Technical information

UGH021/0301 VL Series Portable Chillers, 2 to 40 Tons
Page: 55
7.8 VLA-15/20/25/30 ELECTRICAL
VL Chiller Control
Temperature
To Process Setpoint
Power Pump Compressor Hot Gas Bypass
On
Off
MOLEX
RED/ORG BLU
ORG
WHT
RED/BRN
RED/WHT
RED/YEL RED/BLU
RED
RED/BLK 29
OPTIONAL
2 MOL
21
TANK FLOAT
M1
M3
FREEZESTAT
19 19
19
19 20
WATER MAKE-UP SOLENOID (OPTIONAL)
5020 50
20
MOTOR COIL
23 2322 23
20 21 24 23
50 50
50
27
50 50
28 28
28
30
29
29 29
31 27 28
INSTRUMENT GROUND HOT GAS BY-PASS SOLENOID LIQUID LINE SOLENOID COMPRESSOR COIL
1 MOL
4 MOL
50
32
19
50
28 50
M4
BLOWER COIL
50
19
110VAC SEC. GROUND
FU
3
L1 L2 L3 L4
GROUND
POWER ENTRY
FU 1 FU 2
BLOWER
M4
4 MOL
M4
M1
2 MOL
M1
M2
1 MOL
PROCESS PUMP EVAPORATOR PUMP
M3
M3
COMPRESSOR
M3
CRANKCASE
HEATER
TRANSFORMER
(OPTIONAL)
4
1
2
3
1
2
3
5
6
4A
5A
6A
7
8
9
10
11
12
13
14
14
15
1
3
15
Q
Q
Q Q
HIGH PRESSURESTAT
BRN
LOW PRESSURESTAT
35
35
19
GRN
PROBE
TO PROCESS
SAFETY SWITCH
OIL PRESSURE
CONTROL MODULE
COMPRESSOR
32A
23 50
FOR REMOTE START/STOP. OPTIONAL CUST. SUPPLIED CONTACTS
JUMPER
ANTI DRAIN-BACK SOLENOID
(OPTIONAL)
This electrical drawing is presented for illustration purposes only.
For exact details, consult the electrical drawing supplied with your machine.