Munters WM54K Fiberglass Wall Mount Fan with Damper Door - Instruction Manual

Introduction

Thank you for purchasing a Munters Wall Mount Fan with Damper. Munters equipment is designed to be the highest performing, highest quality equipment you can buy. With the proper installation and maintenance, it will provide many years of service.

Warranty Information

For Warranty claims information, see the “Warranty Claims and Return Policy” form QM1021, available from the Munters Corporation office at 1-800-227-2376 or by e-mail at aghort.info@munters.com.

Conditions and Limitations:

• Products and Systems involved in a warranty claim under the “Warranty Claims and Return Policy” shall have been properly installed, maintained, and operated under competent supervision, according to the instructions provided by Munters Corporation.
• Malfunction or failure resulting from misuse, abuse, negligence, alteration, accident, or lack of proper installation or maintenance shall not be considered a defect under the Warranty.

1. Unpacking the Equipment

1.1 Parts List

Each Crate Includes Parts to build 6 fans.

Each WM54K Fan Requires:

• 1 - Orifice Panel, Fiberglass
• 1 - Propeller
• 1 - Tube Strut, PWDCTD
• 1 - Motor
• 1 - Drip Shield, AL
• 1 - Main Frame Assembly, AL
• 1 - Door Assembly, PL
• 4 - Cone Sections, PL
• 1 - Cone Guard
• 1 - Inlet Guard
• 1/2 - Bulk Parts Package (BK1154) For 2 Fans

BK1154 – 1/2 of Bulk Parts Package needed for 1 - WM54K:

• 1 - Motor Base Bracket, CTD-GZ
• 1 - Belt Tensioner Bracket, CTD-GZ
• 4 - Cone Support Brackets, PC Type, GZ
• 4 - Cone/Strut Mounting Brackets, GZ
• 1 - V-Belt, A-Section
• 1 - Hub with Bearings and Shaft
• 1 - Motor Sheave, CI
• 1 - Prop Sheave, AL
• 1 - 3" Idler Pulley, A-Section C.I., Blue
• 1 - Rotary Tensioner Arm, AL
• 1 - Motor Mount Stiffener Bracket, GZ
• 2 - Tension Springs, 11.0"L./10.8"L., SS
• 1 - Hardware Package (HP1389)
• 1 - Coated Cable with ferrule, 100"L.
• 2 - Wing for Damper Door, HDPE, BLK

Hardware Package HP1389 - For 1 WM54K Fan

Hardware Kit HK1001 - For 1 WM54K Fan

Hardware Kit HK1002 - For 1 WM54K Fan

1.2 Fan Dimensions & 1.3 Tools for Installation

1.2 Fan Dimensions

Fan Specifications: 60Hz shown (50Hz available)

Power: 115/230 VAC* or 208-230/460 VAC

Phase: 1 or 3

*Available voltages vary depending on HP.

*Dimension varies depending on wall construction and motor configuration.

1.3 Tools Required for Installation

• 10mm [3/8"] Socket
• 13mm [1/2"] Socket
• 17mm [11/16"] Socket or Wrench
• 27mm [11/16"] Wrench
• 36mm Socket or Wrench
• 5/16" Socket or Wrench
• 3/8" Socket
• Phillips Screwdriver, #3 Size
• 1/8" Drill Bit
• 5/32" Hex Wrench
• Wire Cutting Pliers

2. Installation Instructions

2.1 Wall Framing

Step 1

Construct framed opening to correct size according to the Wall Opening listed in Chart A below. See Figure 1A and 1B. When installing exterior sheet metal before fan, leave 2" of the framing exposed on all sides so the orifice can mount flush to the frame.

Chart A

2.2 Fan Assembly

Step 2

Place tube strut on saw horses or a flat work surface. The large center hole should be pointing horizontally. Attach the Motor Base Bracket and the Belt Tensioner Bracket to the Tube Strut using (3) Long Bolts [CC], (2) Washers [EE] and (3) Nuts [DD]. The Motor Bracket and the Tensioner Bracket share the middle hole. See Figure 2A.

Step 2B

Attach the 3" Idler Pulley to the Tensioner Arm using Bolt [X]. Then attach the Tensioner Arm assembly to the Tensioner Bracket using Bolt [J] and Splitlock Washer [K]. Finger tighten only at this time. See Figure 2B. Next, attach the Specification Label to the Tube Strut as shown, and then mark the box for the appropriate model fan.

Step 3

Attach Prop Sheave to Hub using (4) Bolt [F], Washer [G] and Nut [H]. Tighten bolts to 180 in-lbs. of torque. See Figure 3.

Step 4

Rotate Tube Strut on saw horses so Motor Bracket is pointing up. Slide Shaft Shield [M] over hub shaft as shown in Figure 4. Attach Sheave/Hub Assembly to Tube Strut using (1) Hex Nut [L] and tighten to 52 ft-lbs [70 N-m] torque. Place Plastic Cover Cap [N] over Hex Nut and fasten in place with (1) Tapping Screw [B]. See Figure 4. Set aside the Strut Assembly for use in a later step.

Step 5

Place Orifice Panel on saw horses with the round orifice pointing up and place (1) Cone/Strut Mounting Bracket in each corner of the Orifice Panel. See Figure 5.

Step 6

Corners of Orifice Panel with 2 holes are corners where Strut Assembly attaches. Secure Strut Assembly using (4) Long Bolts [CC], (6) Washers [EE] and (4) Nuts [DD]. In the opposite corners attach Cone/Strut Mounting Bracket to the orifice using (1) Short Bolt [AA], Washer [EE] and Nut [DD]. See Figure 6.

Step 7

Attach Propeller to Hub Assembly using (4) Bolts [C], Washers [D] and Nuts [E]. Tighten bolts to 180 in-lbs. of torque. See Figure 7.

2.3 Damper Door Installation

Step 8

Slide Main Frame Assembly onto Orifice Panel with pin on Main Frame opposite the drain holes. See Figure 8A. Line up 4 holes in Main Frame with holes in the Orifice and fasten using (4) TEK Screws [FF]. See Figure 8B.

Step 9

Attach Drip Shield to bottom of framed opening using (3) Barn Screws (Not Provided). See Figure 9A and 9B. If a 4" wall is used, a support board must be installed as shown in Figure 9B. Be sure not to deform Drip Shield when installing screws.

Step 10

Locate Drain Hole in Orifice Panel. This is the bottom of the Panel. Set bottom edge of panel on Drip Shield ledge and center panel on opening. Secure Panel to wall using (16) Barn Screws (Not Provided). See Figure 10A and 10B.

Step 11

Carefully remove folded door assembly from box. Open doors and lay them flat on a solid surface with the Munters Logo down. The bottom of the doors has the Hinge Pin with Nylon Washers. The Wing sits down in the Groove of the upper right and lower left doors. For the WM54, the Wing will start just after the last spring mounting dimple and follow the Groove. Make sure Wing is seated in the bottom of the Groove and fasten in place using (3) Seal-Washer Screws [GG] per wing. Make sure Hinge Pins do not fall out. See Figure 11.

Step 12

Carefully turn doors over and pull upper Latch Pin down until the end is flush with top of doors. Make sure Long Hinge Pin (bottom) does not fall out. See Figure 12.

Step 13

Being careful not to let pins fall out, set Doors into Main Frame with Hinge Pin in hole at bottom plate of Main Frame and push top of Doors into place. See Figure 13.

Step 14

Separate doors and push them into closed position. Push Latch Pin up into place, then turn short leg of Latch Pin into recess of door. Secure in place using Seal-Washer Screw [GG] and Flat Washer [HH]. Latch Pin should extend up through upper plate in Main Frame. See Figure 14.

Step 15

Find Coated Cable and insert end opposite ferrule into small hole in upper plate of Main Frame. Pull it through until ferrule stops at the plate. See Figure 15.

Step 16

On room side of each door, drill an 1/8" dia. hole in each door through one of the dimples, as shown. For WM54, drill the 4th dimple from the center in both upper quadrants. See Figure 16.

Step 17

From the inside, attach each Tension Spring to a hole in the upper or lower plate of the Main Frame using the end of the spring with the loop. The loop should hook through the hole from the door side. Stretch spring and insert the opposite end into the hole drilled in the door previously. See Figure 17.

2.4 Cone Installation

Step 18

Place all 4 cone sections on a flat surface with tabs from one facing slots of the next. See Figure 18A. Curl up tab end of first cone section and insert tabs up into slots in the next cone section. A mallet may be needed to seat slots over tabs completely. See Figure 18B. Repeat this step until all 4 cone sections are connected and laying flat.

Step 19A

Fasten each of the joints in the single outer hole using (1) Short Bolt [AA] and Nut [DD], with the nut on the side with the tabs. At the inner pair of holes of each joint, attach (1) Cone Support Bracket to the inner hole using (1) Bolt [AA] and Nut [DD] with the bolt head on the side with the tabs. See Figure 19A.

Step 19B

Stand cone sections on end and curl ends around to form cone with Cone Support Bracket on outside and tabs on inside. Insert remaining tabs into slots so tabs are inside cone and fasten final joint using (1) Short Bolt [AA] and Nut [DD], with nut on inside of cone. At the inner pair of holes attach (1) Cone Support Bracket to the inner hole using (1) Short Bolt [AA] and Nut [DD] with bolt head on inside of cone. See Figure 19B.

Step 20A

Install cone onto fan by putting top of cone over top of fan. The hole in tab of one cone section should slide down over the Frame Pin in the Main Frame assembly. Allow remainder of cone to slide over orifice panel making sure cone support brackets remain on outside of cone. See Figure 20A.

Step 20B

Place end of Cone Support Bracket with slot over bolt holding Cone/Strut Mounting Bracket to the orifice and secure with Nut [DD]. See Figure 20B. Secure Cone to Fan installing Medium Bolt [BB] through the remaining hole in the Cone Support Bracket and fasten with Nut [DD]. A long screwdriver may be needed to help align the holes through Cone Support Bracket, Cone, Main Frame and Orifice. Repeat process for all 4 Cone Support Brackets. See Figure 20B.

Step 21

Insert guard into cone with the eyelets facing you. Install eyelets over bolts already installed in cone and fasten with Nut [DD]. Secure remaining eyelets using Short Bolt [AA] and Nut [DD]. See Figure 21.

Step 22

Loop Coated Cable that was installed in a previous step, around the lower, middle joint in guard and fasten to itself with Azuma Bolt & Nut [T]. Make sure cable is pulled snug. See Figure 22.

Step 23

If Fans are to be installed 60" O.C., cut the 3 o'clock and 9 o'clock guard wire in the position shown. Push the side of the cone in as far as possible and fasten the cut guard wire to the attached guard wire using Clamp [JJ]. See Figure 23.

2.5 Motor Mounting

Step 24

Find the Key provided with the Motor and place it in the Keyway on the motor shaft. Place the Motor Sheave on the Motor shaft with the hub facing towards the motor. See Figure 24. ONLY tighten the set screw enough to hold the Sheave in place at this time.

Step 25

Set Motor on Motor Bracket so Motor base rests against lower Motor Bracket flange. Align middle and front slots in Motor base with holes in Motor Bracket. See Figure 25.

Step 26A

Secure Motor to Motor Bracket and Motor Bracket Stiffener using (4) Short Bolts [AA] and Nuts [DD]. The rear upper bolt is where Motor Bracket Stiffener is attached. See Figure 26A.

Step 26B

Using channel locks and/or a hammer, twist the motor bracket stiffener so that the holes in the bracket lay flat against the framing. Then attach bracket to framing using (1) Lag Screw [LL]. See Figure 26B.

Step 27

Use a straight edge or level to check alignment of Propeller Sheave, Tensioner Pulley and Motor Sheave. If needed, adjust position of Motor Sheave so the 3 pulleys line up. Once Motor Sheave is aligned, tighten the set screw to 75 in-lbs [9 N-m] torque. See Figure 27.

Step 28A

Slide V-belt over Propeller and install by wrapping it around 2 smaller pulleys and starting it over the larger Sheave. Continue rolling it onto the larger Sheave until it fits into groove. See Figure 28A. If desired, the 2 drain holes in the Orifice Panel can be plugged using (2) Hole Plugs [KK].

Step 28B

To adjust belt tensioner to proper setting, loosen 10 mm bolt (using 17mm end wrench) to allow tensioner arm to rotate. Working from inlet/motor side of fan, place a 27 mm (11/16") wrench onto the hex on the tensioner. Turn wrench clockwise until the single mark on base of belt tensioner is aligned with Mark 2 on tensioner arm. Hold tensioner at this setting and tighten the 10mm bolt to 40 ft.-lbs [54 N-m] torque. See Figure 28B.

Step 29A

Cut a section of the inlet guard out to fit over the motor as shown below for the appropriate fan. When cutting the guard wires, make sure to cut them as close to the other wires as possible. See Figure 29A.

Step 29B

Place guard against framing and fasten guard in place using (8) Shutter Clips [R] and Barn Screws (not provided), 2 per side. See Figure 29B.

3. Electrical Wiring

All wiring should be installed in accordance with National, State, and Local electrical codes. Fans used to ventilate livestock buildings or other rooms where continuous air movement is essential should be connected to individual electrical circuits, with a minimum of two circuits per room. For electrical connection requirements, refer to diagram on motor nameplate and to information enclosed with the Munters environmental control to be used. After wiring, check for proper motor rotation.

Single Phase Fans: Motor overload protection should be provided for each fan. A Circuit Breaker Switch or slow blow motor type fuses must be used. See Figure 30A. See form QM1400 for proper size.

Three Phase Fans: Motor overload protection should be provided for each fan. A three-pole motor starter or slow blow motor fuses must be used. See Figure 30B.

If a frequency drive (inverter) is used, confirm that motors are rated for inverter duty at the voltage used. Shielded power cable between frequency drive and each motor is highly recommended. Installation of line reactors is recommended to reduce voltage spikes and harmonic distortion. Supplemental motor overload protection is also recommended.

KEY:

• L1 - Line 1
• L2 - Line 2
• L3 - Line 3
• H = Hot
• N = Neutral
• G = Ground

NOTE: Information in parenthesis refers to 120 VAC control.

3.1 Recommended Wiring

Step 1

As the power cable exits the back of the motor, form a drip loop and then run cable to power source. See Figure 31A and 31B.

4. Operation

1. INITIAL START-UP: With electrical power off, verify that the fan propeller turns freely and that all fasteners are secure. Turn on electrical power and confirm that the fan operates smoothly.
2. ADJUSTMENTS: Set fan control to temperature shown on your Aerotech ventilation system drawing, or to a value which will provide the desired environmental conditions.

⚠️ Disconnect Power Before Servicing

⚠️ Moving Parts, Disconnect Power Before Servicing.

⚠️ Moving Parts: Disconnect Power Before Servicing.

⚠️ Do Not Power Wash Electrical Devices.

Single Phase Fans: Single phase fans are designed for single speed operation only.

Three Phase Fans: If a frequency drive is used, the minimum operating frequency is 30 Hz.

5. Maintenance

The following inspection and cleaning procedures should be performed monthly:

Tools Needed for Maintenance:

wrenches: 10mm, 13mm, 17mm, 27mm, 1/2", 6mm Hex

1. INSPECT PROPELLER: Check that propeller is secure on drive hub and that there are no signs of damage. The blades are of a self-cleaning design and should not require maintenance.
2. CLEAN regularly for best results:
   • FAN MOTOR: Remove any dust accumulation from motor using a brush or cloth. (DO NOT use a pressure washer). A clean motor will run cooler and last longer. At the same time, verify that the motor is secure in its mount.
   • DAMPER: Carefully clean dust from damper doors and frame so that doors open and close freely. A brush or cloth should be used.
   • GUARD: Clean any dust or feathers from fan guards using a brush. Dirty guards can reduce airflow.
3. CHECK FASTENERS: For safety, all fasteners should be inspected 1 month after initial operation and yearly thereafter. Tighten any loose connections.
4. INSPECT FAN CONTROL: With power disconnected, inspect all electrical connections. Wiring should be secure and in good condition. Remove any dust build-up from control case and sensor using a soft brush or cloth. NEVER CLEAN ELECTRICAL EQUIPMENT WITH A PRESSURE WASHER!
5. CHECKING PULLEYS: Roll the belt off and look at all pulleys. If a pulley has grooves in it or is no longer smooth, it needs replacement. A loose or slipping belt will reduce fan performance up to 60% and cause premature belt failure.
6. CHECK DRIVE ALIGNMENT: Check alignment of belt on idler pulley; it should be centered on the idler pulley. The belt tensioner idler pulley and propeller sheave are fixed in position; therefore, alignment must be obtained by adjusting the motor sheave. If an adjustment is needed, remove the belt, then loosen the set screws in the sheave and move as necessary to achieve proper alignment. Remember to tighten the set screws after making an adjustment. Drive alignment is very important for long belt life and proper operation.
7. BELT TIGHTENING: To adjust belt tensioner to the proper setting, loosen 10 mm bolt (using 17mm end wrench) to allow tensioner arm to rotate. Working from inlet/motor side of fan, place a 27 mm (11/16") wrench onto the hex on the tensioner. Turn wrench clockwise until the single mark on base of belt tensioner is aligned with Mark 2 on tensioner arm. Hold tensioner at this setting and tighten 10mm bolt to 40 ft.-lbs [54 N-m] torque.

⚠️ Disconnect Power Before Servicing

⚠️ Moving Parts, Disconnect Power Before Servicing.

⚠️ Moving Parts: Disconnect Power Before Servicing.

⚠️ Do Not Power Wash Electrical Devices.

6. Winterizing

6.1 Winterizing

In most climates, it is probable that the ventilation system will never need to operate at a total capacity during the colder winter months. Consequently, it is advisable to “winterize” those fans which will not be used in cold weather to avoid unnecessary heat loss and condensation.

To winterize, turn fan control “off“. Install the insulated closure panel over the fan intake. If you don't have an insulated closure panel, a piece of rigid insulation material can be used. Remember the insulation panel must be removed before warmer weather returns.

6.2 Winter Weather Protection

To prevent cone or fan damage from snow or ice sliding off building roof, weather protection must be provided. A weather shelter may be constructed to cover the entire fan, See Figure 32, or snow guards may be placed on the roof, See Figure 33.

*Snow Guard Suppliers

7. Troubleshooting

⚠️ Disconnect Power Before Servicing

⚠️ Moving Parts, Disconnect Power Before Servicing.

⚠️ Moving Parts: Disconnect Power Before Servicing.

8. Exploded View

Fan Components

Damper/Cone Components

8. Parts List

* Parts listed are for specific fan configuration. Contact office for replacement part numbers for your fan configuration.

Contact Information & Product Development

WM54K is developed and produced by Munters Corporation, Lansing, Michigan U.S.A. 1-800-227-2376

Munters Europe AB, Isafjordsgatan 1, P.O. Box 1150, SE-164 26 Kista, Sweden. Phone +46 08 626 63 00, Fax +46 8 754 56 66.

Munters Corporation 2691 Ena Drive Lansing, MI 48917 U.S.A. Phone +1 800-227-2376, Fax +1 517-676-7078

Website: www.munters.us

Regional Offices:

• Australia: Munters Pty Limited, Phone +61 2 6025 6422
• Brazil: Munters Brasil Industria e Comercio Ltda, Phone +55 41 3317 5050
• Canada/US: Munters Corporation Lansing, MI Phone +1 517 676 7070
• China: Munters Air Treatment Equipment (Beijing) Co. Ltd, Phone +86 10 80 481 121
• Denmark: Munters A/S, Phone +45 9862 3311
• India: Munters India, Phone +91 20 3052 2520
• Indonesia: Munters, Phone +62 818 739 235
• Italy: Munters Italy S.p.A., Chiusavecchia, Phone +39 0183 52 11
• Japan: Munters K.K., Phone +81 3 5970 0021
• Korea: Munters Korea Co. Ltd., Phone +82 2 761 8701
• Mexico: Munters Mexico, Phone +52 818 262 54 00
• Russia: Munters AB, Phone +7 812 448 5740
• Singapore: Munters Pte Ltd., Phone +65 744 6828
• South Africa and Sub-Sahara Countries: Munters (Pty) Ltd., Phone +27 11 997 2000
• Spain: Munters Spain S.A., Phone +34 91 640 09 02
• Sweden: Munters AB, Phone +46 8 626 63 00
• Thailand: Munters Co. Ltd., Phone +66 2 642 2670
• Turkey: Munters Form Endüstri Sistemleri A.Ş, Phone +90 322 231 1338
• USA: Munters Corporation, Lansing MI Phone +1 517 676 7070
• Vietnam: Munters Vietnam, Phone +84 8 3825 6838
• Export & Other countries: Munters Italy S.p.A., Chiusavecchia Phone +39 0183 52 11

Munters reserves the right to make alterations to specifications, quantities, etc., for production or other reasons, subsequent to publication. © Munters AB, 2015