Marstair A2LSYSTEMATCH SMC 15 Technical Manual page 35

3H2 Changing Defrost Heaters
•
Electric defrost heaters come in two configurations. One is for light ice formation between 0º C and 5º
C temperatures and the other one is for heavy ice formation below 0º C temperatures.
•
Before anything is done make sure electric power is off
•
Open the terminal box.
•
Make sure that heating elements are not extremely hot.
•
Disassemble coil heating elements by removing retaining rings and change them with new
ones.
Disassembling coil resistances
Disassembling coil resistances
Changing drainage tray resistance
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