially in the valves
• good anti-corrosive properties
• emulsification of the condensate in the crankcase
• for breathing air application, also physiological and toxi
cological suitability.
Due to the thermal load on the compressor only high quality
oil should be used. You are recommended to restrict oils to
those which have been approved by us and are listed in our
lubricating oil list.
The current oil list is provided in the annex.
Order this list regularly through the BAUER
Technical Service Department.
For operation under difficult conditions such as continuous
running and/or high ambient temperatures we recommend
the use of BAUER high performance compressor oils, only, ac
cording to the oil list. These oils are tested in our compressors
and have proved excellent quality under ambient tempera
tures between +5 °C (41 °F) and +45 °C (113 °F). For lower
temperatures, a heating device is required which is capable
of pre-heating the crankcase up to +5 °C (41 °F).
All our compressor units are delivered ex-
works with lubricating oil N28355 (filled
into the crankcase or as consignment, de
pending on the model).
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