
QBD COOLING SYSTEMS INC.
QBD.COM
16
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Always use QBD supplied OEM parts only. Use of non-OEM
parts will not only void the warranty but may also lead to a fire,
explosion, serious injury or death.
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Only trained and certified technician, for Hydrocarbon
systems, should service these coolers.
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Use extreme caution and follow all local/regional codes for
transportation or relocation of Hydrocarbon coolers.
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Don’t overload the shelves. The cooler
is designed to use all the shelves
provided. Install in equally spaced
configuration. If fewer shelves or a
different
configuration
is
required,
contact QBD to ensure that shelf
overloading will not occur.
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Store products as evenly as possible
inside the cabinet to maintain uniform
product temperature.
14.
COLD CONTROL
Different cold controls are being used in
different models of HC coolers. All these are
certified for use in an HC unit. Please
contact QBD technical support to know
more about cold control for your unit.
All cooling deck based HC coolers are
equipped with customized CAREL cold
control (
QBD Part # 47-0520-255
). The
recommended setting is at #5 which will
allow the cooler to operate between 38-
42°F. Temperature probe should be in the
return air section.
This controller features voltage protection,
automatic defrost and energy saving logics.
DISPLAY INDICATORS
This indicates the Evaporator Motor(s)
is/are running but the Compressor is off. On
initial power up, there is an intelligent delay
for protection of the Compressor. Power to
the Compressor will initiate after one (1)
minute.
This is the typical look of the CAREL
controller while in use. "USE" indicates the
unit is in working order. The symbols to the
left of "USE" indicate that the Compressor
and Evaporator Motor(s) are both running. If
the Compressor Indicator is blinking, the
compressor is under "Time Protection".
DEFROST CYCLE
Indication that unit is in DEFROST cycle.
Evaporator Fan Motor(s) is/are ON for 4
minutes and OFF for 1 minute during this
cycle. To manually initiate the defrost cycle,
push and hold the "WARMER" button for 3
seconds. The controller will automatically
come out of DEFROST after 20 minutes. To
manually end the defrost cycle, push the
"WARMER" button for 3 seconds.
Second picture is the indication that unit is
in DEFROST MODE and Evaporator