Munters 48 tentioner AddOn Owner's manual

Brand: Munters

Model: 48 tentioner AddOn

Type: Owner's manual

Belt Tensioner Add-On Kit

for 48" Advantage Fan

FH2417

Aerotech, A Munters Company

4215 Legion Dr. Mason, MI 48854-1036 USA

(517) 676-7070 Fax (517) 676-7078

FORM: QM1210

January 2004

Page 1 of 3

INSTALLATION INSTRUCTIONS

Disassembling the fan. (Keep all fasteners, as they will be reused, unless otherwise

noted.)

1) Remove the shutter or inlet guard from the fan. See Figure 1A.

2) Remove the existing drive belt.

3) Disconnect the electrical power leads from the motor and remove the motor from

the motor base. See Figure 1B. Remove motor base from the struts. See Figure 1C.

WARNING

High Voltage,

disconnect power

before servicing.

AT481Z1 without

Tensioner

AT481Z1 with

Tensioner

Figure 1B

Motor Base

Existing

Fasteners

(to be

kept)

Existing

Drive Belt

Belt Tensioner Kit (FH2417) includes:

1 - Motor Base Bracket

1 - V-Belt A-Section Aramid (FH1410)

1 - Tensioner Assembly

/8" x 1.75 Bolt, SS

/8" Flat Washer

built from July 11, 2003—Sept. 15, 2003

Figure 1C

Motor Base

Motor

Figure 1A

Inlet (shutter side)

Aerotech, A Munters Company

4215 Legion Dr. Mason, MI 48854-1036 USA

(517) 676-7070 Fax (517) 676-7078

FORM: QM1210

January 2004

Page 2 of 3

4) Fasten the new motor base to the struts using fasteners removed in Step 3. The flanges on the base point

downward and the front flange will be toward you. See Figure 2. Insert bolts through struts and then through

the motor base. Place flat washer over bolt against motor base and finger tighten flange nut. See Figure 2.

After all bolts are inserted, tighten all nuts tight.

5) Install motor, removed in Step 3, to motor base, insuring the motor support is square with the motor base.

Using straight edge, align motor pulley with propeller pulley and tighten motor bolts.

Figure 3

/8" x 1.75

Bolt

/8" Flat

Washer

Tensioner

Left Hole

Idler

Propeller

Pulley

Motor

Pulley

Figure 2

Motor Base

Bolt

removed

in Step 3

Nut and Washer

6) Install the belt tensioner finger tight, in the left hole of the motor base as viewed from the inlet (shutter side) of

the fan. See Figure 3.

7) Install new belt on pulleys. Start by placing belt over motor pulley, then over idler pulley and rotate around

bottom of propeller pulley. See Figure 3.

Aerotech, A Munters Company

4215 Legion Dr. Mason, MI 48854-1036 USA

(517) 676-7070 Fax (517) 676-7078

FORM: QM1210

January 2004

Page 3 of 3

Drive Alignment

1) Use a straight edge to check the alignment of the pulleys. See Figure 5.

2) Check alignment of belt on idler pulley, it should be centered on the idler pulley. The belt tensioner’s idler

pulley is fixed in position, therefore, alignment must be obtained by adjusting the motor and propeller pulleys.

3) If an adjustment is needed, remove the belt, then loosen the set screws in the pulleys and move them as

necessary to achieve proper alignment.

4) Remember to tighten the pulley set screws after making an adjustment.

5) Drive alignment is very important for long belt life and proper operation.

Installation now complete, reconnect power to the motor and install the shutter or inlet guard.

Mark on Base

Second Mark on

Tensioner Arm

Figure 4

8) To torque the belt tensioner to the proper setting place a

/16" wrench onto the

/16" hex on the tensioner.

See Figure 4. Turn wrench counterclockwise until the single mark on one half of the belt tensioner is aligned

half way between marks 2 and 3 on the opposite half of the tensioner. See Figure 4. Hold tensioner at this

setting and tighten the

/8" x 1

/4" bolt fastening the tensioner to the motor base. Fasten tensioner

/8" bolt to

40ft. lbs of torque. See Figure 4.

Figure 5

Idler Pulley

Propeller

Pulley

Straight Edge

Belt

Motor

Pulley

Munters 48 tentioner AddOn Owner's manual

Munters 48 tentioner AddOn Owner's manual

Munters 48 tentioner AddOn Owner's manual

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