Bearing Maintenance; Mechanical-Seal Maintenance - Goulds Pumps 3700 Installation, Operation And Maintenance Manual

2. Inspect it.
3. Replace worn parts.

Bearing maintenance

These bearing lubrication sections list different temperatures of the pumped fluid. If the
pump is ATEX-certified and the temperature of the pumped fluid exceeds the permitted
temperature values, then consult your ITT representative.
Bearing lubrication schedule
Type of bearing
Oil-lubricated bearings

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.
NOTICE:
•
manual venting prior to operation. Failure to do so will result in excess heat generation and
seal failure.
• Cooling systems, such as those for bearing lubrication and mechanical-seal systems, must
be operating properly to prevent excess heat generation, sparks, and premature failure.
•
generation and seal failure can occur.
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
disengagement of the holding clips prior to operation, allowing the seal to slide into place. If the
seal has been installed in the pump by ITT, these clips have already been disengaged.
Other mechanical seal types
For other types of mechanical seals, refer to the instructions provided by the seal manufacturer
for installation and setting.
Before you start the pump
Check the seal and all flush piping.
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
First lubrication
Add oil before you install and start
the pump. Change the oil after
200 hours for new bearings.
Sealing systems that are not self-purging or self-venting, such as plan 23, require
The mechanical seal must have an appropriate seal flush system or excess heat
Maintenance
Lubrication intervals
After the first 200 hours, change
the oil every 2000 operating hours
or every three months.
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