Howard McCray SR Series User Manual

Howard-McCray A Division of HMC Enterprises, LLC.
831 East Cayuga Street •Philadelphia, PA 19124 USA •(215) 464-6800 •(800) 344-8222
Fax (215) 969-4890 •E-Mail: techservice@howardmccray.com 120215
5
Start-Up
1. Electrically energize the cabinet. Check the
supply voltage, must be within +/- 5%. Check the
evaporator fan motors to ensure all are operating
and rotating in the correct direction.
2. Electrically energize the refrigeration system.
Check the supply voltage, must be within +/- 5%.
3. Set and check the Temperature Control
settings (as outlined in the Temperature Control
section below).
4. Verify refrigeration system is operating
properly.
5. Verify proper Defrost operation (as outlined in
the Defrost section).
6. Set the Defrost Time clock to the correct time-
of-day (as outlined in the Defrost Time Clock
section).
7. Verify the proper setting of the Crankcase
Pressure Valve (as outlined in the Crankcase
Pressure Valve section).
Controller Start-Up
: To display target set point; in programming mode it selects a
parameter or confirm an operation.
(DEF) To start a manual defrost
(UP): To see the max. Stored temperature; in programming
mode it browses the parameter codes or increases the displayed
value.
(DOWN) To see the min stored temperature; in programming
mode it browses the parameter codes or decreases the
displayed value.
To switch the instrument off, if onF = oFF.
Not enabled.
KEY COMBINATIONS:
+

To lock & unlock the keyboard.
+ To enter in programming mode.
+ To return to the room temperature display.
The controller has been programmed to delay
the compressor and fan motors for one minute. It
will take approximately 30 minutes for the
compressor to cycle, in a 75ºF room. The cabinet
will cycle between 35ºF to 39ºF.
If the alarm should go off during the pull-down
period just press the SET button on the
controller.
Alarm Program
The alarm is programmed to sound if the
temperature should reach a high of 45ºF or a low
of 32ºF by pressing the SET button on the
controller this will restart the unit until it reaches
the programmed temperature.
Individual Controller Parameters:
 Cabinet Internal Temperature
= Cut-In 39ºF,Cut-Out 35ºF
 Anti-Short cycle Delay [AC]
= 1 Minute Delay
 Defrost Termination Temp[dtE]
= 40ºF Evaporator Coil Temperature
 Between Defrost Periods [idF]
= 24 Hours
 Maximum Time in Defrost [MdF]
= 60 Minutes
 Alarm High Limit [ALU]
= 45ºF
 Alarm Low Limit [ALL]
= 32ºF
 Alarm Delay
 +10 Minutes after Limit been reached
See chart in this manual for additional parameter
settings.

Howard McCray SR Series Specifications

General

Brand	Howard McCray
Model	SR Series
Category	Refrigerator
Language	English