OMM-23-1009-page 7
IV. INITIAL UNIT STARTUP
A. Pre-Startup & Post-Startup Checks: (Check blocks as each step is completed. Retain this for your records.)
A1. Pre-Startup Checks Completed By: ___________________________________
DATE: ___________________
A2. 8 Hour, Post-Startup Checks Completed By: _______________________
DATE: ___________________
A3. 3 Day, Post-Startup Checks Completed By: _____________________
DATE: ___________________
MAKE SURE POWER TO THE MOTOR IS LOCKED OUT BEFORE STARTING PRE-STARTUP OR POST-STARTUP CHECKS.
1.
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If possible,
CAREFULLY
spin either blower wheel by hand to ensure it rotates freely and no rubbing or clicking noise
is heard.
2.
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Check all blower, foundation and duct work hardware to make sure it is tight.
3.
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Check all blower wheel set screws to make sure they are tight per
Table 1
on page 5.
4.
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If the wheels have a taper-lock bushing, make sure the bolts are tightened per
Table 2
on page 5.
5.
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Make certain there is no foreign material in the blower or duct work that can become a projectile.
6.
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Make sure any inspection doors in the duct work are securely bolted or locked.
7.
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Ensure all electrical power components are properly sized and matched for your electrical system.
8.
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Check that all required guards are properly secured.
9.
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Any dampers should be fully opened and closed to make sure there is no binding or interference.
10.
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If your blower is mounted on an elevated support structure, make sure the structure is welded at all the joint connec-
tions and the structure is properly braced to prevent “side sway”.
11.
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Close any dampers to minimize load on motor. Especially on blowers with high temperature construction.
Never
sub-
ject a “cold” blower to a “hot” gas stream. If the blower will be handling “hot gases” greater than 150°F (65°C) it is
imperative that the blower be subjected to a gradual rate of temperature increase, not to exceed 15°F/minute
(8°C/minute). The same temperature limits are also important when the blower is experiencing a drop in temperature
until the temperature drops down to 150°F (65°C). Only, when the entire blower has reached an equilibrium tempera-
ture of 150°F (65°C), or less, should the power be turned off.
12.
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Make sure the power source connections to the blower motor are per the motor manufacturers instructions.
13.
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Make sure the blower wheels are stationary prior to startup.
Starting a blower with wheels that are rotating back-
wards can cause wheel damage.
14.
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Apply power to the blower motor momentarily (i.e. “bump start”) to check for proper blower wheel rotation. If the blow-
er is rotating in the wrong direction, reconnect the motor leads per the motor manufacturers wiring schematic.
Blower
rotation is determined by viewing the blower from the motor side of the blower, NOT from the inlet side
. After
reconnecting the leads, repeat this step.
See Fig. 2 below.
NOTICE: Failure to complete and document all the following pre-startup and both post-startup
checks, listed in sections A (below) and B on page 8, could void all warranties.
15.
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Apply power to the blower motor and let it come up to full speed.
Turn off the power.
Look and listen for any unusual
noise or mechanical abnormality while the blower wheel is still spinning. If any are noticed, lock out the power, wait for
the blower wheel to come to a complete stop, locate the cause and correct it.
16.
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Unlock power and start the blower.
17.
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Measure, record and keep the following motor data for future reference and comparison:
(Single phase motors will only have L1 and L2 leads)
Amperage draw on each motor lead: L1 _______ L2 _______ L3 _______
(Running amps
SHOULD NOT
exceed the motor nameplate amps for the voltage being operated on)
Voltage coming to motor leads: L1_______ L2_______ L3_______
(Should be about the same input voltage on all leads)
Fig. 2
Clockwise
(CW) Rotation
Counter-Clockwise
(CCW) Rotation
