/ Operation /

Deicing

If the temperature/water level sensor assembly becomes encased in ice the heaters will not operate. Ice provides inadequate conductivity for the sensor probe to detect operational water level. To operate heaters in this situation and melt the ice follow these procedures.

1.Disconnect power to the control panel using standard lockout proce- dures for safety.

2.Remove the panel cover.

3.Install a jumper wire between relay terminals G1 and G2—see

Figure 3.

Figure 3

 

 

 

 

JUMPER

SOLID STATE RELAY CARD

 

 

 

 

 

 

CT

 

 

G2

RED

 

 

BLK

120 N

 

 

T1 T2 G1

 

RED GREEN

RED

COM

BLK

24 240

NC NO

 

SH

SHIELD

 

 

 

 

 

 

 

 

PROBE

BASIN

Caution

4.Replace panel cover.

5.Energize the system and listen for contactor closing.

6.Operate the system until ice is melted around the sensor probe.

7.After ice is melted, de-energize the system, remove the jumper, check all connections and place the system back in operation.

Do not leave the heating system unattended during this procedure. There is no low water protection with this jumper in place.

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SPX Cooling Technologies 92-1322C user manual Deicing

92-1322C specifications

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