Munters ATLAS 74 Instruction Manual Download Page 23

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QM1095r1

Troubleshooting

Fan Operating-
Insu

ﬃ

cient

Air

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

1. Shutter jammed or dirty
2. Guard dirty
3. Frequency drive improperly adjusted

4. Incorrect Belt Tension/worn belt

1. Propeller blade contacting fan housing
2. Motor bearing or shaft bearing defective

3. Frequency drive improperly adjusted

1. Motor loose on mount
2. Propeller damaged

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. Unjam and clean shutter
2. Clean guard
3. See operation, Step 2 for adjustments guidelines

4. See Maintenance Section, Belt Tensioning

1. Sand fan housing to remove high spot
2. Repair or replace motor or shaft bearings

3. See operation, Step 2 for adjustments guidelines

1. Tighten fasteners
2. Replace propeller
3. Repair or replace motor or propeller shaft

Fan Not Operating

SYMPTOM

POSSIBLE CAUSES

CORRECTIVE ACTION

7.1 Troubleshooting

WARNING

High Voltage, disconnect

power before servicing.

WARNING

Moving parts, disconnect

power before servicing.

WARNING

Moving parts, disconnect

power before servicing.

Summary of Contents for ATLAS 74

Page 1: ...1 Munters Corporation July 2021 QM1095r1 Instruction Manual ATLAS 74 Fan Models ATS743F3CT E ATS743F3CT P Munters ATLAS 74 74 Exhaust Fan ...

Page 2: ...nstructions 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 ins...

Page 3: ... 1 3 Fan Spacing 6 7 2 Installation Instructions 8 12 2 1 Installation 8 2 2 Cone Installation 11 2 3 PT Shutter 14 2 4 Shutter Wind Kit 15 16 3 Electrical Wiring 17 4 Operation 19 5 Maintenance 20 21 6 Winterizing 22 6 1 Winterizing 22 6 2 Winter Weather Protection 22 7 Troubleshooting 23 8 Exploded View and Parts List 24 25 ...

Page 4: ...3011 5 16 x 1 O D Flat Washer SS 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 Each FH1890 Optional Lift Bracket includes 1 Left Lift...

Page 5: ...an Speciﬁcations Hertz 60 Voltage 208 240 480VAC Phase 3 Hertz 50 Voltage 190 380VAC Phase 3 Weight 400 lbs 182 Kg FAN DIA A B C D E F G H J K Dia WALL OPENING I D framed 74 51 2 211 2 441 2 89 89 137 8 353 4 603 16 2 853 8 85 W 85 H FRONT VIEW SIDE VIEW H F J K Dia A A D B A E D A B C B B C G 4 ...

Page 6: ...an requires clear space from the mounging flange so the Shutter Clips have room to rotate to allow the shutter to be removed and reinstalled in the fan without interference Also the sides of the fan also require 3 clearance for the Wind Kit Bracket to be installed If the fans are to be installed side by side with the Wind Kit Brackets adjacent to each other the minimum fan spacing is 98 Center to ...

Page 7: ...pter 1 Elevation View Top View 93 Center to Center 93 Center to Center 3 If the fans are to be installed closer then the Wind Kit Brakcet for one fan should be offset 6 up or down from the previous fan then the minimum fan spacing is 93 Center to Center See Figure Below ...

Page 8: ...on Page 5 The frame should be constructed of 4x4 Treated Posts or double 2x Treated Studs 2 fans can fit between Columns that are 20 O C and 3 fans can fit between Columns that are 25 or 30 O C See Figure 1A 1B and 1C H See Chart on Page 5 Building Column Concrete Stem Wall Building Columns 20 0 O C 4x4 Post or 2x Treated Framing W See Chart on Page 5 H See Chart on Page 5 Building Column Concrete...

Page 9: ... C Step 2 An optional Lift Bracket Kit is available to be able to lift fan into the framed opening If Lift Bracket Kit was purchased attach each Lift Bracket to Bearing Bracket and Strut using 4 Bolts D and Nuts E See Figure 2 Once fan has been installed in wall Lift Bracket can be removed and installed in next fan for installation Bolt D Left Lift Bracket Nut E Bearing Bracket Right Lift Bracket ...

Page 10: ...hing around opening tight to fan and caulk around fan to seal Figure 3B Wall Framing 2 Minimum Framing for fan Bottom Wall Opening See Chart on Page 5 4 Minimum Framing for fan Top and Sides Wall Framing Figure 3A OUTSIDE INSIDE Mounting Screw Bolt not provided Step 3B If fan needs to be mounted so that shutter does not stick into building then frame fan as shown in Figure 3B Top and sides require...

Page 11: ...ots in the next cone section A mallet may be needed to seat slots over tabs completely See Figure 4B Repeat this step until all 4 cone sections are connected and laying flat 2 2 Cone Installation Figure 4B Step 5A Fasten each of the joints in the single outer hole using 1 Bolt A and Nut B with the nut on the side with the tabs At the inner pair of holes of each joint fasten using 1 Bolt A and Nut ...

Page 12: ...ut B with nut on inside of cone At the inner pair of holes fasten using 1 Bolt A and Nut B with bolt head on inside of cone See Figure 5B Leave all bolts and nuts loose at this time Bolt A Nut B Bolt A Nut B Step 6 Install cone onto fan by putting cone over fan orifice and line up inner holes of cone with holes in fan orifice Fasten cone to fan orifice using 12 Bolt A Washer C and Nut B with bolt ...

Page 13: ...en with Nut B Secure 8 remaining eyelets using Bolt A and Nut B See Figure 8 Figure 8 Step 7 Find the 2 Guard Sections and line the 2 of them up with the eyelets both facing the same direction Then secure the guard sections together by wrapping the wire loop on each guard section around center wire of opposite guard section See Figure 7 Figure 7 Wire Loop Bolt A Nut B Previously installed Bolt and...

Page 14: ...ps over the shutter flanges See Figure 10 Figure 10 2 3 PT Shutter Installation Fixed Bottom Shutter Clip Note PT Shutter extends into room 2 5 16 from back of fan Step 9 Insert PT Shutter into fan by sliding the bottom flange of shutter into bottom shutter clips and pressing shutter inward See Figure 9 Position to install remove Shutter Position to hold Shutter in place ...

Page 15: ...fan The opening in the U slot should be facing up and each Bracket should be mounted in same direction See Figure 11A Fasten Brackets in place using 2 Lag Screws not provided See Figure 11B Installation Instructions Chapter 2 3 3 3 3 Figure 11A Figure 11B Lag Screw not provided Wind Kit Bracket 2 4 Shutter Wind Kit Installation ...

Page 16: ...hapter 2 Step 12 Slide the Wind Kit Pipe into the hole in the Left Wind Kit Bracket until it stops at the other side of the Bracket and set Pipe down into slot in opposite Bracket See Figure 12A For the completed Wind Kit installation See Figure 12B Figure 12A Figure 12B ...

Page 17: ...le motor starter or slow blow motor fuses must be used See Figure 13B 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 r...

Page 18: ...motor form a drip loop and then run power cable down along strut and Zip tie the cable to strut to prevent cable from getting tangled in the pulley or belt See Figure 14 Then run the cable out the drain hole to the circuit breaker or control panel Continued on next page Figure 14 3 1 Recommended Wire Routing ...

Page 19: ... value which will provide the desired environmental conditions 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 4 1 Operation WARNING Disconnect Power Before Servicing WARNING Mov...

Page 20: ...oth 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 d...

Page 21: ...lure 8 BELT TENSIONING Check condition of belt if worn replace belt If belt is in good condition then make sure the tensioner is in the correct position Looking from the inlet of the fan the correct position of the tensioner is approximately the 2 o clock position See Figure 15A To adjust the tensioner loosen the 10mm bolt fastening the tensioner to the motor base using 17mm end wrench to allow te...

Page 22: ...f building roof weather protection must be provided A weather shelter may be constructed to cover the entire fan See Figure 16 or snow guards may be placed on the roof See Figure 17 Building Wall Provide Weather Shelter Over Fans 6 Min Fan with Discharge Cone Figure 16 Snow Guards located per manufacturers recommendations Ceiling Figure 17 Note Snow guards are designed to prevent sudden dangerous ...

Page 23: ...maged 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 Unjam and clean shutter 2 Clean guard 3 See operation Step 2 for adjustments guidelines 4 See Maintenance Section Belt Tensioning 1 Sand fan housing to remove high spot 2 Repair or replace motor or shaft bearings 3 See operation Step 2 for adjust...

Page 24: ... Munters Corporation July 2021 24 QM1095r1 ü ü ü ü ü ü ü ü ü ü ü Exploded View 8 ...

Page 25: ...x 1 63 CL Set Screws FTNG CI 2 9 FH2880 FH2880 Bearing Mount Bracket 74 Fan GZ 1 10 FM1063 FM1063 Motor 3HP 1765 RPM 182FR 3PH 230V 460V 60Hz 1 11 FH2878 FH2878 BD Motor Base Bracket 74 Fan GZ 1 12 FH1441 FH1441 V Belt 79 A Section POLYSTR CORD 1 13 FH2185 FH2185 Sheave A section 1 Bore w keyseat Prop CI 1 14 FH2020 FH2183 Sheave A section 1 Bore w keyseat Motor CI 1 15 FH2402K FH2402K Belt Tensio...

Page 26: ... 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...

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