GE Industrial Solutions PowerVac PV-VL 13.8-1000-0 and -1 - Manual (Page 67)

GEH 6468A - Power/Vac VL Breaker Page 67
Before replacing the breaker, apply a thin coat of
0282A2048P009 lubricant, to the breaker studs for
lubrication.
5. Check tightness and continuity of all control
connections and wiring.
6. If the equipment is equipped with heaters,
check to see that all heaters are energized and
operating.