88
In order to trace the origin of the fault,
interrupt the engine oil temperature
switch (with the engine oil pressure
switch still switched off). If the lamp now
goes dark this indicates that the problem
is related to the oil temperature.
* If the lamp continues glowing the fault
is located somewhere else. In this case
reconnect the engine oil temperature
switch and interrupt the connection to
the compressor temperature switch. If
the lamp goes dark the compressor
temperature has led to the cut-out.
* Reconnect all electrical connections
once the fault has been identified in
order to re-establish the function of the
protective elements. Also reconnect
the engine oil pressure switch.
* Switch the ignition switch to its position
(Off-Aus).
Note
These checks must be carried out
immediately after the installation has
cut out as the protective circuits reset
themselves after cooling down.
If the ignition switch is pushed to the very
left while the machine is running it will be
switched off.
Pressure gauge for display: “Operating
pressure”
Fig. 22
Danger
Do not operate the compressor at
pressures above the permissible
operating pressure.
The pressure gauge shows the operating
pressure of the compressor.
The permissible operating pressure is
indicated on the nameplate! The safety
valve pressure is indicated on the pressure
gauge by a red mark.
Display for compressor temperature
Fig. 23
Attention
Do not operate the compressor above
the permissible final compression
temperature.
The final compression temperature is
measured with the temperature sensor and
displayed on the thermometer (option).
The compressor is automatically shut
down when the permissible final
compression temperature is exceeded.
7.6 Operation
Danger
Only operate the compressor at the
permissible operating pressure and at
the permissible temperature.
Only use the compressor for its
intended purpose (see Chapter 1.2 of
this operating manual) in order to avoid
residual risk for persons and assets.
Only operate the compressor in a safe,
functioning condition.
All components, hoses etc. fitted must
be of the correct size and designed for
the specified operating pressure and
temperature.
When working with compressed air,
wear suitable protective clothing (e.g.
protective suit, safety goggles, etc.).
Wearing ear muffs may impair
communication between persons.
Warnings may not be heard. Inform
supervisor.
Check the compressor regularly.
Leaking condensation contains a
proportion of oil and must be collected
and disposed of under safe conditions.
Condensation must not enter the
soil or the rivers. Major quantities of
condensation accumulate particularly
in versions with aftercoolers for
processing compressed air. Provide a
collecting basin.
7.7 Shutdown
In order to shut down the compressor:
* Close air discharge valves. The screw
compressor reduces the speed of the
engine back to idling speed after the
preset final pressure has been reached.
* Allow the screw compressor to idle for a
few minutes.
* Return the ignition switch (1) to the
position
(Off-Aus).
Note
This switch can also be used as an
emergency stop switch. No other switching
off method is provided.
After the installation has come to a
standstill all the air is automatically blown
out of the pressure tank via the blow-off
valve.
Danger
It is important that you ensure that the
pressure is completely blown off via the
blow-off valve.
Should this not be the case, open the air
outlet valves, identify the fault and
correct it.
7. Putting the compressor into operation
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