If the pump performance does not satisfy your process requirements, and the process requirements
have not changed, then perform these steps:
1.
Disassemble the pump.
2.
Inspect it.
3.
Replace worn parts.
6.2 Bearing maintenance
These bearing lubrication sections list different temperatures of pumped fluid. If your pump is ATEX
certified and the pumped fluid exceeds the permitted temperature values, then consult your ITT repre-
sentative.
Bearing lubrication schedule
Type of bearing
First lubrication
Lubrication intervals
Oil-lubricated bearings
Add oil before you install and start the
pump.
Change the oil after 200-300 hours of oper-
ation, depending on bearing temperature.
See the Oil change schedule table.
Grease-lubricated bear-
ings
N/A
Every 4000 hours of operation or once a year,
whichever comes first
Every two years if the pump is left idle
Oil change schedule
Oil must be changed at least once a year.
Bearing temperature
First oil change
Subsequent oil changes
Up to 60°C | 140°F
After 300 hours of operation Every 8760 hours of operation
60°C to 80°C | 140°F to 176°F After 300 hours of operation Every 4000 hours of operation
80°C to 100°C | 176°F to 212°F After 200 hours of operation Every 3000 hours of operation
NOTICE:
•
Strictly maintain the oil changing schedule if the pump is operating in an potentially explo-
sive environment.
•
Change the oil every two years if the pump is left idle.
•
Dispose of used oil in accordance with local environmental regulations.
6.2.1 Lubricating oil requirements
Oil quality requirements
Use a high-quality turbine oil with rust and oxidation inhibitors.
Lubricating oil type
•
CLP46
•
DIN 51517
•
HD 20W/20 SAE
Symbol
DIN 51502
Kinematic viscosity at 40°C | 104°F
46 ±4 mm
2
/sec |
0.0713 ±0.006 in.
2
/sec
6.2 Bearing maintenance
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