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 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
First lubrication
Lubrication intervals
Oil-lubricated bearings
Add oil before you install and start the
pump. Change the oil after 200 hours
for new bearings.
After the first 200 hours, change the
oil every 2000 operating hours or ev-
ery three months.
Grease-lubricated bearings
Grease-lubricated bearings are initial-
ly lubricated at the factory.
Regrease bearings every 2000 oper-
ating hours or every three months.
6.2.1 Lubricating-oil requirements
Oil requirements based on temperature
For the majority of operating conditions, bearing temperatures run between 49°C | 120°F and 82°C | 180°F,
and you can use an oil of ISO viscosity grade 68 at 38°C | 100°F. If temperatures exceed 82°C | 180°F, refer to
the table for temperature requirements.
Temperature
Oil requirement
Bearing temperatures exceed 82°C |
180°F
Use ISO viscosity grade 100 with bearing-frame cooling or finned-tube oil
cooler. The finned-tube oil cooler is standard with the HT 3196 model and
optional for all other models.
Pumped-fluid temperatures exceed
177°C | 350°F
Use synthetic lubrication.
6.2.1.1 Oil volumes
Oil volume requirements
This table shows the required amount of oil for oil-lubricated bearings.
Frame
ml
Qts.
Oz.
STi
400
0.5
16
MTi
1400
1.5
47
LTi
1400
1.5
48
XLT-i and i17
3000
3
96
6.2 Bearing maintenance
72
Model CV 3196 i-FRAME Installation, Operation, and Maintenance Manual
