Hoshizaki 73168 service manual Temperature Correction Factor

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f) Temperature Correction Factor

In cases where there is a discrepancy between the actual cabinet or rail temperature and the displayed temperature, a temperature correction factor is used to correct the displayed temperature.

WARNING

This unit has been factory tested with the default settings listed. Avoid using this function except to confirm that the setting is correct. If set incorrectly, the display could show an acceptable temperature even though the temperature is out of the proper range. This value should only be changed after consulting with the Hoshizaki Technical Support Department at 1-800-233-1940.

To view the current values, move the power switch to the "ON" position while pressing the up arrow button. The current cabinet temperature correction factor will be shown. If "18" is displayed, the value is 1.8°F (1°C). Press the cabinet "SET" button to display the rail temperature correction factor.

Temperature Correction Factor

 

Default

 

Area

Setting Range

1-Section

2-Section

3-Section

Cabinet

-9 to 9°F in 0.9°F increments

0°F (0°C)

TBD

Rail

(-5 to 5°C in 0.5°C increments)

1.8°F (1°C)

(0.9°F (0.5°C)

TBD

Negative values are indicated by an LED to the left of the value (Decimals are not shown on display)

If it is determined through discussion with Hoshizaki Technical Support that the setting needs to be changed, follow the steps below.

1)Display the cabinet or rail temperature correction factor as outlined above.

2)Press the up or down button to increase or decrease the cabinet value.

3)Press the cabinet "SET" button to save the new cabinet value.

4)Press the cabinet "SET" button again to view the rail value.

5)Press the up or down button to increase or decrease the rail value.

6)Press the cabinet "SET" button to save the new rail value.

7)Turn the power off and then back on. The unit will start running with the new value(s).

[Example]

When the actual cabinet temperature is 5.4°F (3°C) higher than the displayed temperature, change the temperature correction factor to 5.4°F (3°C), so that the displayed temperature matches the cabinet temperature.

47.8°F (8.7°C)

Actual Area Temperature

 

5.4°F (3°C) Difference

42.4°F (6°C)

Displayed Temperature

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Contents Superior Degree Reliability Number Issued Revised Hoshizaki AMERICA, INC Contents Page Page Important Safety Information Serious injuryIndicates important information about the use and care UnitSpecifications Nameplate Ratings DimensionsII. General Information Construction Sequence of Operation Power Switch ON, Rail Cooling Switch OFFPower Switch ON, Rail Cooling Switch Normal or LOW Cool Down Restart Cabinet DefrostCabinet Defrost Power Switch ON, Rail Cooling Switch OFF Rail DefrostPower Switch ON, Rail Cooling Switch OFF Cabinet OperationPower Switch ON, Rail Cooling Switch Normal or LOW Position Rail CoolingCabinet and Rail Cooling Control Board Control Board LocationFront Rear Control Board LayoutLED Display and Service Lock-Out Alarm SignalService Menu Compressor Short Cycle ProtectionTemperature Display Controls and AdjustmentsSwitch Settings Cabinet Defrost Temperature SetpointEnergy Saving Mode Temperature Correction Factor Service Menu Service Menu AccessService Menu Chart Control Board Replacement Alarm SignalsControl Board Check Procedure Compressor Protector Thermistor CheckPerimeter Heater III. Service Diagnosis Alarm SignalsAlarm Priority Problem Reset, Corrections, and Adjustments High Temperature Alarm E1 Reset OptionsLow Temperature Alarm E2 Cabinet Defrost Alarm E3 High Condenser Temperature Alarm clogged filter E7 5a. Secondary Defrost Thermistor Rail, not used Defrost Thermistor cabinet Malfunction Alarm E8Possible Causes Condenser Thermistor Malfunction Alarm E9 No Operation Service ChartControl Board Alarms EA and ED Cabinet Cooling Problem Possible Cause Remedy Rail Cooling Cabinet Defrost Other Refrigerant Recovery IV. Removal and Replacement of ComponentsService for Refrigerant Lines Brazing Evacuation and Recharge R-404APage Removal and Replacement of Refrigeration System Cartridge Refrigerant Recovery ProcedurePage Refrigeration System Pump‑Down Procedure Page Defrost Thermistor Rail Thermistor Removal and Replacement of Compressor Removal and Replacement of Cabinet Evaporator Removal and Replacement of Expansion Valve Removal and Replacement of Liquid Line Valve Removal and Replacement of Condenser Defrost Thermistor Removal and Replacement of Thermistors and ThermostatCabinet Thermistor Defrost Thermostat Rail ThermistorRemoval and Replacement of Defrost Heater Condenser Thermistor clogged filterRemoval and Replacement of Fan Motors Cabinet Fan MotorCondenser Fan Motor Rail Fan MotorRemoval and Replacement of Door Gasket Door Re-Hinging and Drawer ConversionCleaning and Maintenance Instructions Work SurfaceRail and Rail Cover ExteriorCabinet Interior Door/Drawer GasketsMaintenance Power Supply ConnectionRail Condensate Pan Air FilterShutdown and Long Storage Refrigeration Circuit VI. Technical Information HPR100A-DWiring Diagrams HPR46A-D2a. HPR72A-D Auxiliary Code U-5 and Earlier 2b. HPR72A-D Auxiliary Code U-6 and Later Awaiting Data