Flowserve MSS Series - Manual (Page 11)

11
3.17 Mount the seal drive halves 2 around the shaft and loosely fasten
them together with the shoulder screws 414 provided. Line up the
pins in the seal drive with the holes in the rotating face and slide the
seal drive towards the rotating face until a 3 mm (0.12 inch) spring
gap is achieved using the two 1/8" Allen wrenches as spacers.
Tighten the shoulder screws completely and lock seal drive to the
shaft.
On designs that incorporate set screws 57 in the seal drive, after
tightening shoulder screws 414 , tighten the set screws 57 to lock
the seal drive to the shaft.
The seal is now ready for operation. See Operational Recommendations
before start-up, paragraph 4.
For special problems encountered during installation, contact your nearest
Flowserve Sales and Service Representative or Authorized Distributor.
4 Operational Recommendations
The MSS seal is designed to run dry at speeds of up to 350 rpm. If
operated dry, no special environmental controls are necessary. For wet
operation of up to 1750 rpm, make sure that the seal water flush, Plan 32,
is adequate to remove seal-generated heat and that the flush is on
before start-up of the equipment. Contact your nearest Flowserve Sales
and Service Representative or Authorized Distributor for seal flush
requirements.
5 Repair
This product is a precision sealing device. The design and dimension
tolerances are critical to seal performance. Only parts supplied by
Flowserve should be used to repair a seal. To order replacement parts,
refer to the part code and B/M number. A spare backup seal should be
stocked to reduce repair time.
When seals are returned to Flowserve for repair, decontaminate the
seal assembly and include an order marked "Repair or Replace." A
signed certificate of decontamination must be attached. A Material
Safety Data Sheet (MSDS) must be enclosed for any product that
came in contact with the seal. The seal assembly will be inspected and, if
repairable, it will be rebuilt, tested, and returned.