Start-Up - Blower
2. Check the Blower Rotation
Refer to the
Pre Start-Up Check
Rotate the fan wheel by hand and make sure no parts are rubbing. Check the
Open the blower access door and run the blower momentarily to determine the rotation. Arrows are placed on the blower scroll to indicate the proper direction or reference the example shown to the right.
|
|
| n |
|
|
| io |
|
|
| t |
|
| a | |
R | o | t |
|
|
| ||
|
|
|
Blower
Housing
Blower Rotation
fan, bearings, drive, motor base, and accessories for tightness.
warning
Disconnect and
SPECIAL EQUIPMENT REQUIRED
Required and recommended tools. Equivalent products may be used.
Voltage & | Manufacturer: | Fluke | |
Model: | 177 | ||
Amperage | |||
Phone: | |||
Meter | |||
www.fluke.com |
| ||
|
| ||
|
|
| |
| Manufacturer: | Fluke | |
Thermometer | Model: | 50 | |
Phone: | |||
| |||
| www.fluke.com |
| |
Micro Amp | Manufacturer: | Fluke | |
Model: | 116 | ||
Meter | Phone: | ||
| www.fluke.com |
| |
Manufacturer: | Dwyer | ||
Model: | Slack Tube | ||
Manometer | Phone: | ||
| |||
| Manufacturer: | Monarch | |
Tachometer | Model: | Pocket Tach 100 | |
Phone: | |||
| |||
| www.monarchinstrument.com |
Warning
Check the housing, blower, and ductwork for any foreign objects before running the blower.
1. Check the Voltage
Before starting the unit, compare the supplied voltage, hertz, and phase with the unit and motor’s nameplate information.
Voltage, Hertz, Phase
VOLTS |
|
| HZ |
| PH |
|
SUP HP |
|
| EXH HP |
|
| |
|
|
|
| |||
MCA |
|
|
| MOP |
|
|
|
|
|
|
|
Electrical Nameplate
8Model VSU
Note
To reverse the rotation on three phase units, disconnect and
Note
To reverse the rotation on single phase units, disconnect and
Important
If the blower is rotating in the wrong direction, the unit will move some air, but will not perform as designed. Be sure to perform a visual inspection to guarantee the correct blower rotation.
3. Check for Vibration
Check for unusual noise, vibration or overheating of the bearings. Reference the Troubleshooting section for corrective actions.
Important
Excessive vibration may be experienced during the initial
Important
Generally, fan vibration and noise is transmitted to other parts of the building by the ductwork. To minimize this undesirable effect, the use of heavy canvas duct connectors is recommended.
4. Motor Check
Measure the motor’s voltage, amps and RPM. Compare to the specifications. Motor amps can be reduced by lowering the motor RPM or increasing system static pressure.
®