Munters RF-VX36-H Series User manual

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© Munters Corporation, March 2017 QM1226r3
Instruction Manual
Munters Drive Retrofit Kit
AT36/VX36 or AT48/VX48 Retrofit Kit
Models: RF- VX36xx-Hx •RF-VX48xx-Hx
Munters Drive*
AT36/ VX36
AT48/VX48
Retrofit Kit
*Patents Pending

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Munters Drive AT36/48 & VX36/VX48 Retrofit Kit
Manual for use and Maintenance
Thank You:
Thank you for purchasing a Munters Drive 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 [email protected].
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.

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© Munters Corporation, March 2017 QM1226r3
Index
Chapters Page
1. Unpacking the Equipment 4
1.1 Parts List 4
2. Installation Instructions 5
2.1 Install 5
2.2 Fan With X-Strut 7
2.3 Installation with Munters Drive H-Strut 8
3. Electrical Wiring 12
3.1 Recomended Wire Routing 12
3.2 Electrical Wiring 15
4. Operation and Maintenance 21
5. Troubleshooting 22
6. Exploded View 23

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Unpacking the Equipment 1.
1.1 Parts List
Each Munters Drive Retrofit Kit includes:
1 – Left Tube Strut
1 – Right Tube Strut
4 – Strut Spacer
1 – Munters Drive Motor
1 – Munters Drive Controller
1 – Hardware Package as follows:
HP1317 – Hardware package
[A]…..16 – ¼” x 1.75” Hex Bolt, SS
[B]…..16 – ¼” Type-A Narrow Flat Washer, SS
[C]…..16 – ¼” Hex Flange Nut, SS
[D]……8 – 5⁄16” x 3” Hex Bolt, SS
[E]……8 – 3⁄8” Flat Washer, SS
[F]…..16 – 5⁄16” Splitlock Washer, SS
[G]……8 – 5⁄16” x 1” Hex Bolt, SS
[H]……8 – 5⁄16” x 1¼” OD Flat Washer, SS
[J]…….4 – 5⁄16” Wing Nut, NY
[K]……4 – #10 x ¾” TEK Screw, HXWSR, SS
[L]……4 – 3⁄8” Dia. Wire Clamp, BLK, NY
[A]
[B]
[C]
[D]
[E]
[F]
[G]
[H]
[J]
[K]
[L]
Before beginning installation, check the overall condition of the equipment. Remove packing materials, and examine all
components for signs of shipping damage. Any shipping damage is the customer’s responsibility and should be reported
immediately to your freight carrier. Fan is shipped complete with all accessories. Remove shutter, guard and cone sections
before proceeding with installation.

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Installation Instructions 2.
2.1 INSTALL
Step 1
Disconnect power from fan before continuing. Remove the shutter from the back of the fan and the guard
from the cone and set safely aside to be reinstalled later. See Figure 1.
Figure 1
Figure 2
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.

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Figure 3A
Bolt and Washer
Step 3
Disconnect the electrical power leads from the motor. For an X-Strut frame remove the bolts and washers
holding the fan struts to the fan housing and remove the fan drive unit in one piece, this includes the struts, motor,
bearings and strut brace. See Figure 3A. For an H-Strut frame remove the bolts and 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 of the fan housing. See Figure 3B. Be sure not to damage the bolt holes in the housing, as these
holes will be reused.
Note: If your 48” fan was built before July 11, 2003 or 36” fan before March 15, 2004 and has the X-Strut the
proceed to Step 4. If your fan was built after July 11, 2003 for the 48” or after March 15, 2004 for the 36”
and/or has the H-Strut then proceed to Step 6.
Figure 3B
Bolt and Washer
48” Fan with X-Strut built before July 11, 2003
36” Fan with X-Strut built before March 15, 2004
48” Fan with H-Strut built after July 11, 2003
36” Fan with H-Strut built after March 15, 2004
Installation InstructionsChapter 2

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2.2 Fan With X-Strut
Step 4
Identify the top and bottom legs of the New Tube Struts (supplied). The top leg of the strut is the shorter leg with
the larger angle and the bottom leg is the longer leg with the smaller angle. See Figure 4A. Position the Tube
Struts into the fan housing and align the outermost holes in each strut leg with the outermost holes in the housing
and fasten in place using (4) bolts [D] and wing nut [J]. See Figure 4B.
Figure 4A
Wingnut [J]
Bolts [D]
Strut
Figure 4B
Strut
Short Leg
Long Leg
Small Angle
This Face Goes Against Housing
Large Angle
Installation InstructionsChapter 2

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Step 5
From the inside of the housing, use a drill and 5⁄16” bit to drill a hole in each corner of housing using
the inner most holes in each strut. Be sure to center the hole. See Figure 5. Once all 4 holes are
drilled remove the struts by removing the wing nuts and bolts. Bolts will be reused.
Figure 5
Figure 6
Step 6
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 6.
Installation InstructionsChapter 2
Top Foam Packaging
2.3 Installation with Munters Drive H-Strut
Bottom Foam Packaging

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© Munters Corporation, March 2017 QM1226r3
Step 7
Remove the top section of the foam packaging to reveal the Munters Drive motor and Controller and
leave them in the foam packaging. With the Motor sitting in the foam packaging, position the Strut on
the motor with the short leg towards the controlletr 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 7.
Figure 7
Step 8
Fasten Struts to motor using (8) bolts [A], washers [B] and nuts [C]. See Figure 8.
FINGER TIGHTEN ONLY AT THIS TIME.
Figure 8
Motor
Foam Packaging
Controller
Short Leg
Long Leg
Nut [C]
Bolt [A]
Washers [B]
Offset Hole pattern
Installation InstructionsChapter 2

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Step 9
Carefully pull the Munters Drive controller out of the foam packaging and slide it between the struts so that
the 4 holes in each strut line up with the holes in each side of the controller bracket and fasten with (8) bolts
[A], washers [B] and nuts [C]. See Figure 9. Tighten all bolts and nuts at this time.
Figure 9
Washer [B]
Bolt [A]
Controller
Nut [C]
Installation InstructionsChapter 2
Step 10
With the Munters Drive motor/strut assembly still sitting in the foam packaging attach the (4) Strut Spacers
to the under side of the tube strut using (2) bolts [D], washers [E] and splitlock washers [F]. See Figure 10
Bolt [D]
Washers [E]
Spitlock Washers [F]
Figure 10
Strut Spacer
Controller Bracket

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Step 11
A 2x4 wood block may be used to rest retrofit kit on as you position it. Position the completed Munters
Drive Retrofit Assembly into the fan housing and fasten in place using (8) bolts [G], washers [H] and
splitlock washers [F]. See Figure 11. FINGER TIGHTEN ONLY AT THIS TIME.
Bolt [G]
Figure 11
Splitlock washer [F]
Washer [H]
Step 12
Install the propeller that was removed in Step 2 onto the new shaft of the M-Drive making sure that the set
screws in the propeller lines up with the flats on the shaft. Tighten the set screws to 150 in-lbs. of torque.
See Figure 12. Make sure the propeller is centered in the fan orifice and spins freely. If needed the
M-Drive Kit can be pushed slightly to center the propeller. To help with centering, position propeller with
1 blade at the 12 o’clock position then use (2) wood or plastic wedge between the other 2 blades and
the orfice. When the propeller is centered and can spin freely, tighten the (8) bolts holding the struts to the
housing.
Figure 12
Munters Drive Retrofit assembly
Wood
block
Wood or Plastic wedge
Flats on Shaft
Set Screw
Installation InstructionsChapter 2

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Step 13
The Munters Drive Retrofit Kit comes with a coil of electrical cable that is pre-wired to motor.
Determine where the existing power for the fan entered the housing and route the cable up the left or
right strut toward the existing power. Create a drip loop in the bottom of the cable and then fasten it
to the strut using (3) wire clamps [L] and TEK screws [K]. Attach the new cable to the existing power
supply for the fan. See Figure 13A & 13B. Continue on next page.
Junction Box
Figure 13A
3.1 Recommended Wire Routing
Electrical Cable
Electrical Wiring 3.
Drip Loop
Wire Clamp [L] and Tek Screw [K]

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3 Wire Clamps [L]
Figure 13B
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 saftey and
compliance. See Figures 13B and 13C.
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 13B. Continue
on next page.
Three Phase
Motor Overload Protection with Disconnect
Three Phase
Power Supply for Fan
Three Phase
Power Out to Fan
Motor
Safety
Cut-Off Switch
Single Phase
Motor Overload Protection with Disconnect
(SY2000 or Equivalent)
240 VAC
Power Supply for Fan 240 VAC
Power Out to Fan
Existing Circuts in this Configuration May be used:
Recommended Lightning Protection
FC2003, 230V, 1 Phase
L1
L2
G
L1(H)
L2(N)
T1(H)
T2(N)
T1
T2
G
T1
T2
T3
G
L1
L2
L3
G
Recommended Lightning Protection
FC2006, 230V, 3 Phase
FC2009, 460V, 3 Phase
Existing Circuit Breaker
Existing
Motor Starter
Continued from previous page
Electrical WiringChapter 3

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(continued)
Electrical WiringChapter 3
Figure 13C
T1
T2
T3
G
Three Phase
Power Out to Fan
Motor
Three Phase
Power Supply for Fan
L1
L2
L3
G
Safety
Cut-Off Switch
Recommended Lightning Protection
FC2003, 230V, 1 Phase
240 VAC
Power Supply for Fan
L1
L2
G
T1
T2
G
240 VAC
Power Out to Fan
Single Phase
Three Phase
Motor Overload Protection with Disconnect
Recommended Lightning Protection
FC2006, 230V, 3 Phase
FC2009, 460V, 3 Phase
Safety
Cut-Off Switch
Existing
Circuit Breaker

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3.2 Recommended Wiring
The Munters Drive fan ships configured for simple ON/OFF control. When electrical power is applied to
the main cable the fan will start and run at full speed. See Figure 14A .
To operate the Munters Drive On/Off with a control, Slide the ‘ON’ switch, located on the circuit board in
the junction box, away from the ON 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 junction
box. See Figure 14A & 14B.
When making connections to junction 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 junction box wall to prevent water infiltration.
‘ON’ Switch
Figure 14A
Default Operation Full Speed
Junction Box
Electrical WiringChapter 3

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Electrical WiringChapter 3
Figure 14B
On/Off Remotely
Control
Relay
Junction Box
Junction Box
‘ON’ Switch

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To operate the Munters Drive Off/Low/High with a control, slide the ‘ON’ switch, located on the circuit board
in the junction box, away from the ON position. Now wire an ‘ON’ command from the “COMMOM” terminal
to the input relay in the control and from the output of the relay to the ‘RUN’ terminal in the junction box. Then
connect the output of the control relay for ‘LOW’ to the ‘REDUCED FLOW’ in the junction box. See Figure 13C.
To Operate the Munters Drive variable with a 10-0V Signal. connect wires from the ‘0-10V IN’ and ‘0-10V
COMMON’ terminals in the Junction box to the 10-0V output in the control. See Figure 13D.
Figure 13C
Off/Low/High Remotely
‘ON’ Switch
Junction Box Control Relay
Box
Electrical WiringChapter 3

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Figure 13D
Variable Speed Operation
Junction Box
Junction Box
10-0V
Output
In Control
‘ON’ Switch
Electrical WiringChapter 3

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To operate the Munters Drive Off/Variable with a 10-0V Signel, slide the ‘ON’ switch, located on the
circuit board in the junction box, away from the ON 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 juction box. Also, connect wires from the ‘0-10V IN’ and ‘0-10V COMMON’
terminals in the junction box to the 10-0V output in the control. See Figure 13E.
Figure 13E
Off/Variable Speed Operation
Junction Box
Control
Relay
Box
10-0V
Output
In Control
‘ON’ Switch
WARNING: Fan is designed to be operated with shutter in place. Do not apply power to fan without
shutter being installed.
Electrical WiringChapter 2

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Step 14
Reinstall the shutter in the back of the fan and the guard in the cone. See Figure 15.
Installation is now complete.
Electrical WiringChapter 3
Figure 15