Product Description
50
TT Twin-Screw Pump -
Installation, Operation & Maintenance Manual
Check that the oil level is correct. The correct oil level is at the center of the sight glass, when
the pump is stopped. During operation the sight glass gives a false oil level reading.
Find the grease nipple in drive end cover sides. Refer to the GA or outline drawing for
location.
Fill each side using grease gun.
Lubricate the gear/bearings after a shutdown period
1. Fill each housing with the proper lubricating oil & grease to ensure quality after cleaning.
Shaft sealing with a mechanical seal
Precautions
WARNING:
The mechanical seal used in an EX- classified environment must be properly certified.
for the conditions of service.
CAUTION:
Running a mechanical seal dry even momentarily can cause seal failure and physical
injury. Never operate the pump without a reliable supply of liquid to the mechanical seal.
The mechanical seal must have an appropriate seal-flush system. 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
Sealing systems that are not self-purging or self-venting, such as plan 23, require manual
venting prior to operation. Failure to do so will result in excess heat generation and seal
failure. Follow seal manufacturer's guidelines for proper seal installation procedures.
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 CIRCOR, 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.
Seal lubrication is required
Seal faces must have liquid film between them for proper lubrication. If customer supplied
sources of liquid must be supplied to the mechanical seal, the pump GA or outline drawings
Summary of Contents for HOUTTUIN TT Twin-Screw
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