ITT Goulds Pumps XHD, Инструкция по установке, эксплуатации и обслуживанию

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Commissioning, Startup, Operation, and Shutdown
XHD Installation, Operation, and Maintenance Manual 49
4. Turn the two adjusting nuts (415A) on the forward sides of the bearing frame adjustment
plates (234F) sequentially clockwise, 1/2 of a turn each at a time, to draw the power end
forward until the impeller (101) contacts the Suction Liner (562).
5. Turn the shaft (122) clockwise while performing step 4 above to ensure that there is contact
between the impeller (101) and Suction Liner (562). Stop turning the forward adjusting nuts
when a firm drag is encountered.
6. Place the dial indicator so that the button contacts either the shaft end, face of the coupling,
or face of the sheave bushing or the face of the bearing end cover. Zero the indicator.
7. Turn the two adjusting nuts (415A) on the rear sides of the bearing frame adjustment plates
(234F) sequentially counterclockwise, 1/2 of a turn each at a time, to draw the power end
and impeller (101) backward until there is an approximate 0.02 inch (.50 mm) gap between
the impeller (101) and suction liner (562) as measured on the dial indicator.
8. Tighten the adjustment plate hold-down bolts (352G) and nuts (427D) that clamp the
bearing frame adjustment plates (234F) to the pedestal (131). Make sure that the dial
indicator reading remains at the proper setting.
9. Tighten the two adjusting nuts (415A) on the rearward side of the bearing frame adjustment
plates (234F) that were loosened in step 5 above by turning them clockwise. Make sure
that the dial indicator reading remains at the proper setting.
NOTICE: It is critical that adjustment plate hold down bolts (352G) and nuts (427D) are
properly torqued to prevent the power frame from moving during operation.
10. Replace the coupling or v-belt guard.
Suction seal ring clearance check - XHD only
WARNING:
Failure to disconnect and lock out driver power may result in serious physical injury or death.
Always disconnect and lock out power to the driver before performing any installation or
maintenance tasks.
• Electrical connections must be made by certified electricians in compliance with all
international, national, state, and local rules.
• Refer to driver/coupling/gear manufacturer's installation and operation manuals (IOM) for
specific instructions and recommendations.
In addition to checking the impeller clearance, the suction seal ring clearance on the XHD
model must also be checked according to the following instructions for optimal efficiency and
wear.
All of the instructions that are stated in the following steps are based on viewing the unit from
the rearward (drive) end.
1. Loosen the three seal ring jam nuts (357B) by turning them counterclockwise.
2. Turn the three square head adjusting bolts (356F) sequentially clockwise, 1/3 of a turn each
at a time, until the seal ring (822) contacts the impeller (101).
3. Turn the shaft (122) clockwise while performing step 2 above to ensure there is contact
between the seal ring (822) and impeller (101). Stop turning the square head adjusting
bolts when a firm drag is encountered.
4. Turn the three square head adjusting bolts (356F) sequentially counterclockwise, 1/3 of a
turn each at a time, while measuring the gap between the impeller (101) and seal ring (822)
using a set of feeler gauges inserted in the suction of the pump.
5. Continue adjusting the square head adjusting bolts as outlined in step 3 above until there is
the appropriate gap from table 7 between the suction seal ring (822) and the impeller (101).
The gap is properly established when a appropriate feeler gauge fits snugly into the space
between the impeller (101) and seal ring (822).
6. Lock the square head adjusting bolts (356F) in place by turning the jam nuts (357B)
clockwise until tightened against the suction half casing (100A).