Name: Calculated Industries 4090
Brand: Calculated Industries
Rating: 5 (1 reviews)

To Next Page

To Previous Page

POCKET REFERENCE GUIDE — 22

Fan Law 1

A 1,250 CFM fan is running at 750 RPM,

but it needs to supply 1,400 CFM. What is

the RPM required?

KEYSTROKE DISPLAY

o o 0.

1. Enter current CFM into “a” old:

1 2 5 0 Ç 4 A STORED 1250.

2. Enter new CFM into “a-new”:

1 4 0 0 Ç 7 An STORED 1400.

3. Enter current RPM into “b” old:

7 5 0 Ç 5 B STORED 750.

4. Calculate new RPM or “b-new”:

Ç R RPMn FAN LAW1 840.

Questions and Answers:

Need help?

Do you have a question about the Calculated Industries 4090 and is the answer not in the manual?

Calculated Industries 4090 Specifications

General