5
SECTION V
MAINTENANCE
1. There should be no mechanical seal leakage except for a brief break in period. Mechanical seals should
be replaced if they are leaking
3. Refer to the motor manufacturer’s instructions for periodic maintenance requirements.
4. Check that electrical control equipment contacts are in good condition and clean.
5. Bearing relubrication requirements – refer to the table “Pump Bearing Relubrication
Requirements”. . Do not overlubricate the bearings.. Such action will cause bearings to overheat.
6. Refer to the “General Pump Inspection and Maintenance Schedule” for best results.
HSC Pump Bearing Relubrication Requirements
Bearing Group Number*
Pump Speed 1 2 3 4
1000 RPM 20,000 20,000 19,000 15,000
1200 RPM 19,000 18,000 15,000 12,000
1500 RPM 15,000 14,000 12,000 9,000
1800 RPM 12,500 11,000 9,000 7,000
3000 RPM 7,500 6,500 5,000 3,500
Relubrication
Interval***
(Operating Hours)
3600 RPM 5,000 5,000 4,000 2,000
Ounces (cc) ¼ (8) ¼ (8) 3/8 (11) 3/8 (11)
Relubrication
Amount of Grease Number of
Strokes** 8 8 12 12
* The bearing group for a pump is the suffix in the model designation. For example, model S8A12A-3 uses
bearing group 3.
** These values are for a typical grease gun having a capacity of 1 ounce (30 cc) of grease per 30 strokes.
IMPORTANT - The number of strokes should be adjusted according to the actual grease gun used.
*** These relubrication intervals are based on bearing temperatures up to 150 degrees F (65 degrees C),
measured on the bearing housing. The intervals should be halved for every increase in temperature of 25
degrees F (15 degrees C), above 150 degrees F (65 degrees C), to allow for more frequent relubrication, but the
maximum operating temperature for the grease used must not be exceeded. The bearings must also be
relubricated more frequently when there is a risk of becoming contaminated, such as a dirty, dusty, or wet
environment.
Relubrication procedure:
1) Clean grease fitting and outside of bearing housing.
2) Remove drain plug.
3) Inject grease according to the table above.
4) Start and run the pump for a short time to allow any excess grease to purge.
5) Wipe off any excess grease that may have purged and replace drain plug.
