Reference Designation
(6) Overload, fan motor
(7) Fault, EWD
(8) Dp, DD filter
(9) Dp, PD filter
(10) Remote pressure set selection
(11) ES 100 (if installed)
(12) Remote emergency stop
(13) Auxiliary contacts
(14) Manual/automatic operation
(15) General warning
(16) General shut-down
References used (typical) in the electric diagram of the compressor:
Below list is a general list. Some references are only used for specific versions.
Reference Sensors / solenoid valves / electronic water drain
A1 Dryer (units with integrated refrigeration dryer)
B1 Electronic water drain (EWD)
PDT01 Pressure sensor, pressure difference across oil separator
PT20 Pressure sensor, air outlet
TT01 Temperature sensor, ambient air
TT11 Temperature sensor, element outlet
TT53/54 Temperature sensor, energy recovery water inlet/outlet (compressors equipped with the
option Energy Recovery)
TT90 Temperature sensor, LAT dryer (compressors with integrated refrigeration dryer)
Y1 Loading solenoid valve
Reference Motors
M1 Compressor motor
M2 Fan motor (on air-cooled compressors)
Reference Electric cabinet
F1/9 Fuses
F21 Overload relay, drive motor
K21 Line contactor
K22 Star contactor
K23 Delta contactor
Q15 Circuit breaker, fan motor
T1 Transformers
1X0 -1X7 Terminal strips
X101-117 Connectors
Instruction book
20 API603130
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