(MOV - Metal Oxide Varistor)
To protect the safety sensors and logic boards from electrical storms and power surges.
Use before a lightning strike, electric storm or power surge occurs. Will decrease that chances of power surge or lightning strike shorting the receiver logic board for Chamberlain Liftmaster machines.Wiring Instructions:
Note: - This product will not protect receiver logic board or safety sensors from nearby electric storms or lightning strikes, but from power surges caused by those elements.
- Attach MOV wires directly to motor unit terminals 2 & 3 (white & black) located on the receiver logic board. Note: Units with quick connect terminals, both bell wires must be twisted or connected together and reinserted using only one hole leaving the second hole for MOV wire.
- Route green ground wire to the chassis top. Attach wire to chassis with the self threading screw, using the existing hold as illustrated. Note: Screw drive units with side access dor, attach to the chassis hanging brackets with hardware provided.