2-14
T-294-01
2.9 REMOTE MONITORING (RM) -- Optional
NOTE
The in-range light will be illuminated if the
container control air temperature is within the
tolerance selected. Refer to section 3.1.4 (Code
30).
When the remote monitor plug is connected to the
remote monitoring receptacle, the following remote
circuits are energized:
CIRCUIT
FUNCTION
Sockets B to A Energizes remote cool light
Sockets C to A Energizes remote defrost light
Sockets D to A Energizes remote in-range light
2.10 SAFETY AND PROTECTIVE DEVICES
Unit components are protected from damage by safety
and protective devices listed in Table 2-1. These
devices monitor the unit operating conditions and open
a set of electrical contacts when an unsafe condition
occurs.
Open safety switch contacts on either or both of devices
IP-CP or HPS will shut down the compressor.
Open safety switch contacts on device IP-CM will shut
down the condenser fan motor.
The entire refrigeration unit will shut down if one of the
following safety devices open: (a) Circuit Breaker(s);
(b) Fuse (F3/10A); or (c) Evaporator Fan Motor Internal
Protector(s) -- (IP-EM).
Table 2-1. Safety and Protective Devices
UNSAFE CONDITION
SAFETY DEVICE
DEVICE SETTING
Circuit Breaker (CB-1) -- Manual Reset
Trips at 29 amps
(460 vac)
Excessive current draw
Circuit Breaker (CB-2,
50
amp) --Manual Reset
Trips at 62.5 amps
(230 vac)
Circuit Breaker (CB-2,
70
amp) --Manual Reset
Trips at 87.5 amps
(230 vac)
Excessive current draw on the
control circuit
Fuse (F3)
10 amp rating
Excessive current draw by the
Controller/DataCORDER
Fuse (F1 & F2)
5 amp rating
Excessive condenser fan
motor winding temperature
Internal Protector (IP-CM) -- Automatic Reset
N/A
Excessive compressor motor
winding temperature
Internal Protector (IP-CP) -- Automatic Reset
N/A
Excessive evaporator fan
motor(s) winding temperature
Internal Protector(s) (IP-EM) -- Automatic Reset
N/A
Abnormal
pressures/temperatures in the
high refrigerant side
Rupture Disc -- Used on the Water-Cooled
Condenser
35 kg/cm
@
= (500 psig)
Abnormally high discharge
pressure
High Pressure Switch (HPS)
Opens at 25 kg/cm
@
(350 psig)
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