Wiring Diagrams - Dometic Frigo Series Installation Manual

Connecting the transport refrigeration system
9.4

Wiring diagrams

Flowchart key for R-134a (fig. e, page 9)
9.4.1
v
Item Description
1 Evaporator
2 Expansion valve
3 Condenser
4 Filter dryer
5 Compressor
6 Solenoid valve closed normally
7 Service valve, high pressure
8 Service valve, low pressure
9.4.2 Electrical circuit diagram key (circuit diagrams see
supplementary sheet)
Item Description
A1 Control unit
A2 Evaporator unit 3500
A3 Evaporator unit 2500
BAT Battery
BL Battery charger
C1 Inverse diode
D2 Pressure transducer
F1 Blade fuse, 3 A
F5 Blade fuse, 15 A
F6 Blade fuse, 30 A
F7 Blade fuse, 100 A
F8 Blade fuse, 150 A
F9 Blade fuse, 1 A
F10 Blade fuse, 10 A
G1 Central earth point
RL1 Relay 12 V 70 A
RL2 Relay 12 V 30 A
RL7 Relay 12 V 200 A
K1 Compressor
M1 Evaporator fan
32
Function
Entire system control
(only with stationary cooling, optional)
(only with stationary cooling, optional)
(only with stationary cooling, optional)
(only with stationary cooling, optional)
Evaporator fan control
Compressor/condenser fan control
Compressor control
Frigo DC
EN