5.3 Check the rotation
WARNING:
•
Starting the pump in reverse rotation can result in the contact of metal parts, heat genera-
tion, and breach of containment. Ensure correct driver settings prior to starting any pump.
•
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 installa-
tion 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.
1.
Lock out power to the driver.
2.
Make sure that the coupling hubs are fastened securely to the shafts.
3.
Make sure that the coupling spacer is removed.
The pump ships with the coupling spacer removed.
4.
Unlock power to the driver.
5.
Make sure that everyone is clear, and then jog the driver long enough to determine that the direc-
tion of rotation corresponds to the arrow on the bearing housing or close-coupled frame.
6.
Lock out power to the driver.
5.4 Impeller-clearance check
The impeller-clearance check ensures the following:
•
The pump turns freely.
•
The pump operates at optimal efficiency for long equipment life and low energy consumption.
5.4.1 Impeller clearances (CV 3196)
NOTICE:
Set the cold (ambient) impeller clearance according to this table. Failure to do so may result in
heat generation and equipment damage. Higher clearances are used above 93°C | 200°F to
prevent the impeller from contacting the casing due to thermal expansion.
Table 9: CV 3196 impeller clearances
The CV 3196 requires the impeller clearances in the following table. CV 3196 impeller clearance is set off the
seal chamber face.
Service temperature
STi, MTi, LTi, XLT-i
mm | in.
-29 to 204°C | -20 to 400°F 1.52 | 0.06
5.5 Impeller-clearance setting
Importance of a proper impeller clearance
A proper impeller clearance ensures that the pump runs at high performance.
5.3 Check the rotation
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Model CV 3196 i-FRAME Installation, Operation, and Maintenance Manual
