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Series 1 Portable Chillers, PLC Control
UGH017/0500
6-18
T
ROUBLESHOOTING
The Conair Portable Chiller uses a standard 100 ohm RTD to
monitor process temperature. A transmitter is also included
and is located in the temperature transmitter electrical box.
To check the temperature transmitter and RTD:
Disconnect and lockout power to the chiller.
Open the electrical enclosure.
Check wire connections at the terminals. Refer to the
wiring diagram.
Find the temperature sensor in the evaporator.
Check the wiring and connections
from the sensor to the temperature transmitter electrical
box.
Turn the power on to the chiller control.
Check the voltage, resistance and amperage.
1
2
3
4
5
6
C
HECKING THE
T
EMPERATURE
T
RANSMITTER
AND
RTD
Always refer to the wiring
diagrams that came with
your chiller to locate specific
electrical components.
Temperature
transmitter
electrical box
RTD
Evaporator
WARNING: Electrical hazard
Before performing any work on this unit, discon-
nect and lock out electrical power sources to
prevent injury from unexpected energization or
startup.