Munters Drive VX51/VX55 Retrofit Kit

Thank You:

Thank you for purchasing a Munters Drive VX55 or VX51 Retrofit Kit. 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.

Please Note:

To achieve maximum performance and insure long life from your Munters product it is essential that it be installed and maintained properly. Please read all instructions carefully before beginning installation.

Warranty:

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.

Index

Chapters

1. Unpacking the Equipment
   1. Parts List
2. Installation Instructions
3. Electrical Wiring
   1. Recommended Wire Routing
   2. Electrical Wiring
   3. Recommended Wiring
4. Operation and Maintenance
   1. Operation
   2. Maintenance
5. Troubleshooting
6. Exploded View and Parts List

1. Unpacking the Equipment

1.1 Parts List

Each Munters Drive Retrofit kit includes:

• 1 - Left Strut
• 1 - Right Strut
• 1 - Munters Drive Motor
• 1 - Munters Drive Controller
• 1 - Hardware package as follows:

HP1320 – Hardware Package

2. Installation Instructions

2.1 Install

Step 1

Disconnect power from fan before continuing. Remove the shutter from the back of the fan and if necessary the guard from the cone and set safely aside to be reinstalled later. See Figure 1.

[Diagram showing fan with shutter removed and guard possibly removed]

Step 2

Loosen the set screws holding the propeller to the shaft. Carefully remove the propeller from the fan and set safely aside to be reused. A gear puller or prop puller may need to be used. See Figure 2.

[Diagram showing propeller being removed from fan shaft]

Step 3

Disconnect the electrical power leads from the motor. Remove the (4) bolts and (8) washers holding the fan struts to the fan housing and remove the fan drive unit in one piece, this includes the struts, motor base, motor, bearing base and bearings. Make sure that all the washers are removed from the fan housing in all 4 locations on the outside and around the 2 lower holes on the inside of the fan housing. See Figure 3.

[Diagram showing fan drive unit being removed, highlighting bolts and washers]

Step 4

Locate box and make sure it is facing up and open the box. Remove the top section of the foam packaging to reveal the Munters Drive motor and Controller and leave them in the foam packaging. Carefully remove the lower section of foam packaging with the motor and controller still in it and set on a flat surface for assembly. See Figure 4.

[Diagram showing fan motor and controller being unpacked from foam packaging]

Step 5

Carefully remove the Munters Drive Controller from foam packaging and set safely aside for later installation. With the Motor sitting in the foam packaging, position the Strut on the motor with the flat edge of the strut against the motor, the short leg towards where controller was and the long leg away from the controller and line up the offset hole pattern in the struts with the offset hole pattern in the motor. When the struts are in the correct position the 4 extra holes will be towards the controller. See Figure 5.

[Diagram illustrating strut positioning on the motor]

Step 6

Fasten Struts to motor using (8) Bolts [F], Washers [G] and Nuts [H]. See Figure 6. FINGER TIGHTEN ONLY AT THIS TIME.

[Diagram showing struts being fastened to the motor with bolts, washers, and nuts]

Step 7

Retrieve the Munters Drive Controller and connect the Quick Connect Connector to the Motor. Slide the Controller with bracket between the struts so that the 2 holes in each strut line up with the holes in each side of the controller bracket and fasten with (4) Bolts [F], Washers [G] and Nuts [H]. See Figure 7. Tighten all bolts and nuts at this time.

[Diagram showing controller being connected to the motor with bolts, washers, and nuts]

Step 8

Place the (2) OSB Spacers [E] in the bottom of the fan with (1) spacer in front of each of the mounting holes for the struts. Remove any debris necessary so the spacers [E] lay flat. Set the new Munters Drive Retrofit Kit into the fan with the bottom of the struts sitting on the (2) OSB Spacers [E]. Place (2) 3½" Washers [D] over the threaded inserts in the bottom of the new fan struts. See Figure 8.

[Diagram illustrating placement of OSB spacers and retrofit kit in the fan]

Step 9

With the new Munters Drive Retrofit Kit in the fan fasten the struts of the Kit to the fan housing using (4) Bolts [A], Washers [B] and Seal Washers [C]. When fastening the bottom of the struts to the bottom of the fan housing make sure that the (2) 3/4" Washers [D] are around the threaded insert. See Figure 9. FINGER TIGHTEN ONLY AT THIS TIME.

[Diagram showing retrofit kit struts being fastened to the fan housing]

Step 10

Install the propeller that was removed in Step 2 onto the new shaft of the Munters Drive making sure that the set screws in the prop line up with the flats on the shaft. Tighten the set screws to 150 in-lbs. of torque. See Figure 10A.

[Diagram showing propeller installation and set screw tightening]

Step 11

Make sure the prop is centered in the fan orifice and spins freely. If needed the Munters Drive Kit can be pushed slightly to center the prop. When the prop is centered and can spin freely, tighten the (4) bolts holding the struts to the housing. See Figure 10B.

[Diagram showing final check of propeller centering and tightening of bolts]

3. Electrical Wiring

3.1 Recommended Wire Routing

The Munters Drive Fan comes with a coil of electrical cable that is pre-wired to motor. Find the end of the cable and route it outside the fan and connect it to the incoming power supply and/or the safety cut-off switch. (Safety cut-off switch by others). Create a drip loop in the bottom of the cable and then fasten it to the strut using (4) Wire Clamps [K] and TEK screws [J]. Attach the new cable to the existing power supply for the fan. See Figure 11A and 11B. Continue on next page

[Diagram illustrating recommended wire routing with drip loop and wire clamps]

WARNING: Fan is designed to be operated with shutter in place. Do not apply power to fan without shutter being installed.

3.2 Electrical Wiring

Single Phase and Three Phase Munters Drives: Power Supply for fans to have circuit breaker or Fuse Protection. The installer must refer to NEC and local codes to ensure safety and compliance. See Figures 11B and 11C.

If lightning protection was purchased, wire it to the fan power supply as shown and secure the lightning protection unit out of the way of moving parts in the fan. See Figure 11B.

[Diagram showing single-phase and three-phase wiring configurations with circuit breakers and lightning protection]

For preferred wiring, See Figure 11C.

[Diagram showing alternative preferred wiring configurations]

3.3 Recommended Wiring

The Munters Drive fan ships configured for simple ON/OFF operation. When electrical power is applied to the main cable and the 'RUN' Switch is in the 'ON' Position, the fan will start and run at full speed. See Figure 12A.

'RUN' Switch is defaulted to the 'OFF' position.

[Diagram of the circuit board in the Munters Drive Box showing RUN switch positions]

WARNING: The Blue Box electrical enclosure must not be removed from mounting bracket. Removing Blue Box from the mounting bracket will void the warranty. Any water or other damage to the controller will not be covered if the Blue Box is removed.

NOTE: All Low Voltage wire must be shielded cable. i.e. Belden 8770 or equivalent.

WARNING: Fan is designed to be operated with shutter in place. Do not apply power to fan without shutter being installed.

When making connections to Munters Drive Box, be sure to use the supplied watertight fittings with only 1 cable per fitting. If watertight fittings are not used or if 2 cables or more are in 1 watertight fitting, equipment failure from water damage will not be covered under warranty. If 2 or more cables are used in 1 watertight fitting, they must be sealed on both sides of Munters Drive Box wall to prevent water infiltration.

If you are going to run the Munters Drive with a signal from a control, carefully remove 6 screws and the cover and save to reinstall later. Carefully punch the knock-out from the bottom of the Munters Drive Box and install the Watertight connector as shown. See Figure 12B and 12C.

[Diagram showing connection to Munters Drive Box with watertight fittings and knock-out removal]

To operate the Munters Drive On/Off with a control, Slide the 'RUN' switch, located on the circuit board in the Munters Drive Box, to the 'OFF' position. Now wire an 'ON' command from the 'COMMON' terminal to the input relay in the control and from the output of the control relay to the 'RUN' terminal in the Munters Drive Box. See Figure 12A and 12D.

[Diagram showing remote On/Off control wiring]

To operate the Munters Drive Off/Low/High with a control, slide the 'RUN' switch, located on the circuit board in the Munters Drive Box, to the 'OFF' position. Now wire an 'ON' command from the 'COMMON' terminal to the input relay in the control and from the output of the relay to the 'RUN' terminal in the Munters Drive Box. Then connect the output of the control relay for 'LOW' to the ‘REDUCED FLOW' terminal in the Munters Drive Box. See Figure 12E.

[Diagram showing remote Off/Low/High control wiring]

To Operate the Munters Drive variable with a 10-OV Signal, slide the 'RUN' switch, located on the circuit board in the Munters Drive Box, to the 'ON' position. Connect wires from the ‘0-10V IN' and '0-10V COMMON' terminals in the Munters Drive Box to the 10-0V output in the control. See Figure 12F.

[Diagram showing variable speed operation wiring with 0-10V signal]

To operate the Munters Drive Off/Variable with a 10-0V Signal, slide the 'RUN' switch, located on the circuit board in the Munters Drive Box, to the 'OFF' position. Now wire an 'ON' command from the 'COMMON' terminal to the input relay in the control and from the output of the control relay to the 'RUN' terminal in the Munters Drive Box. Also, connect wires from the '0-10V IN' and '0-10V COMMON' terminals in the Munters Drive Box to the 10-0V output in the control. See Figure 12G.

[Diagram showing Off/Variable speed operation wiring with 0-10V signal]

4. Operation and Maintenance

4.1 Operation

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

4.2 Maintenance

The following inspection and cleaning procedures should be performed monthly:

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.
   • SHUTTER: Carefully clean dust from shutter and frame so that shutter opens and closes 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. 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. Troubleshooting

5.1 Troubleshooting

6. Exploded View and Parts List

[Diagram of exploded view of the fan with numbered parts]

* Contact office for replacement part numbers for your fan configuration.

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