Goulds Pumps VIT - IOM - Manual (Page 37)

1
2
1. Back-up rings
2. Bypass to suction
Install the dual mechanical seals
Dual seals are cartridge seals that are shipped assembled. This procedure only applies if a non-cartridge-
type seal is furnished, and there are no instructions provided by the seal manufacturer.
1. Scribe a mark on the shaft or sleeve that is flush with the face of the seal housing.
Use this reference mark to set the seal to the seal assembly.
2. Install the inner insert face:
a) Lubricate the stuffing-box bore and OD of the inner (or lower) stationary insert.
b) Protect the inner insert face with a soft and clean material, such as gasketing or sheet rubber.
c) Install the inner insert face into the bottom of the seal housing with hand pressure only.
d) If the insert includes a holding pin, make sure that the pin is aligned with the slot or hole in the
bottom of the seal housing.
3. Carefully place the gland ring and outer stationary insert over the shaft.
4. Lubricate the shaft or sleeve before you install any of the rotary unit parts.
5. Install the seal collar, or collars, on the shaft or sleeve:
a) Locate the collar so that it aligns with the reference mark you created in step 1 and to the setting
dimension given on the seal assembly drawing.
b) Tighten the setscrews to lock the collar to the shaft or sleeve.
6. Install the remaining rotary unit parts on the shaft or sleeve in the proper sequence and complete the
assembly of equipment.
7. If it is provided, install the shaft packing on the shaft or sleeve individually.
Use care to avoid nicks or damage that can cause the seal to leak.
8. Seat the gland ring and gland gasket against the face of the seal housing:
a) Tighten the nuts or bolts evenly and firmly.
b) Make sure that the gland ring is not cocked.
Installation (Continued)
Model VIT Installation, Operation, and Maintenance 35