NOTICE:
Proper alignment is the responsibility of the installer and user of the unit.
Trouble free operation can be accomplished by following these procedures.
Initial Alignment (Cold Alignment)
•
Before Grouting Sub-base -
To ensure alignment can be attained.
After Grouting Sub-base -
To
ensure no changes have occurred during the mounting process.
•
After Spring Setting –
To ensure no changes have occurred during the leveling process.
After Connecting Piping -
To ensure pipe strains have not altered alignment. If changes have occurred,
alter piping to remove pipe strains on pump flanges.
•
Final Alignment (Hot Alignment)
•
After First Run - To obtain correct alignment when both pump and driver are at operating tem-
perature. Thereafter, alignment should be checked periodically in accordance with plant oper-
ating procedures.
NOTICE:
Alignment check must be made if process temperature changes, piping changes, and or pump
service is performed.
4.4.1 V-Belt Drive (Sheaves)
Well designed and properly installed V-belt drives are capable of running for years. AF pumps come in
several different belt drive configurations i.e. side by side, overhead, underslung or “Z” mount. Installation
and alignment procedures are similar for all configurations. Remove the guard or guards by referring to
the assembly/disassembly instructions. There are a few items that should be checked during installation
and alignment.
Sheave Alignment -
Alignment must be maintained for full power transmission, minimum vibration, and
long drive life. A dial indicator can be used to check runout on the periphery and face of each sheave. A
straight edge can be used to check parallel and angular alignment of the pump and drive sheaves, see
Figure:
Sheave alignment
.
Table 4: Sheave alignment
1. Parallel misalignment
2. Angular misalignment
3. Perfect alignment
1.
Belt Installation -
When installing new belts, shorten center distance between sheaves so that
belts can be placed on the sheave without the use of force. Never 'roll' or "Pry" the belts into
place, as this could damage the belt cords.
4.4 Drive Alignment Procedures
Model AF (42"/1200mm/54"/60"/66") LM/LMR Bearings Installation, Operation, and Maintenance Manual
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