ICM CONTROLS ICM550 (01) PDF Document

Inputs:

Nominal voltage range: 120-240 VAC

Frequency: 60Hz

Outputs:

Type: Relay

Contact Ratings:

Compressor: [2]&[4]: 30A R, 1HP@120VAC, 2HP@240VAC

Electric heat: [1]&[3]: 40A R, 1HP@120VAC, 2HP@240VAC

Fan: [1]&[F]: 30A R, 1HP@120VAC, 2HP@240VAC

Environmental:

Operating temperature: -40 to +131°F

Operating humidity: 0-95%, non-condensing

Mechanical:

Construction: Open board (plastic bracket mounted)

Mounting: Vertical or Horizontal orientation

Timing:

Minimum defrost time: 15 minutes

Maximum defrost time: 23 hours 45 minutes

Terminate defrost: Defrost can be terminated by shorting “X to N”

ELECTRICAL SHOCK HAZARD! Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before working on a high voltage control.

CAUTION! Installation of the ICM CONTROLS ICM550 shall be performed by trained technicians only. Adhere to all local and national electric codes.

WARNING! Never turn the dial backward, always turn the dial clockwise to adjust. Do not attempt to touch or adjust the hands of the clock as this may cause permanent damage to the clock.

Terminal Block: “USE COPPER WIRES ONLY”

Turn the outer dial clockwise until the inner clock hands point to the correct time. Each tick mark on the outer dial represents 15 minutes.

The inner dial is representative of a conventional clock, with the printed “hand” showing the hour and the physical hand showing the minute. The time displayed on the inner dial will always correspond with the time on the outer dial.

Decide the amount of defrost time necessary for your environment and the hours which you want defrost to occur. Next, set the switches for each 15 minute interval of defrost you require by moving the switch to the outer position.

Each switch represents a 15 minute interval of defrost and there are 4 intervals per hour.

If multiple defrost cycles are required, please select the appropriate dipswitches to represent each 15 minute interval throughout the 24 hour period where defrost is desired.

Defrost mode: (Red LED)

Refrigeration mode: (Green LED)

The Mode selection switch is used to set up the condition of relay K2 based on the model you are replacing. When set up in Position A, relay K2 is normally closed and will open in defrost. When set up in position B, relay K2 is normally open and will close in defrost.

Mode “A” Operation

Refrigeration Mode: Green light ON and Red light OFF (K1 NC, K2 NC)

Defrost Mode: Red light ON and Green light OFF (K1 NO, K2 NO)

Mode “B” Operation

Refrigeration Mode: Red and Green lights OFF (K1 NC, K2 NO)

Defrost Mode: Red and Green lights ON (K1 NO, K2 NC)

Refer to the following tables to determine the correct switch position (A or B) based on the model you are replacing:

1. Push plastic tab DOWN to release the cover and pull the cover out of the enclosure.

2. Push plastic tab DOWN to release the board.

3. Pull the bottom of the existing board UP until the board is detached from the enclosure.

4. Remove the four screws to release the ICM CONTROLS ICM550 from its bracket. The four holes will be used to connect the ICM550 to the Grasslin enclosure. Discard the bracket and screws.

5. Align the ICM CONTROLS ICM550 so it slides UP and INTO the plastic channels, while ensuring the screw holes on the ICM550 line up with the plastic standoffs on the enclosure.

6. The ICM CONTROLS ICM550 is correctly placed in channels with screw holes secured using the four plastic standoffs of the enclosure.

7. Firmly press the board down with thumbs on both sides.

8. Replace the cover by aligning the top of the cover into the channel then press the bottom of the cover down firmly until it snaps into place.

The tightening torque is 15 in-lb.