Figure 9
17
Scroll Enclosure Air Compressors
Electrical Diagram - SEQ2007 (20 HP)
3Ø 208-230/460V 60 Hz
PCR
Power relay
FC
Fan controller
R
Relay
FM
Fan motor
SW
Selector switch (3 notches)
NF
Noise filter
F
Fuse
J
Modular jack
FAN1, 2
Ventilation fan
PS
Pressure sensor
TH4
Temperature sensor
TH3
Temperature sensor
TH2
Temperature sensor
TH1
Temperature sensor
OCR4
Thermal relay
OCR3
Thermal relay
OCR2
Thermal relay
OCR1
Thermal relay
MC4
Magnet contactor
MC3
Magnet contactor
MC2
Magnet contactor
MC1
Magnet contactor
MOTOR4
Motor
MOTOR3
Motor
MOTOR2
Motor
MOTOR1
Motor
TRANS
Transformer for PCB
EXB
Expansion PCB
DB
Display board
MB
Main PCB