Pump group
Instructions
4.
Using a spanner or strap wrench to tighten the sleeve nuts (124), ad-
justing the impeller to approximate center.
Do not tighten the setscrew. You will need to adjust the impeller
again when the rotating element is placed in the casing.
7.
Position the casing wear rings (103) on the impeller.
Make sure that the anti-rotation pins (445A) are seated firmly.
6.7.2 Assemble the rotating element
1.
Slide the stuffing box bushing (125) onto the shaft or sleeve.
Units with mechanical seals do not have a stuffing box bushing.
2.
If the unit is equipped with mechanical seals, then install the seals at this time.
Refer to the instructions provided by the seal manufacturer for details.
3.
Slide the deflectors (123), bearing end covers (109), and gaskets (360) onto the shaft.
6.7.3 Install the bearings
1.
Apply a thin film of machine oil to the bearing seats on the shaft.
2.
NOTICE:
There are several methods you can use to install bearings. The recommended method is to
use an induction heater that heats and demagnetizes the bearings. Bearings can get hot and
can cause physical injury.
Start the bearings (112 and 168) onto the shaft by tapping the inner race with a hammer or mallet.
Keep the bearing square at all times.
3.
After the bearing is started on shaft, use a driving sleeve in order to press or drive the bearing until
it contacts the shoulder on the inboard side of the seal.
Make sure that the sleeve contacts only one inner race.
4.
For the outboard (thrust) bearing, install a tapered bearing-retaining ring (361) in the retaining ring
groove on the outboard (thrust) end of the shaft (122).
5.
Slide the bearing housings (134) over the bearings.
6.
Tighten the screws (371C) in two stages:
a) Using an X pattern, tighten the screws to 8 ft-lbs (11 Nm).
b) Again, using an X pattern, tighten the screws to 12 ft-lbs (16.3 Nm).
c)
Repeat these steps on the opposite side.
6.7.4 Install the rotating element
NOTICE:
The impeller and wear-ring clearance setting procedures must be followed. Improp-
erly setting the clearance or not following any of the proper procedures can result in sparks,
unexpected heat generation, and equipment damage.
1.
Install the rotating element in the lower casing with a sling, adequate hoist, or lift.
6.7 Reassembly
70
Model 3410 Installation, Operation, and Maintenance Manual
Содержание GOULDS PUMPS 3410
Страница 1: ...Installation Operation and Maintenance Manual Model 3410 ...
Страница 2: ......
