Manual

caused by operating in surge is not covered by
Spencer warranty.
A blower In surge produces a rush or pulsating
rhythmic air sound caused when airflow into or out of
the blower is restricted. In addition to its
characteristic noise, surge may be detected by
power or pressure fluctuations. Surge is destructive
be cause it is ac c ompani ed by exce ss ive
temperatures and aerodynamic forces that will
ultimately cause mechanical failure. A surge
condition is simply eliminated by increasing the
airflow either into the system or to a bypass or vent.
NOTE: If a blower surges violently at startup, avoid
recurrences by leaving the throttling valve open at or
near its normal operating position.
II. Operation and
Adjustments
Startup Precautions
Before operating a new blower for the first lime,
review its installation and setup to be sure that no
steps have been overlooked.
1. Installation Check List
• Is there any damage from transportation or
installation?
• Isthemachinelevel?
• Have all packing, shipping materials and tools
been removed?
• Istheinletfilterinplace?
• Areisolationpadsinplace?
• Isthepipingconnectedandsupported?
• Are flexible connectors in place between blower
and piping?
• Aresafetyguardsinplace?
2. Adjustment Checks
• Is the coupling aligned within tolerances and
lubricated?
3. Operational Checks
• Is the throttling valve closed or properly
positioned?
• Dotheblowershaftanddriverspinfreely?
• Istheisolationvalve(ifany)open?
• Isthesystemreadyforairorgasdelivery?
• Hasmotorrotationbeenchecked?
• Are motor and electrical accessories properly
wired?
5
Coupling Alignment with Sleeve Bearing Motors
Caution: Complete the following procedures
before attempting coupling alignment with sleeve
bearing motors.
Use a flange-type gear coupling for both 1800 and
2600 RPM motors. Do not use a sleeve-type
coupling.
Sleeve bearing motors have a specified end play.
End play limits and the magnetic center (where
motor will run) should be scribed on the shaft by the
manufacturer.
Use the following procedure to align a sleeve bearing
motor with a blower.
1. Make sure the motor shaft is level.
2. Position the motor so that when the rotor is
pushed toward the blower as far as it will go, there
will 0.030" clearance between the ends of the
motor and blower shafts (or the alignment faces
on the coupling hubs).
3. Proceed with coupling alignment using the
appropriate instructions.
Alignment Tips
• Makesuretheblowerislevelbeforealignment.
• Mark the axial location of the motor before
alignment as a reference point to be sure it does
not move.
• Avoiddisturbinganyfactory-installedshimsunless
they are to be replaced.
• Do soft foot correctionsfirst;loosen all mounting
bolts before correcting any foot.
• During the final vertical adjustment of the motor,
work on one side at a time, loosening the jack
bolts first so the motor does not move laterally as
mounting bolts are loosened.
• Use the smallest shim that will slide over the
mounting bolts.
• Minimize the number of shims. One thick shim
and 2-3 thin shims are usually satisfactory.
• Remove all traces of dirt or contaminants from
shims and machine parts.
• Usestainlesssteelshimsonly.
• Neverreuseshims.
Caution: After each alignment check, add
coupling lubricant If required.
WARNING: REPLACE THE COUPLING GUARD
BEFORE RESTARTING THE BLOWER.
Surge
Caution: Do not operate blower In surge
(unstable low flow range). Damage to blower
The Spencer Turbine Company ◆ 600 Day Hill Road, Windsor, CT 06095 ◆ TEL [phone] ◆ 860-688-8361 ◆ www.spencerturbine.com