Siemens E382 EH81E 061 01 03 02 Service Manual page 9

Compressor Compact
Thermoelectric cooler
Drainage
bottle
Water
separator 1
Water
separator 2
Low
pressure
switch
E382 EH81E 061 01 03 02
Standby
solenoid
valve
Standby
pressure
switch Fan
Siemens-Elema AB
Water separators 1 and 2 are automatically
drained at regular intervals by the two filter/
solenoid valves. The water is collected in the
drainage bottle.
A low pressure switch is connected to the
compressed air reservoir. This switch
(sensor) detects the air pressure inside the
compressed air reservoir and activates the
pressure alarm if the air pressure in the
reservoir drops.
Compressors equipped with the standby
function also include a standby solenoid
valve and a standby pressure switch.
Compressed air from the hospital central gas
supply is connected to the compressed air
reservoir (via the standby solenoid valve). If
the hospital central gas supply fails, the
pressure in the reservoir drops. This air
pressure drop is then detected by the
standby pressure switch and the compressor
starts to deliver compressed air to the
reservoir.
The electric power supply functions (trans-
former, rectifier, capacitors, etc.) are located
in the dryer section. Internal power supply is
distributed from the electrical interconnection
block. The mains power fuses and the
cooling dryer fuse are also situated at the
electrical interconnection block.
The dryer section also contains a fan to
provide forced air cooling in the cooling
section and compressor section. Two dust
filters remove dust particles from the ambient
air before the air is drawn into the fan.
Introduction
9