Service temperature
STi
MTi/LTi
XLT-i
in. (mm)
in. (mm)
in. (mm)
Up to 650°F (343°C)
0.016 (0.40)
0.019 (0.48)
0.026 (0.66)
Up to 700°F (371°C)
0.017 (0.43)
0.020 (0.50)
0.027 (0.69)
Impeller-clearance setting
Importance of a proper impeller clearance
A proper impeller clearance ensures that the pump runs at high performance.
WARNING:
• The impeller clearance setting procedure must be followed. Improperly setting the clearance or not
following any of the proper procedures can result in sparks, unexpected heat generation, and
equipment damage.
• If you use a cartridge mechanical seal, you must install the centering clips and loosen the set screws
before you set the impeller clearance. Failure to do so could result in sparks, heat generation, and
mechanical seal damage.
Impeller clearance methods
You can set the impeller clearance with either of these methods:
• Dial indicator method
• Feeler gauge method
Set the impeller clearance - dial indicator method (all except CV 3196)
WARNING:
Always disconnect and lock out power to the driver before you perform any installation or maintenance
tasks. Failure to disconnect and lock out driver power will result in serious physical injury.
1. Remove the coupling guard.
2. Set the indicator so that the button contacts either the shaft end or the face of the coupling.
228
134A
423
370C
370D
3. Loosen the jam nuts (423) on the jack bolts (370D) , and then back the bolts out about two turns.
4. Tighten the locking bolts evenly (370C), bringing the bearing housing (134A) towards the frame (228)
until the impeller contacts the casing.
Commissioning, Startup, Operation, and Shutdown
44
Model HT 3196 i-FRAME Installation, Operation, and Maintenance Manual
Содержание HT 3196 i-FRAME
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