Greenheck Fan 470656 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 Filters in the Maintenance section)

Repair leaks.

Replace or tighten belt.

(Reference V-Belt Drives in the Maintenance section)

Adjust drives as needed.

(Reference Blower Start-Up – Step #5)

Install filters.

Increase external static pressure.

48 Model IG / IGX Make-Up Air

®