Multi-Wing Z Series - User Manual

Multi-Wing Z Series Fans
Blade Pitch Angle Setting Instructions
Before You Begin:
To maintain balance of fan:
 Mark the hub castings across a joint.
 Mark the location of any balancing weight.
 Number the blades and blade sockets.
Step 1 – Determine Blade Type: 1Z, 2Z, 4Z, 5Z, 6Z, 7Z, TR7Z or TR8Z
Look for markings on blade which are in one of two places:
Look on cone section at base of blade, or
Look inside the bottom of the socket (blade must be removed from hub).
Finally, if not sure, visit Multi-Wing Parts at www.multi-wing.net, or contact us.
Step 2 – Determine Rotation Code: L or R
R rotation rotates clockwise facing air discharge; L rotation is counterclockwise facing air discharge.
Examples of rotation for 4Z blades as viewed from end of socket are below, and 5Z is similar.
R, or clockwise L, or counterclockwise
Step 3 – Find Blade Pitch Angle: 20, 25, 27.5, 30, 32.5, 35, 37.5, 40, 45, or 50
The blade pitch angle can be found several ways:
First, by knowledge of the Multi-Wing fan part number.
The pitch angle precedes the blade material code in the part number. For example, the pitch angle is
30 degrees in this part number: 36/9-9/30/PPG/5ZR/ SH 1-3/8 /AS
Second, by careful disassembly:
 Disassemble fan on flat surface, and note in which groove the pin is
located. See number code in picture to the right.
 Using table in step 5 below, find the possible blade pitch.
Third, by calling a sales engineer at Multi-Wing for assistance.

Summary

Before You Begin

Determine Blade Type

Determine Rotation Code

Find Blade Pitch Angle

By Part Number

Determine pitch angle using the Multi-Wing fan part number. The angle precedes the material code.

By Careful Disassembly

Disassemble fan, note pin groove location, and use table to find possible blade pitch.

By Sales Engineer Assistance

Contact a Multi-Wing sales engineer for assistance in determining blade pitch angle.

Determine Groove Number

Final Assembly

Round Pin Assembly

Place locking pin in groove number based on chart. Align pin for R or L rotation as shown.

3.5 Degree Offset Pin Assembly

Place locking pin in groove number based on chart. Align pin for R or L rotation as shown.

Multi-Wing Z Series Specifications

General

Hub Material	Aluminum
Weight	Varies by model
Fan Type	Axial
Blade Material	Aluminum
Speed	Varies by model
Airflow	Varies by model
Current	Varies by model
Power	Varies by model
Diameter	100-630 mm