Maintenance
Model API 3171 Installation, Operation, and Maintenance Manual
40
Grease recommendations based on temperature
Most pumps use Sunoco 2EP grease. High temperature units that can pump fluids with a temperature
greater than 177°C | 350°F use Mobil SCH32.
This table shows which brand of grease to use when lubricating the pump.
Brand
When temperature of pumped
fluid is less than 177°C | 350°F
NLGI consistency 2
When temperature of pumped
fluid is greater than177°C |
350°F NLGI consistency 3
Mobil
Mobilux EP2
SCH32
Exxon
Unirex N2
Unirex N3
Sunoco
Mutipurpose 2EP
N/A
SKF
LGMT 2
LGMT 3
Regrease the thrust bearing
NOTICE:
Risk of equipment damage. Ensure that the grease container, the greasing device, and the
fittings are clean. Failure to do so can result in impurities entering the bearing housing while
regreasing the bearings.
1. Wipe dirt from the grease fittings.
2. Remove the two grease-relief plugs from the bottom of the frame.
3. Fill both of the grease cavities through the fittings with a recommended grease until the
fresh grease comes out of the relief holes.
4. Make sure that the frame seals are seated in the bearing housing.
If they are not, press them in place with the drains located at the bottom.
5. Reinstall the grease-relief plugs.
6. Wipe off any excess grease.
7. Recheck the alignment.
The bearing temperature usually rises after you regrease due to an excess supply of grease.
Temperatures return to normal in about two to four operating hours as the pump runs and
purges the excess grease from the bearings.
Steady bearings
Check the ID of the casing collar (155) and steady bearing (197) per the dimensions in the
Bearing fits and tolerances table. If the ID is greater than what is allowed, remove the snap ring
(369) and use a suitable hydraulic press in order to remove these items for replacement. If
sealed bearings are provided, then you must also remove the lip seals (333H).
The bearing ID is slightly larger before you press it into the housing in order to allow for ID
shrinkage after you press it in place.
Shaft-seal maintenance
Mechanical-seal maintenance
WARNING:
The mechanical seal used in an Ex-classified environment must be properly certified.
CAUTION:
Running a mechanical seal dry, even for a few seconds, can cause seal failure and physical
injury. Never operate the pump without liquid supplied to the mechanical seal.
Cartridge-type mechanical seals
Cartridge-type mechanical seals are commonly used. Cartridge seals are preset by the seal
manufacturer and require no field settings. Cartridge seals installed by the user require
Содержание Goulds Pumps API 3171
Страница 1: ...Installation Operation and Maintenance Manual Model API 3171 ...
Страница 2: ......
Страница 63: ......