BLACKMER IOM E Series, Инструкция по установке, эксплуатации и обслуживанию, Страница: 16 / 52

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ALIGNMENT OF PUMP/DRIVER SHAFTS
WARNING!
NOTE: Driver power must be locked out before beginning any alignment procedure. Failure to lock out driver power may result in
serious physical injury.
NOTE: Proper alignment is the responsibility of the installer and user of the equipment.
NOTE: Check alignment if process temperature changes, piping changes and/or pump service is performed.
Pump and driver shafts need to be aligned for both parallel and angular alignment. If there is a misalignment of the shafts, it will
place a mechanical load on the pump and driver shaft/bearing assemblies, as well as the coupling. This will result in vibration, noise
and premature failures.
PARALLEL MISALIGNMENT ANGULAR MISALIGNMENT
Furthermore, due to the magnetic coupling design of the E Series pump, misalignment can cause deflection of the outer ring into the
stationary magnet housing and containment canister. This can cause bearing failure which, if left undiagnosed, could lead to the
outer ring contacting and potentially breaching the containment canister.
NOTE: There are design provisions that cause the outer ring to contact the magnet housing prior to contacting the canister, but this
is meant for short-term bearing failure containment, not long-term prevention of outer ring-to-canister contact.
To bring shafts into alignment, we first need to determine the amount and direction of both parallel and angular misalignments. We
can then shim and reposition to correct.
It’s preferable to shim ONLY under the driver feet since good contact between the pump foot and the base is necessary to resist any
pump flange loading that might be imposed by the suction and/or discharge piping.
There are three methods commonly used to determine misalignment:
1. Straight edge and calipers or inside micrometer (least accurate)
2. Dial indicator (reasonably accurate)
3. Laser alignment equipment; see manufacturer’s instructions for use
Since any misalignment will impose loads on the pump and driver shafts, the objective is to minimize any misalignment in order to
protect the pump and driver, and minimize any tendency for vibration. Suggested misalignment limits are:
MISALIGNMENT LIMITS
PUMP FRAME GROUP MAX. PARALLEL MAX. ANGULAR
2/4, 24/32, 55/69, 82 0.005" 0.005"
133/222 0.010" 0.010"
For optimum performance and Mean Time Between Pump Maintenance (MTBPM), use alignment limits half of those shown above.
NOTE: In any case, disregard the coupling manufacturer’s published misalignment limits, as these will impose unacceptable loads
on the pump and motor shafts, and bearings.