Figure 7-24. - Push-button station with a pilot light.

Figure 7-25. - Control circuit with a pilot light.

Figure 7-26. - Pilot light indicates when motor is not running.

Before pumping grease into the grease fitting, wipe it clean to prevent the grease from carrying dirt into the fitting and bearing housing. Always remove the relief plug from the bottom of the bearing before using the grease gun. This action prevents applying excessive pressure, which could rupture the bearing seals inside the bearing housing.

With a clean screwdriver or similar tool, free the relief hole of any hardened grease so that any excess grease will run freely from the bearing. With the motor running, add grease with a hand-operated pressure gun until it begins to flow from the relief hole. This procedure tends to purge the housing of old grease.

WARNING

It might prove dangerous to lubricate the motor while it is running; follow the procedures with the motor at a standstill.

After adding the grease, allow the motor to run long enough to permit the rotating parts of the bearing to expel all excess grease from the housing. This very important step prevents overgreasing of the bearing. Stop the motor and tightly replace the relief plug with a wrench.

Motors that are not equipped with the pressure-gun fitting and the relief plug on the bearing housing cannot be greased by the procedures described. Under average operating conditions, the factory-packed grease in the bearing housings of these motors is sufficient to last approximately 1 year. When the first year of service has elapsed and once a year thereafter (or more often if conditions warrant), you should