Gardner Denver L Series Original User And Service Manual page 63

Motor Lubrication
Long time satisfactory operation of an electric motor depends in large measure on proper lubrication of
the bearings. The following chart show recommended grease qualities and regreasing intervals for ball
bearing motors. For additional information refer to the motor manufacturer's instructions. The following
procedure should be used in regreasing:
1. Stop the unit.
2. Disconnect, lockout and tagout the unit from the power supply.
3. Remove the relief plug and free hole of hardened grease.
4. Wipe lubrication fitting clean and add grease with a hand-operated grease gun. Only enough grease
should be added to replace the grease used by the bearing. Too much grease can be as harmful as
insufficient grease. The grease cavity should be about 1/2 full.
5. Leave the relief plug temporarily off. Reconnect the unit and run for about 20 minutes to expel the
excess grease.
6. Stop the unit. Replace the relief plug.
7. Restart the unit.
Electric Motor Regreasing Interval
Typical
Type of Service
Standard One or Two Shut Operation (Non-Continuous)
Continuous Operation
Severe
Very Severe Dirty Locations, High Ambient Temperature
Up to 150 HP
(112kW)
Above 150 HP
(112kW)
Up to 150 HP
(112kW)
Above 150 HP
(112kW)
Up to 150 HP
(112kW)
Above 150 HP
(112kW)
13-25-640 v00 Page 63
Rating
Relubrication Interval
18 Months
12 Months
9 Months
6 Months
4 Months
3 Months