Insufficient Airflow / Too Much Airflow. Greenheck Fan DGX Part #470655, Part #470655

Troubleshooting

Insufficient Airflow

Damper(s) not fully opened?

Yes

No

System static losses too high?

Yes

No

Blower speed too low?

No

Filters dirty or clogged?

Yes

Yes

No

Leaks in ductwork?

Yes

No

Belt slipping?

Yes

Everything is working properly, consult factory.

Yes

Too Much Airflow

Blower speed too high?

No

Yes

Filters not in place?

No

Insufficient external static pressure?

No

Everything is working properly, consult factory.

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.

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.

DGX Industrial Space Heating 19