3 Preparation for operation
3.1 Pump bearings
1.
Model 3405 pump bearings are grease lubricated and sufficient lubricant is inserted at the factory
for 2000 hours of operation.
2.
Model 3406 pump bearings are ring oil lubricated, and are not lubricated before leaving the facto-
ry.
3.
Model 3416 pump bearings are flood oil lubricated and are not lubricated before leaving the fac-
tory.
A high quality turbine type oil, with rust and oxidation inhibitors, should be used. For the great
majority of operation conditions, oil temperature will run between 50 and 180°F. In this range an
oil of 300 SSU viscosity at 100°F. (approximately SAE 20) should be used.
If oil temperature exceeds 180°F. (Models 3405 and 3406) or 250°F. (Model 3416) for extended
periods of time, use of cooling water as outlined in
3.5 Connection of piping to quenching gland
and
3.2 Driver bearings and coupling on page 21
and/or use of a special high tem-
perature oil should be considered. For extreme conditions, refer to factory or a lubrication expert
for a recommendation.
The constant level oilers are found in the box of fittings which accompany the pump. Oiler manu-
facturer's instructions accompany the oiler. Set as illustrated below.
Figure 8: Oiler
On the Model 3406 install the constant level oilers in the bearing housing at each end of the
pump. The oiler piping must rest on top of the cap screw which projects from the casing. This
screw keeps the oiler piping level. (See
3 Preparation for operation
20
3405-3406-3416 Installation, Operation and Maintenance Instructions
