Carrier 69NT40-541-505 Operation And Service Manual page 20

2.4.3 Interrogator
Units that use the DataCORDER function are fitted with
interrogator receptacles for connection of equipment to
download the recorded data. Two receptacles may be
fitted; one is accessible from the front of the container
and the other mounted inside the container (with the
USDA receptacles).
2.4.4 Remote Monitoring
The unit may be fitted with a remote monitoring recep-
tacle. This item allows connection of remote indicators
for COOL, DEFROST and IN RANGE. Unless other-
wise indicated, the receptacle is mounted at the control
box location.
2.4.5 Quest − CCPC
Compressor−Cycle Perishable Cooling (CCPC) is a
m e t h o d o f t e m p e r a t u r e c o n t r o l u s e d d u r i n g
steady−state perishable cooling that cycles the com-
pressor on and off according to supply / return air tem-
perature conditions.
2.4.6 Communications Interface Module
The unit may be fitted with a communications interface
module. The communications interface module is a
slave module which allows communication with a mas-
ter central monitoring station. The module will respond
to communication and return information over the main
power line. Refer to the ship master system technical
manual for further information.
2.4.7 460 Volt Cable
Various power cable and plug designs are available for
the main 460 volt supply. The plug options tailor the
cables to each customer's requirements.
2.4.8 Autotransformer
An autotransformer may be provided to allow operation
on 190/230, 3−phase, 50/60 hertz power. The auto-
transformer raises the supply voltage to the nominal
380/460 volt power required by the base unit. The
autotransformer may also be fitted with an individual
circuit breaker for the 230 volt power. If the unit is
equipped with an autotransformer and communications
module, the autotransformer will be fitted with a trans-
former bridge unit (TBU) to assist in communications.
T-368
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2.4.9 230 Volt Cable
Units equipped with an autotransformer require an
additional power cable for connection to the 230 volt
source. Various power cable and plug designs are
available. The plug options tailor the cables to cus-
tomer requirements.
2.4.10 Gutters
Rain gutters may be fitted over the control box to divert
rain away from the controls.
2.4.11 Handles
The unit may be equipped with handles to facilitate
access to stacked containers.
2.4.12 Thermometer Port
The unit may be fitted with ports in the front of the
frame for insertion of a thermometer to measure supply
and/or return air temperature. If fitted, the port(s) will
require a cap and chain.
2.4.13 Back Panels
Aluminum back panels may have access doors and/or
hinge mounting.
2.4.14 Cable Restraint
Various designs are available for storage of the power
cables. These options are variations of the compressor
section front cover.
2.4.15 Upper Air (Fresh Air Make Up)
The unit may be fitted with an upper fresh air makeup
assembly. The fresh air makeup assembly is available
with a vent positioning sensor (VPS) and may also be
fitted with screens.
2.4.16 Labels
Safety Instruction and Function Code listing labels dif-
fer depending on the options installed. Labels available
with additional languages are listed in the parts list.
2.4.17 Display Module
The unit may be fitted with a backlit Liquid Crystal Dis-
play (LCD) or a Light Emitting Diode (LED) Display.
2.4.18 Emergency Bypass
The optional Emergency Bypass switch (EB) functions
to bypass the controller in the event of controller failure.
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