Munters CX24 User manual

1© Munters Corporation, May 2020 QM1108r0
Instruction Manual
CX24 Circulation Fan - 24"
Fan Models: CX24P1 • CX24P3 • CX24P1G • CX24P3G
CX
Circulation Fan
with or without
Guard
24” Fan
CX24P1/CX24P3
CX24P1G/CX24P3G
*Patents Pending

© Munters Corporation, May 2020
2QM1108r0
CX24 Circulation Fan 24” Fans
Instructions for Use and Maintenance
Thank You:
Thank you for purchasing a Munters CX Circulation Fan. 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.

3© Munters Corporation, May 2020 QM1108r0
Index
Chapters Page
1. Unpacking the Equipment 4
1.1 Parts List 4
1.2 Fan Dimensions 5
2. Installation Instructions 6
2.1 Fan Installation 6
2.2 Optional Guard Installation 7
3. Electrical Wiring 8
4. Operation 10
5. Maintenance 11
6. Troubleshooting 12
7. Exploded View and Parts List 13

© Munters Corporation, May 2020
4QM1108r0
1.1 Parts List
Unpacking the Equipment 1.
[A]
[B]
Each CX24P1/CX24P3 Fan includes:
1 – Direct Drive Circulation Fan
Each CX24P1G/CX24P3G Fan with Guard includes:
1 – Direct Drive Circulation Fan
1 – Guard, Inlet/Outlet Pair, PWDCTD
1 – Hardware Package as follows:
HP1246 – Fan with Guard
ID Qty. Cat. No. Description
[A] 4 KS0650 1⁄4”-20 x ⁷⁄₈” Truss Head Bolt, SS
[B] 8 KN1705 1⁄4”-20 Hex, Nylock Nut, ZP
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.

5© Munters Corporation, May 2020 QM1108r0
1.2 Fan Dimensions
Unpacking the EquipmentChapter 1
CX24 Circulation Fan
Fan Specifications:
Hertz: 60 50 - 60
Voltage: 115/230VAC or 190 - 208-230/380 - 460VAC
Phase: 1 or 3
CAT.
NO.
FAN
DIA.
NO. OF
BLADES ABC
D - Dia.
(O.D.)
CX24 24” 3 303⁄4”12
7⁄8”8 1⁄4”24 3⁄4”
D - Dia.
A
B
C

© Munters Corporation, May 2020
6QM1108r0
Installation Instructions 2.
2.1 Fan Installation
Figure 1A
Chain (not provided)
Step 1
For Horizontal Airflow attach chain to 2 of the Eye Bolts on the fan and then hang the fan from truss.
See Figure 1A. Chain and hanging hardware not provided. If it is desired to pull the fan up out of the
way when not in use for cleaning, then attach a cable or rope to the Lift Bracket and use a winch or
actuator to pull the fan up. See Figure 1B.
Figure 2
Eye Bolt
Chain (not provided)
Eye Bolt
Step 2
For Vertical Airflow attach chain to 4 of the Eye Bolts on
the fan and then hang the fan from trusses.
See Figure 2.
Chain and hanging hardware not provided.
Figure 1B
Chain (not provided)
Cable or Rope
(not provided)
Lift Bracket
If installing fans near heaters, it is
recommended to install the CX24 Fan at a
location far enough from heaters that will
give a maximum temperature of 150°F.
This should be approximately 2-3 ft. from
the heater.
IMPORTANT
!

7© Munters Corporation, May 2020 QM1108r0
Installation InstructionsChapter 2
Step 3
The Inlet Guard is the one with the large inner hole to go over the motor. With the eyelets on the guard
pointing into the fan slip the eyelets over the shaft of the Eye Bolts and fasten using (4) Nuts [B].
See Figure 3.
Figure 3
Inlet Guard
Nut [B]
Shaft of Eye Bolt
2.2 Optional Guard Installation
Figure 4
Step 4
The Outlet Guard is the one with the small inner hole. With the eyelets on the guard pointing toward the fan,
align the eyelets with the holes in orifice on the outside of the fasten using (4) Bolts [A] and Nuts [B]. The
head of the bolt goes on the inside of the orifice and the nut goes on the outside.
See Figure 4.
Outlet Guard
Nut [B]
Bolt [A]
Nut [B]
Bolt [A]

© Munters Corporation, May 2020
8QM1108r0
Electrical Wiring 3.
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 5A. 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 5B.
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.
NOTE: A safety cut-off switch should be located adjacent to each fan.
Figure 5A
Single Phase - Motor Overload Protection with Disconnect
(SY2000 or Equivalent)
120 or 240 VAC
Power Supply for
Fan
L1 (H)
L2 (N)
G
T1 (H)
T2 (N)
G
120 or 240 VAC
Power Out
to Fan
L1 (H)
L2 (N)
T1 (H)
T2 (N)
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.
Three Phase
Power Supply for
Fan
L1
L2
G
T1
T2
G
Three Phase
Power Out
to Fan Motor
L1
L2
T1
T2
L3 T3
L3 T3
Figure 5B
Three Phase - Motor Overload Protection with Disconnect
Safety cut-off
switch
Motor Starter
Circuit Breaker Switch

9© Munters Corporation, May 2020 QM1108r0
Three Phase Fans:
1) The use of a quality frequency drive and the installation of line reactors is recommended to
reduce voltage spikes and harmonic distortion.
2) Minimum operating frequency of 30 Hz.
3) Will require three pole contractors with overload protection (by others).
As the power cable exits the back of motor form a drip loop and then run power cable up along leg of
motor mount and "Zip" tie the cable to leg to prevent cable from getting tangled.
See Figure 6. Then run
the cable out the back of fan to the circuit breaker or control panel.
Figure 6
3.1 Recommended Wire Routing:
Electrical WiringChapter 3

© Munters Corporation, May 2020
10 QM1108r0
Operation 4.
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.
ADJUSTMENTS: Set the fan control to the temperature shown on your ventilations system
drawing, or to a value which will provide the desired environmental conditions.
Single Phase Fans: When variable speed controls are used, the fan's idle speed will need
to be set to the recommended minimum airflow rate. Refer to the procedures included with
each control. The table below provides airflow rates at various propeller speeds for fans
wired for 240 VAC.
4.1 Operation
WARNING
!
Disconnect Power
Before Servicing
WARNING
!
Moving Parts, Disconnect
Power Before Servicing.
WARNING
!
Do Not Power Wash
Electrical Devices.

11© Munters Corporation, May 2020 QM1108r0
Maintenance 5.
5.1 Maintenance
The following inspection and cleaning procedures should be performed monthly:
1) INSPECT PROPELLER: Check that propeller is secure on motor shaft 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.
• 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!
WARNING
!
Disconnect Power
Before Servicing
WARNING
!
Moving Parts, Disconnect
Power Before Servicing.
WARNING
!
Do Not Power Wash
Electrical Devices.

© Munters Corporation, May 2020
12 QM1108r0
Troubleshooting 6.
6.1 Troubleshooting
Fan Operating-
Insufficient
Airflow
Excessive
Vibration
Excessive Noise
1. Fan control set above room
temperature
2. Blown fuse or open circuit breaker
3. Propeller blade contacting fan housing
4. Fan control defective
5. Motor defective
1. Variable speed control improperly
adjusted
2. Guard dirty
1. Propeller blade contacting fan housing
2. Motor bearing defective
3. Frequency drive improperly adjusted
1. Motor loose on mount
2. Propeller damaged
3. Motor shaft bent
1. Set to a lower temperature
2. Replace fuse or reset breaker
3. Realign motor in fan housing
4. Repair or replace control
5. Repair or replace motor
1. See Operation, Step 2 for adjustment guidelines
2. Clean guard
1. Sand fan housing to remove high spot
2. Repair or replace motor bearings
3. See operation, Step 2 for adjustments guidelines
1. Tighten fasteners
2. Replace propeller
3. Repair or replace motor
Fan Not Operating
SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION
Fan never turns off 1. Override thermostat set incorrectly
2. Control set for continuous operation
1. Set to the correct temperature
2. Set speed control correctly
WARNING
!
Disconnect Power
Before Servicing
WARNING
!
Moving Parts, Disconnect
Power Before Servicing.

13© Munters Corporation, May 2020 QM1108r0
1
2
3
4
6
7
8
1
10
11
5
9
12
13
Exploded View 7.
Item Catalog No
.
Description Qty.
1 FH1624 Guard Inlet/Outlet Pair, PWDR CTD (Guard Kit) 1
2 FP1724 Propeller, 24”DD, 3-Blade, CX24, GZ 1
3 FH4224 Orifice Panel, 24" CX Fan, PL 1
4 KS2757 ¼"-20 x 2.5" Closed Eye Bolt, SS 4
5 KW3012 ¼" x 1" O.D. Flat Washer, SS 2
6 KS1029 ⁵⁄₁₆"-18 x 1.75" Hex Head Bolt, SS 1
7 FH2524 Motor Mount, 24" CX Fan, PWDR CTD 1
8 KN1705 ¼"-20 Nylock Nut, SS (Fan/Guard Kit) 4/8
9 FM1108
FM1074
24” DD, Motor, ¹⁄₃ HP, 1075 RPM, 48 Fr., 1 ph., 115/230V
24” DD, Motor, ¹⁄₃ HP, 1140 RPM, 48 Fr., 3 ph., 230/460V
1
10 KW3004 ⁵⁄₁₆" Narrow Type-A Flat Washer, SS 2
11 KN0704 ⁵⁄₁₆"-18 Hex, Serrated Flange Nut, SS 1
12 FH1324 Lift Bracket, 2 Point Conn,CX24 Fan, PWDR CTD 1
13 KS0650 1⁄4”-20 x ⁷⁄₈” Truss Head Bolt, SS (Guard Kit) 4

© Munters Corporation, May 2020
14 QM1108r0
Munters Europe AB, Isafjordsgatan 1, P.O. Box 1150, SE-164 26 Kista, Sweden. Phone [phone], Fax [phone].
Munters Corporation 2691 Ena Drive Lansing, MI 48917 U.S.A. Phone [phone], Fax [phone]
www.munters.us
Australia Munters Pty Limited, Phone [phone], Brazil Munters Brasil Industria e Comercio Ltda, Phone [phone], Canada/US Munters
Corporation Lansing, MI Phone [phone], China Munters Air Treatment Equipment (Beijing) Co. Ltd, Phone [phone], Denmark Munters A/S,
Phone [phone], India Munters India, Phone [phone], Indonesia Munters, Phone [phone], Italy Munters Italy S.p.A., Chiusavecchia,
Phone [phone], Japan Munters K.K., Phone [phone], Korea Munters Korea Co. Ltd., Phone [phone], Mexico Munters Mexico, Phone
[phone], Russia Munters AB, Phone [phone], Singapore Munters Pte Ltd., Phone [phone], South Africa and Sub-Sahara Countries
Munters (Pty) Ltd., Phone [phone], Spain Munters Spain S.A., Phone [phone], Sweden Munters AB, Phone [phone], Thailand
Munters Co. Ltd., Phone [phone], Turkey Munters Form Endüstri Sistemleri A.Ş, Phone [phone], USA Munters Corporation Lansing, MI Phone
[phone], Vietnam Munters Vietnam, Phone [phone], Export & Other countries Munters Italy S.p.A., Chiusavecchia Phone [phone]
'CX' Fans are developed and produced by Munters Corporation, Lansing, Michigan U.S.A. 1-800-227-2376