Price AW-I Series, Руководство по установке

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Proper fan belt tension
Belt Span
Deflection = Belt Span
64
Supply Fan Start-Up
HAZARDOUS ROTATING EQUIPMENT: Contact with the rotating
fan, belts or motor can lead to death or severe injury.
Follow proper lockout/tagout procedures to ensure the
power cannot be inadvertently energized.
Once the power has been checked, the fan rotation needs to
be checked as follows:
1. With the main gas valve and firing valve closed, turn on the
disconnect.
2. Select “off” for the system switch.
3. Depress the supply fan contactor manually for a moment
to “bump” the fan. Check the fan rotation. There is
typically an arrow on the fan housing to indicate rotation
direction.
4. If the fan rotation is not correct, shut down the unit and
turn off the power. Switch any two of the power leads at
the load side of the disconnect.
5. Check the fan motor amp draw and compare it to the
name pate rating. If amp draw is too high, correct the air
flow and/or duct static pressure drop to reduce amp draw.
If the fan speed is adjusted, make sure not to exceed the
maximum fan speed rating.
6. The fan thermal overloads must be set to the appropriate
motor performance after all adjustments have been made.
Sheave Alignment and Belt Tension
1. Confirm that the fan and motor shafts are parallel. If not,
make adjustments.
2. Confirm that the fan and motor sheave grooves are
coincident. If not, make adjustments.
3. Confirm all setscrews are tight.
Belt Tensioning
On units with belt drive fans:
1. Check belt tension. The correct tension is the lowest
possible without belt slippage.
2. Check belt tension frequently during the first two days.
3. Avoid foreign materials such as oil on the belts.
SUMMER - WINTER SWITCH
SHEAVE ALIGNMENT AND BELT TENSION
Proper alignment of motor and drive shaft
Wrong
Correct Wrong Wrong
WARNING
20
AW-I
INSTALLATION INSTRUCTIONS
AW-I - Manual | priceindustries.com