Greenheck Fan 470658 MSX manual Insufficient Airflow, Too Much Airflow, Troubleshooting

Troubleshooting

Insufficient Airflow

Damper(s) not fully opened?

No

System static losses too high?

No

Blower speed too low?

No

Filters dirty or clogged

No

Leaks in ductwork

No

Belt slipping

Yes

Everything is working properly,

consult factory.

Too Much Airflow

Blower speed too high?

No

Filters not in place?

No

Insufficient external static

pressure?

No

Everything is working properly,

consult factory.

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Adjust damper linkage(s), or replace faulty actuator(s).

(Damper actuators may take a few minutes to open)

Reduce losses by improving ductwork.

Adjust drives as needed.

(Reference Blower Start-Up Step #5)

Clean or replace filters.

(Reference Filter Maintenance in the Maintenance section).

Repair leaks.

Replace or tighten belt.

(Reference V-Belt Maintenance in the Maintenance section)

Adjust drives as needed.

(Reference Blower Start-Up Step #5)

Install filters.

Increase external static pressure.

28 Model MSX Make-Up Air ®