![background image](http://html1.mh-extra.com/html/gardner-denver/pureair-ewc99c/pureair-ewc99c_operating-and-service-manual_3860178016.webp)
13-11-607 Page 11
MOTOR LUBRICATION
- Long time satisfactory operation of an electric motor depends in large
measure on proper lubrication of the bearings. The charts below 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, tag and lockout 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.
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.
WARNING
Rotating machinery can cause injury or death. Open main disconnect, tag and
lockout power supply to the starter before working on the electric motor.
ELECTRIC MOTOR GREASE RECOMMENDATION (-30
°
C TO 50
°
C)
Manufacturer
Trade Name
Chevron
SRI #2
Shell
Dolium R
Exxon
Unirex #2
Exxon
Polyrex
Figure 2-4 – GREASE RECOMMENDATIONS
ELECTRIC MOTOR REGREASING INTERVAL
Type of Service
Typical Examples
Rating
Relubrication Interval
Up to 150 HP (112 kW)
18 Months
Standard
One or Two-Shift Operation
Above 150 HP (112 kW)
12 Months
Up to 150 HP (112 kW)
9 Months
Severe
Continuous Operation
Above 150 HP (112 kW)
6 Months
Up to 150 HP (112 kW)
4 Months
Very Severe
Dirty Locations, High Ambient
Temperature
Above 150 HP (112 kW)
2 Months
Figure 2-5 – REGREASING INTERVAL
Summary of Contents for PUREAIR EWC99C
Page 7: ...13 11 607 Page 2 Figure 1 2 PACKAGE ILLUSTRATION 307EWC797 B Ref Drawing...
Page 8: ...13 11 607 Page 3 Figure 1 3 AIR WATER SCHEMATIC 308EWC797 F Ref Drawing...
Page 25: ...13 11 607 Page 20 Figure 4 2 FLOW CHART FOR SETUP PROGRAMMING 300EWC1255 Ref Drawing...
Page 38: ...13 11 607 Page 33 Figure 4 4 WIRING DIAGRAM FULL VOLTAGE 305EWC546 B Ref Drawing Page 1 of 2...
Page 39: ...13 11 607 Page 34 305EWC546 B Ref Drawing Page 2 of 2...
Page 41: ...13 11 607 Page 36 306EWC546 B Ref Drawing Page 2 of 2...