Siemens E382 EH81E 061 01 03 02 Service Manual page 11

Compressor Compact
Electrical
control
function
ON/OFF
switch
Operating
time meter
E382 EH81E 061 01 03 02
Indicator lamps
Buzzer
Test button
Siemens-Elema AB
Control section
The control section contains the following
main parts:
• On/off switch
• Operating time meter
• Electrical control functions
• Test button
• Indicator lamps
• Buzzer.
Mains power to the compressor is connected
via and controlled by the on/off switch. The
operating time meter indicates how many
hours the compressor has been running.
Electrical control functions are located on a
PC board in the control section. This PC
board also contains the timing circuit for the
solenoid valves.
There are three indicator lamps (four if the
compressor is equipped with the standby
function). The test button is used to check
that the indicator lamps for temperature
alarm and pressure alarm light up.
The audible alarm (buzzer) is activated
together with the indicator lamp during
temperature alarm and pressure alarm.
Introduction
11