Delfield mdbr1-gh Instruccion De Instalación

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The ERC-2 Electronic Refrigeration Control is a microprocessor-based 

electronic controller designed to control both the temperature and the 

defrost functions of a commercial refrigeration unit.  Designed for 115 

or 208/240 (50 or 60 Hz), the control comes with four relay outputs: 

compressor, defrost, evaporator fan and alarm.

The ERC-2 includes a digital display module that provides readout of 

the temperature, time and built-in diagnostics.  The display module 

can be mounted locally or remotely from the unit and it contains a 

touch keypad for simple programming.  For defrost control, it uses a 

real time clock.

This control is NSF certified and it can be applied to many different 

commercial refrigeration applications like reach-ins, walk-ins, refriger-

ated cases, or other different products where accurate control of 

refrigerated space and defrost cycles is required.

Input Power: 115/208-240 VAC 50/60Hz (-10%, -15%)

Zone and Evaporator Temperature Sensor: NTC thermistor:  Range 

-40 to 199°

Output Relay Ratings:

Compressor: 1hp@115V

Defrost: 16A resistive at 115/208-240V pilot duty 470 VA@120/

208-240V

Evaporator fan: 1/2 hp at 120V, 3/4 hp at 208V, 1 hp at 240V

Alarm: 5A resistive at 115/208V

Ambient Operating Conditions: -40% to 122°F; 0 to 95% RH

Agency Certifications UL, CSA, NSF

The default parameters for Delfield will be pre-programmed.

In case of a power failure, the control has a safe operating mode in 

case of sensor failure.

Accessing

Level 1: Press and hold the SET button for five sec.

Level 2: Press and hold the SET and DOWN button for 10 sec.

Scroll through the parameters using the UP and DOWN arrow keys.  

Choose the parameter to be changed by pressing SET.  Scrolling 

through the options or set the time or temperature by using the UP 

and DOWN arrow keys.  Once you choose the option or adjusted the 

time or temperature, press SET to accept the option.

The ERC-2 control initially powers up displaying 12 AM otherwise 

it will show the last configured selection (time or temperature).  If 

a power outage occurs during normal operation, the control will 

maintain the correct time of day using a capacitor (batteries are not 

required).  The time will be maintained for up to 100 hours when the 

capacitor is fully charged.

To initiate a Manual Defrost, press and hold the MAN DEF key for 3 

seconds.

There are two levels of programming in the ERC-2.  The first of secu-

rity will enable the user to set two parameters:  Time-of-day (CLoC 

and setpoint temperature SET).  The other level allows access to the 

other parameters.

Three buttons are used for the programming: SET, UP AND DOWN.

STEP 1  SET 

Press and hold SET for 5 seconds.  The 

display will show CLoC

STEP 2  SET 

Press SET again to change the time of 

day.

STEP 3  UP OR DOWN  Press UP or DOWN until the correct time 

of day is displayed.

STEP 4  SET 

Press SET to accept the new time.

STEP 5  DOWN 

Press DOWN to go to the next parameter 

- Set point temperature -SEt (cut out).

STEP 6  SET 

Press SET to change the set point tem-

perature.

STEP 7  UP OR DOWN  Press UP or DOWN to go to the desired 

setpoint.  The range is - 40° to 60°F or 

-40 to 16°C.

STEP 8  SET 

Press SET to accept the change.

STEP 9  DOWN 

Press DOWN to exit the first level of 

programming.

NOTE 1: During programming, if no button is pushed 

during 30 seconds, the control will go back to the 

normal operating mode.  This is valid for both pro-

gramming levels.

NOTE 2: When changing the time, press and hold the 

MAN DEF button for 3 seconds to change the AM/PM 

mode.

NOTE: By lifting gray plastic cover, buttons will be exposed.

For more information on the ERC Control, please log onto our web 

site at www.delfield.com and go to the Parts and Service section, then 

to the Service Department page.