WARNING
Instruction Manual Breathing Air Compressors
17
3.3. OPERATION
Preparation for operation
The compressors described in this
manual are not suitable for com
pression of oxygen. EXPLOSION oc
curs if an oil lubricated compressor is operated with
pure oxygen or gases with an oxygen content of more
than 21%!
All compressor units are tested prior to delivery
to the customer, so after correct installation of
the unit there should be no problem putting it
into operation, observing the following points:
- Prior to first operation read Instruction Manual care
fully. Make sure that all persons handling the compressor
and the filling station are familiar with the function of all
controls and monitors. Particularly observe chapter 2.
SAFETY REGULATIONS.
- Before taking unit into operation after a standstill
period of 2 years or more change compressor oil. When
using a mineral oil change oil after one year.
- Immediately after switching on the system for the
first time check the direction of rotation of the motor for
compliance with the arrow on the unit. If motor turns in
the wrong direction, the phases are not connected
properly. Shut down unit immediately and interchange
two of the three phase leads in the switch box. Never
change leads at the motor terminal board.
- Prior to first operation or operation subsequent to re
pair work operate unit for at least 10 minutes with open
condensate valves (pressureless) to ensure proper lubrica
tion of all parts before pressure is built up. To keep drain
valves open, loosen screw (3, Abb. 12) on coil (1) and pull
timer (2) from solenoid valve.
Abb. 12 Solenoid valve with timer
3
1
2
- Prior to each operation check the oil level according to
chapter 4.4.1. and determine whether maintenance is
necessary in accordance with chapter 4.3.
- Every time the unit is started up check all systems for
proper operation. If any malfunction is observed stop unit
immediately and find the cause of the fault or call the ser
vice department.
- When using extension leads or cable drums, operate unit
with unwound cable only to avoid overheating and risk
of fire. The maximum length for extension cables at nor
mal ambient temperatures (approx. 20 °C) is 25 metres.
Units with petrol engine, additionally:
- Check engine oil level according to manufacturer's in
struction manual
- Check fuel tank. Top up if necessary
- Open fuel shut-off valve.
3.4. STARTING THE UNIT
Units with electric engine without compressor control
system:
- The motor is switched on manually by pressing the start
button (1, Abb. 13).
On units with 4 kW engine without auto
matic condensate drain, the manual con
densate drain valves have to be opened be
fore starting the unit, as soon as the unit
is running the valves can be closed again.
Abb. 13 Motor protection switch
1
Units with electric engine with compressor control sys
tem:
- Place main switch (1, Abb. 14) to 1.
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