Greenheck-fan VSU Make-Up Air Unit with Direct-Fired Gas Heater Uživatelský manuál stáhnout pdf (Strana 23)

Model VSU Make-Up Air

Motor Overamps

Troubleshooting

Air volume too high?

Adjust drives or increase external

static pressure as needed.

Reference: Start-Up - Blower, Air Volume Measurement and Check, pg. 14

Motor horsepower too low?

Resize motor.

Motor voltage correct?

Provide proper power supply.

Reference: Start-Up - Blower, Check the Voltage, pg. 14

Blower rotation correct?

Reverse blower rotation.

Reference: Start-Up - Blower, Check the Blower Rotation

Actual static pressure

lower than design?

Adjust drives to reduce blower RPM.

Reference: Start-Up - Blower, Air Volume Measurement and Check, pg. 14

Yes

Shorted windings in motor?

Replace motor.

Yes

Everything is working

properly, consult factory.

Yes

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Greenheck-fan VSU Make-Up Air Unit with Direct-Fired Gas Heater Uživatelský manuál Strana 23