Flowserve CBR Series - Manual (Page 6)

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2.12 Position the gland to the face of the seal housing. Be sure the gland
pilot is properly engaged. Tighten the gland stud nuts evenly, cross
stagger the adjustment of the nuts. Excessive gland bolt tightening
can result in distortion of the stationary face.
2.13 See section 4, Operational Recommendations, before starting
pump.
3 Vertical Pumps
3.1 Follow the above installation instructions except that (a) the
reference mark A must be established with the shaft, impeller(s),
and coupling in their final running position and (b) the gland
assembly, Step 2.5, is installed after the bellows assembly is
installed, Step 2.10.
3.2 Any change in position of the shaft requires resetting of the seal.
3.3 Special attention must be taken to avoid trapping air in the seal
chamber. When the seal chamber pressure is below pump
discharge pressure, use Piping Plan 11, bypass line from pump
discharge to the gland flush tap to ensure sealing liquid at the seal
faces. When the seal chamber pressure is at pump discharge
pressure, use Piping Plan 13, bypass line from seal chamber to
pump suction.
3.4 See section 4, Operational Recommendations, before starting
pump.
4 Operational Recommendations
4.1 Do not start up the equipment dry. Vent air from the casing of the
pump and the seal chamber before startup. Circulate clean product
or a clean fluid from an external source through the seal chamber
whenever the equipment is in operation, Piping Plan 11.
4.2 If the seal runs hot, check for proper seal setting, seal housing
dimensions, and check the bypass or flush line for obstructions.
Shut down the equipment immediately if the seal gets hot.
For special problems encountered during installation, contact your
nearest Flowserve Sales and Service Representative.