Thermo King CSR Series User Manual

Operating Instructions
52
Other Unit Controls
1. Evaporator Overheat Switch: A temperature
switch near the evaporator coil opens to
de-energize the heater contactor if the
evaporator temperature reaches 54 ± 3 C
(130 ± 5 F). The switch closes (resets) when
the evaporator temperature decreases to
38 ± 4.5 C (100 ±8 F).
2. Water Pressure Switch (Option): When water
pressure greater than 117 ± 21, 1.17 ±
0.21 bar, 17 ±3 psig is provided to the
condenser-receiver tank, the water pressure
switch closes. This causes the controller to
stop condenser fan operation. When the water
pressure decreases below 35 ± 21 kPa, 0.35 ±
0.21 bar, 5 ± 3 psig, the switch opens, causing
the controller to place the unit on air-cooled
condenser fan operation.
NOTE: Water-cooled condenser requires a
water flow of 19 to 38 l/min.
(5 to 10 gal./min.).
Unit Instruments
1. Compressor Oil Sight Glass: A compressor oil
sight glass indicates the relative level of
compressor oil in the compressor sump.
2. Suction Pressure Gauge (Option): A suction
pressure gauge indicates the refrigerant
pressure in the suction line returning to the
compressor.
3. Discharge Pressure Gauge (Option): A
discharge pressure gauge indicates the
refrigerant pressure in the discharge line
leaving the compressor.
4. Thermistor Lead (Option): A thermistor lead
is located in the unit control box to provide air
temperature verification. The bulb of the
thermistor lead is attached to the return or
supply air sensor in the evaporator section.
5. Remote Monitor Connector, 4-pin (Option): A
receptacle is provided on the side of the
control box for connecting the ship’s 4-pin
bridge light system to the unit. The connector
provided circuits for Compressor On, Defrost
and In-range. The Remote In-range light is
activated when the controlling air sensor
temperature is between 1.7 C (3.0 F) above
setpoint and 2.5 C (4.5 F) below set-point.
6. Recording Thermometer (Option): The
recording thermometer indicates and
permanently records the temperature of the air
returning to the evaporator section on a
calibrated chart.
7. Power Line Communications Modem
(Option): A REFCON remote monitoring
modem is available to provide remote
monitoring via the power cable. High speed
transmission reads all controller information.

Thermo King CSR Series Specifications

General

Brand	Thermo King
Model	CSR Series
Category	Refrigerator
Language	English