RO/ROH 3x2
16
2.7. Cautions
The following precautions are recommended to insure continued satisfactory
operation of unit after reassemble.
2.7.1. Do not re-use o-rings on components during reassembly as they lose their seal
integrity and may leak.
2.7.2.
When replacing pick up tube, always replace pick up tube capscrews to avoid
attachment complications.
2.7.3.
Never re-use bearing locknuts when replacing bearings as they lose their positive
locking capability when removed.
2.7.4.
During rotor cover removal mark location of cover on rotor and location of each
capscrew so that they can be assembled in same location. Failure to do this may
create an out of balance condition making pump susceptible to vibration damage.
2.7.5.
Replacement of major rotating component such as rotor or cover will require
rebalancing of rotating assembly.
2.7.6. Be sure all parts are free of dirt, stray metal chips or any foreign matter and have
been thoroughly cleaned.
2.7.7. All torque values given assume lubrication with an anti-seize agent to threads and
underside of bolt heads.
2.7.8.
WARNING:
When lifting the pump into the vertical position with or without the use of
the assembly stand a swivel hoist ring shall be used in place of the lifting eye.
Reference APPENDIX A Drawing.
2.8. Seal Replacement
WARNING:
Before lifting the pump into the vertical position first remove the
lifting eye and install the swivel hoist. When tightening the swivel hoist ring,
torque to 100ft-lbs. Once the pump is re-assembled and in the horizontal
position remove the swivel hoist and re-install the lifting eye. Reference
APPENDIX A Drawing.
2.8.1. Instructions - General
2.8.1.1. Lock out and tag drive.
2.8.1.2. Remove drive connection to pump (belts or flexible coupling).
2.8.1.3. Remove inlet and discharge lines from manifold. Remove seal flush
lines and drainage piping if applicable.
