ITT GOULDS PUMPS i-FRAME 3620, Инструкция по установке, эксплуатации и обслуживанию

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NOTICE:
Do not set the mechanical seal sleeve set screws at the time; endplay must be checked first or
damage to the seal faces could occur.
2. Assemble the inboard labyrinth seal (333A) into the inboard thrust end cover (160):
a) Clean the end cover with a solvent.
b) Fit the labyrinth seal (333A) into the bore of the cover (160).
c) Tap the seal in with a hammer.
NOTICE:
Make sure that the expulsion port is at the 6 o'clock position and is properly seated.
3. Assemble the inboard end cover (160) and the inboard bearing end-cover gasket (360A) onto the
shaft.
4. Assemble the thrust bearings (112A) in a back-to-back arrangement onto the shaft (122):
The bearings are interference fit.
a) Preheat the bearings to 120°C | 250°F with an induction-type bearing heater.
Be sure to also demagnetize the bearings after heating.
CAUTION:
• Risk of physical injury from hot bearings. Wear insulated gloves when using a bearing
heater.
NOTICE:
Do not use a torch and do not force.
b) Install the bearing spacer (443V) if applicable, bearings (112A), the oil ring sleeve (443B), and
the bearing locknut (136) onto the shaft.
c) While the bearings are hot, tighten the locknut by hand with a spanner wrench until the bearing
is snug against the shaft shoulder.
d) Allow the bearing assembly to cool slowly to room temperature.
Do not rapidly cool the bearings with compressed air or other means.
e) When the bearing assembly is fully cooled, remove the locknut, install the lockwasher (382),
and install the locknut.
f) Hand-tighten the locknut with a spanner wrench. Do not over-tighten the bearing. Tap the end
of the spanner wrench with light strikes from a dead blow hammer while you note the location
of the next available lockwasher tab that aligns with the slots in the locknut.
The turning resistance of the nut increases as it tightens. Plan the alignment of the lockwasher tab
with the locknut fully tightened. If the locknut is still turning with light strikes with the hammer, then
continue to tighten the locknut until the next available tab is aligned with a slot. Do not use heavy
strikes with the hammer. If it is not possible to reach the next tab, then loosen the locknut to align
with the previous tab.
g) Check the condition of the outer races by rotating the bearings by hand in opposite directions:
• The outer races generally cannot be counter-rotated by hand, but if they do move, the resist-
ance must be high.
• If the outer races are loose, the bearing is not properly seated and must be retightened.
6.6 Reassembly
3620 i-FRAME API type BB2 single stage / ISO 13709 2nd Ed/API 11th Ed Installation, Operation, and Maintenance
Manual 97