Munters MD2-ATS7443-HO Motor and Controller Replacement Kit Instruction Manual

Thank you for purchasing a “MD” motor & controller replacement 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.

Unpacking the Equipment

Parts List

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.

Each “MD2” Munters Drive G2 Kit Includes:

1 – Munters Drive G2 Motor/Controller Assembly

1 – Hardware Package As Follows:

If you are Installing this MD2 kit on an Atlas 74 Exhaust Fan, proceed to Page 5, Step 1.
If you are installing this MD2 Kit on a CX74 Circulation Fan, proceed to Page 15, Step 13. See Figures below.

Installation Instructions

MD2 Replacement for Atlas74 Fan

Step 1 Disconnect power from fan before continuing. Remove the shutter from the back of the fan and set safely aside to be reinstalled later. See Figure 1.
Step 2 For the Atlas 74 Fan it will be necessary to work from the front of the fan as well as the back of the fan, so remove the outlet guard and bottom cone section of the cone for easy access. Set the Guard and Cone Section and hardware aside to be reinstalled later. See Figure 2.

Step 3 Loosen the (4) captured screws in the Munters Drive Box cover to access the drive wiring. Make a note of or take a photo of the wiring. Disconnect 3 phase power and the control wires from the drive and from the box. Then replace the cover. See Figure 3.
Step 4 Loosen the Set Screw holding the propeller to the shaft. Carefully remove the propeller from the fan and set safely aside to be reinstalled later. A gear puller or prop puller may need to be used. See Figure 4. Remove Key from Prop Adapter and keep with prop to be reused later.

Step 5 Remove the (4) Bolts and Star Washers holding the Prop Adapter to the Motor. Save the Prop Adapter for reuse later, but discard the existing bolts and washers. See Figure 5.
Step 6 Remove the Motor/Drive assembly from the mounting bracket by removing the (4) bolts and star washers holding the Motor/Drive to the brackets. Motor/Drive assembly, make sure to support it while removing bolts so it does not fall and damage the fan housing or Motor/Drive. See Figure 6. If you were instructed by Munters office to send the old Motor/Drive back to the office, repack it in the box that new Motor/Drive came in to send back.

Step 7 Carefully lift Motor/Drive into place and secure in place using (4) Bolts [A]. Tighten Bolts to 60 in-lbs. [6.8 Nm] of torque. See Figure 7.
Step 8 Attach the Prop Adapter removed in Step 5 to new Motor/Drive using (4) new Bolts [A]. Tighten Bolts to 60 in-lbs. [6.8 Nm] of torque. See Figure 8.

Step 9 Reinstall propeller onto the reinstalled Prop Adapter, replacing the key removed in Step 5. Tighten the Set Screw to 80 in-lbs. [9.0 Nm] of torque. See Figure 9.
Step 10 Loosen the (4) captured screws in the Munters Drive Box cover to access the drive terminals. Reconnect the 3 phase power and the control wires per the note or photo taken in Step 3. See Figure 10. If needed refer to Chapter 3, Page 24, Atlas 74 wiring section for wiring options.
Step 11 Reinstall the bottom cone section and outlet guard to the fan and cone. See Figure 11.
Step 12 Reinstall the shutter in the back of the fan and secure in place with the shutter clips. See Figure 12. Reconnect the power to the fan and make sure the fan operates properly.

MD2 Replacement for CX74 Fan

Step 13 Disconnect power from fan before continuing. Remove the front and rear guards from the fan and set safely aside to be reinstalled later. See Figure 13.
Step 14 Loosen the (4) captured screws in the Munters Drive Box cover to access the drive wiring. Make a note of or taking a photo of the wiring. Disconnect 3 phase power and the control wires from the drive from the and from the box. Then replace the cover. See Figure 14.
Step 15 Loosen the Set Screw holding the propeller to the shaft. Carefully remove the propeller from the fan and set safely aside to be reinstalled later. A gear puller or prop puller may need to be used. See Figure 15. Remove Key from Prop Adapter and keep with prop to be reused later.
Step 16 Remove the (4) Bolts and Star Washers holding the Prop Adapter to the Motor. Save the Prop Adapter for reuse later, but discard the existing bolts and washers. See Figure 16.
Step 17 Remove the Motor/Drive assembly from the mounting bracket by removing the (4) bolts and star washers holding the Motor/Drive to the brackets. Motor/Drive assembly, make sure to support it while removing bolts so it does not fall and damage the fan housing or Motor/Drive. See Figure 17. If you were instructed by Munters office to send the old Motor/Drive back to the office, repack it in the box that new Motor/Drive came in to send back.
Step 18 Carefully lift Motor/Drive into place and secure in place using (4) Bolts [A]. Tighten Bolts to 60 in-lbs. [6.8 Nm] of torque. See Figure 18.
Step 19 Attach the Prop Adapter removed in Step 16 to new Motor/Drive using (4) new Bolts [A]. Tighten Bolts to 60 in-lbs. [6.8 Nm] of torque. See Figure 19.
Step 20 Reinstall propeller onto the reinstalled Prop Adapter, replacing the key removed in Step 5. Tighten the Set Screw to 80 in-lbs. [9.0 Nm] of torque. See Figure 20.
Step 21 Loosen the (4) captured screws in the Munters Drive Box cover to access the drive terminals. Reconnect the 3 phase power and the control wires per the note or photo taken in Step 3. See Figure 21. If needed refer to Chapter 3, Page 27, CX74 wiring section for wiring options. If the guards were removed in Step 13, reinstall them at this time.

Electrical Wiring

Atlas 74 GA500 Drive Wiring

Reconnect the 3 phase power to the drive as shown in Figure 22. Then using Figures 23 – 29, rewire the control terminals as they were previously wired.

Three Phase Power connection:

Run the 3 phase power cable through watertight fitting into the Munters Drive box and connect to the terminals “R/L1, S/L2, T/L3” and Ground in the box. See Figure 22. The Munters Drive is prewired to the Motor.

NOTE Power to the Drive must be within -4%, +8% of nominal voltage.

Munters Recommended;

Absolute Minimum Voltage = 440V
Absolute Maximum Voltage = 500V

Munters Recommends Line to Line

Voltage Unbalance to be 1% or less per NEMA MG-1-1998. Absolute maximum unbalance is 1.5%.

Fan Operation with No Control – GA500

To operate the fan continuously with no control, provide a Jumper wires between terminals ‘S1’ and ‘SN’. See Figure 23. Do not remove the Factory Installed Jumpers.

Fan Operation On/Off with Control – GA500

To operate the fan On/Off with a control, wire an ‘ON’ command from the ‘SN’ terminal to the input relay in the control and from the output of the control relay to the ‘S1’ terminal. See Figure 24. Do not remove the Factory Installed Jumpers.

Fan Operation Off/Low/High – GA500

To operate the fan Off/Low/High with a control, connect a wire from ‘SN’ terminal to the input side of the ‘ON’ relay in the control, then install a jumper from the input side of the ‘ON’ relay to the input side of the ‘LOW’ relay in the control. Then connect a wire from ‘S1’ terminal to the output side of the ‘ON’ relay and then connect a wire from the ‘S7’ terminal to the ouput side of the ‘LOW’ relay. See Figure 25. Do not remove the Factory Installed Jumper.

Fan Operation Off/Variable with 10-0V Signal – GA500

To operate the fan Off/Variable with a 10-0V Signal, wire an ‘ON’ command from the ’SN’ terminal to the input relay in the control and from the output of the control relay to the ‘S1’ terminal. Then connect wires from the 10-0V output in the control to the ‘A1’ and ‘AC’ terminals in the Munters Drive Box. The ‘+’ output in the control shoud go to ‘A1’ and the ‘ – ‘ output should go to ‘AC’. See Figure 26. Do not remove the Factory Installed Jumpers.

Fan Operation Off/Variable with Potentiometer – GA500

To operate the fan Off/Variable with a signal from a potemtiometer, wire an ‘ON’ command from the ’SN’ terminal to the input relay in the control and from the output of the control relay to the ‘S1’ terminal. Then connect wires from the Potentiometer as follows, connect ‘ – ‘ to ‘AC’, connect ‘L’ to ‘A1’ and connect ‘+’ to ‘V’. See Figure 27. Do not remove the Factory Installed Jumpers.

Alarm Connections – GA500

The Munters Drive uses a Normally Closed circuit for alarm connections. To connect a control to the Normally Closed output make appropriate connecions from the control to ‘MB’ and ‘MC’ terminals. See Figure 28. Do not remove the Factory Installed Jumbers.

CX74 Drive Wiring Determining Drive type for wiring

To access the Drive, loosen the (4) screws in the cover of the Munters Drive box to access the terminals inside to connect power and other cables. If your drive looks like Figure 29A, then proceed to the wiring section starting on Page 28. See Figure 29A. If your drive looks like Figure 29B, then proceed to the wiring section starting on Page 31. See Figure 29B.

Three Phase Power connection – V1000:

Run the 3 phase power cable through watertight fitting into the Munters Drive box and connect to the terminals “R/L1, S/L2, T/L3” and Ground in the box. See Figure 30. The Munters Drive is prewired to the Motor.

NOTE Power to the Drive must be within -4%, +8% of nominal voltage.

Munters Recommended;

Absolute Minimum Voltage = 440V
Absolute Maximum Voltage = 500V

Munters Recommends Line to Line

Voltage Unbalance to be 1% or less per NEMA MG-1-1998. Absolute maximum unbalance is 1.5%.

Fan Operation with No Control – V1000

To operate the fan continuously with no control, provide a Jumper wires between terminals ‘S1’ and ‘SC’. See Figure 31. Do not remove the Factory Installed Jumper.

Fan Operation On/Off with Control – V1000

To operate the fan On/Off with a control, wire an ‘ON’ command from the ‘SC’ terminal to the input relay in the control and from the output of the control relay to the ‘S1’ terminal. See Figure 32. Do not remove the Factory Installed Jumper.

Fan Operation Off/Low/High – V1000

To operate the fan Off/Low/High with a control, connect a wire from ‘SC’ terminal to the input side of the ‘ON’ relay in the control, then install a jumper from the input side of the ‘ON’ relay to the input side of the ‘LOW’ relay in the control. Then connect a wire from ‘S1’ terminal to the output side of the ‘ON’ relay and then connect a wire from the ‘S7’ terminal to the ouput side of the ‘LOW’ relay. See Figure 33. Do not remove the Factory Installed Jumper.

Fan Operation Off/Variable with 10-0V Signal – V1000

To operate the fan Off/Variable with a 10-0V Signal, wire an ‘ON’ command from the ’SC’ terminal to the input relay in the control and from the output of the control relay to the ‘S1’ terminal. Then connect wires from the 10-0V output in the control to the ‘A1’ and ‘AC’ terminals in the Munters Drive Box. The ‘+’ output in the control shoud go to ‘A1’ and the ‘ – ‘ output should go to ‘AC’. See Figure 34. Do not remove the Factory Installed Jumpers.

Fan Operation Off/Variable with Potentiometer – V1000

To operate the fan Off/Variable with a signal from a potemtiometer, wire an ‘ON’ command from the ’SC’ terminal to the input relay in the control and from the output of the control relay to the ‘S1’ terminal. Then connect wires from the Potentiometer as follows, connect ‘ – ‘ to ‘AC’, connect ‘L’ to ‘A1’ and connect ‘+’ to ‘+V’. See Figure 35. Do not remove the Factory Installed Jumpers.

Alarm Connections – V1000

Three Phase Power connection – GA500:

Run the 3 phase power cable through watertight fitting into the Munters Drive box and connect to the terminals “R/L1, S/L2, T/L3” and Ground in the box. See Figure 37. The Munters Drive is prewired to the Motor.

NOTE Power to the Drive must be within -4%, +8% of nominal voltage.

Munters Recommended;

Absolute Minimum Voltage = 440V

Absolute Maximum Voltage = 500V

Munters Recommends Line to Line

Voltage Unbalance to be 1% or less per NEMA MG-1-1998. Absolute maximum unbalance is 1.5%.

Fan Operation with No Control – GA500

To operate the fan continuously with no control, provide a Jumper wires between terminals ‘S1’ and ‘SN’. See Figure 38. Do not remove the Factory Installed Jumpers.

Fan Operation On/Off with Control – GA500

Fan Operation Off/Low/High – GA500

Fan Operation Off/Variable with 10-0V Signal – GA500

Fan Operation Off/Variable with Potentiometer – GA500

Alarm Connections – GA500

Troubleshooting

CONTACT INFORMATION

Munters Drive replacement kit 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

www.munters.us
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

FAQs

Q: What should I do if I notice shipping damage on the equipment?
- A: Any shipping damage should be reported immediately to your freight carrier as it is the customer’s responsibility.

Documents / Resources

Munters MD2-ATS7443-HO Motor and Controller Replacement Kit [pdf] Instruction Manual
MD2-ATS7443-HO Motor and Controller Replacement Kit, MD2-ATS7443-HO, Motor and Controller Replacement Kit, Controller Replacement Kit

References

User Manual

Munters MD2-ATS7443-HO Motor and Controller Replacement Kit

Specifications

PRODUCT INFORMATION

Unpacking the Equipment

Installation Instructions

Electrical Wiring

Troubleshooting

CONTACT INFORMATION

FAQs

Documents / Resources

References

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