Master Bilt IHC-27, Руководство по установке и эксплуатации

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6/17 Rev. E 57-02410 10
MASTER-BILT
®
ELECTRONIC REFRIGERATION CONTROL
Display Lay-out
Compressor When power is first turned on to the control, the controller will go through the start-up delay. After
one-minute delay the compressor comes on. The LED for cooling indicator stays on while compressor relay is
energized. Display will show actual box temperature. Picture above is the display layout. The compressor will be
cycled off when the actual box temperature reaches its set point. The cooling indicator will be off.
Fan
The fans will run constantly except when a defrost is initiated, or when the evaporator temp is above the 30
o
F.
When in defrost mode the fan is off until the end of the defrost and the 2 minute drip time has passed. There is 2
minutes delay after a defrost before the fan comes on. If the Evaporator temperature is 35
o
F or below the controller
will override the fan delay. FAN indicator is on while FAN relay is energized.
Defrost The control uses time defrost with 2 defrost per day. The defrost scheme can be re-set the for special
applications. During defrost the display will show dEF when the defrost indicator on. The control begins timing the
defrost when power is turned on. The parameters of the controller is arranged in hours under the setting DFT. For
an example, if four defrost per day is desired, the value should be set to “4”. Or to have defrost to occur at a
specific time such as 8 am and to have “6” defrost per day, power up at 8am, 2pm, 8pm, or 2am and set DFT to
“6”.
MANUAL DEFROST
Defrosting may also be induced manually by keeping the defrost button for 3 seconds. Once defrost has started, the
cabinet will go through a defrost and drip time pull down cycle.