Temtrol SERIES ITF Instruction Manual Download Page 36

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PROBLEM

PROBABLE CAUSE

SOLUTION

TROUBLE SHOOTING GUIDES

ELECTRIC HEATING COILS

Regulation

thermostats, are in the correct location and that

all controls are adjusted according to manufacturer's

specifications for existing field conditions.

Check air system balance to see that correct amount

of air flow is supplied for proper zone control.

Automatic thermal cutout may be opening (cycling)

before room thermostat is satisfied. (see "Electric

Heater Cycles". Insufficient heat may be caused by:

1. Open heat limiter(s) or thermal cutout

2. Incorrect supply voltage

3. Heater too small (in wattage) for application

Summary of Contents for SERIES ITF

Page 1: ...S ITF AIR HANDLERS OUTDOOR MOUNTED AIR HANDLING UNITS O ITF 07 INSTRUCTION MANUAL INSTALLATION START UP OPERATION MAINTENANCE INSPECTION TEMTROL INC Okarche OK Phone 405 263 7286 Fax 405 263 4924 Manufacturers of Air Conditioning Heating Ventilation and Heat Transfer Products ...

Page 2: ...or other work loss of refrigerant components supplied by others defects in parts resulting from neglect negligence accident fire explosion high or low voltage jumpering or jamming controls improper or contaminated fuel excessive or inadequate fuel pressure frozen heating coils war or any acts of God This warranty is void if equipment is misapplied or if any alterations are made to the basic design...

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Page 4: ...ieces 2 Set and level first segment Set and level next segment 3 Bolt lifting roof lugs together on the exterior of the unit 4 Install Internal Demount Covers as shown 5 Rooftop Only See Weatherproofing Roof Top Demount Seams detail 6 Repeat the above for each additional segment Lifting Lug Roof Lug IDC IDC 1 x 4 Internal Demount Cover Factory Pre insulated Gasketed IDC Insulation IDC 1 4 x3 4 Gas...

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Page 10: ... charges will not be recognized by Temtrol Inc B STORAGE 1 Should storage of unit be required caution should be taken to set unit relatively level and in clean location to protect motor bearings coils filters and etc from excessive dust Also avoid storage in location where children play and or public access Air handling units should not be used as on site storage for other mechanical trades If uni...

Page 11: ... and expense during start up and initial service warranty period 2 Lifting brackets are provided on the sides of the unit and equal tension of cables at each bracket is essential for weight distribution and safety Rigging cables should be as long as the longest unit piece dimension at corners to prevent stress on assembly 3 Roof curbs where required must be installed square and level Curb should b...

Page 12: ...furnished coil must be protected from freeze damage by means of anti freeze liquids or heaters 6 Condensate drain lines inside or to roof from pan must be pitched and include a water seal or trap to prevent the passage of air into or out of the unit via the drain in the field by the contractor Intermediate pans for coils more than one high include downspouts to main pan A minimum of 2 x S P trap i...

Page 13: ... the exterior of the unit using factory furnished hex head bolt 05 13 x 6 5 2 0 5 washers 05 hex nut plus 0 5 lock washer 4 Bolt roof lugs together on the exterior of the unit using factory furnished Hex head bolt 0 375 16 x 1 5 2 0 375 washers 0375 16 hex nut plus 0 375 lock washer 5 Caulk demount seam 6 Install internal demount covers IDC a IDC Insulation b IDC x gasket c IDC Fastener 7 See Weat...

Page 14: ...t using the two screws provided 2 Bend the starter leg along the natural fold until it touches the standing seam as indicated in Fig 1 3 Attach the cap as indicated in Fig 2 See ITF Demount Instructions detail for complete instructions on assembly of a demount prior page item 7 Larger Drawings Located In The Manual ...

Page 15: ...pped wire end into matching wire connector If wire connector is IT model remove rubber plugs to access set screws Once wire is inserted torque set screw to torque shown on drawing Install rubber access plugs and secure with electrical tape Note Wires must be torqued and insulated stripped as shown The wire insulation on a properly installed wire must be inside the insulated connector conductor por...

Page 16: ...ition of bevelled flange or handle on inside Access door gasketing must not be removable or leakage of air and water could result 4 Check motor mounting to make sure all nuts are tight Confirm that the motor voltage phase and HP size are compatible with wiring Motor nameplate amperage is maximum All electrical connections should be tight complete and properly terminated 5 Supply and return air duc...

Page 17: ...unit heaters are provided check thermostat settings to insure freeze protection 12 Supply and return fan drives are provided in the mid speed adjustment range when variable speed sheaves are furnished The motor sheave pitch diameter is field adjustable for the required air flow When final adjustments are complete the current draw of the motor should be checked and compared to full load amperage ra...

Page 18: ...e after Normal operation of bearings are cool or warm to touch High bearing temperature accompanied by excessive leakage of grease indicates too much grease High temperature with no grease showing at the seals particularly if the bearing seams noisy indicates too little grease If running discloses an excessive amount of grease in the bearings the grease fittings should be removed until the excess ...

Page 19: ...ctions PRE START 1 Remove shipping lock down bolts See drawing on inside Supply Fan access door 2 Check fan wheel set screws for tightness and motor and fan sheave for proper alignment 3 Manually rotate fan wheels and motors to assure freedom of movement 4 Check main supply voltage 5 Check electrical connections for tightness 6 Check main fan amp draw Refer to motor nameplate 7 Check condensate dr...

Page 20: ...Fan 1 _________________ amps Return Fan 2 __________________ rpm Return Fan 2 _________________ amps 6 Record unit External Static Pressure esp and Total Static Pressure tsp Supply fan 1 ___________________ esp Supply Fan 1 _________________ tsp Supply fan 2 ___________________ esp Supply Fan 2 _________________ tsp Return fan 1 ___________________ esp Return Fan 1 _________________ tsp Return fan...

Page 21: ...Over 210 degrees F Clean Weekly Any Speed Up to 150 degrees F Dirty Daily to 2 wks Any Speed Over 150 degrees F Dirty Daily to 2 wks Any Speed Any Temperature Very Dirty Daily to 2 wks Any Speed Any Temperature Extreme Cond Daily to 2 wks Add grease slowly with shaft rotating until a slight bead forms at the seals Start Up performed by ______________________________ Date ______________ Notes _____...

Page 22: ...d for debris in birdscreen and or obstructions to air flow such as old boxes new walls or fences etc around unit Clean or remove as required 8 WATER COILS Heating and Cooling if not antifreeze protected or heater protected should be drained as thoroughly as possible and then treated in the following manner Fill each coil independently with an antifreeze solution using a small circulating pump and ...

Page 23: ...e of air flow and or damage rotating fan and motor parts Do not operate media beyond its rated capacities before change out or blow out damage can result 12 CASING AND ACCESS DOORS should be checked for leakage air and or water Door gasket must be in proper alignment and if damaged should be replaced Inside access panels must be latched properly to avoid air recirculation Door Adjustment All adjus...

Page 24: ...lly disconnect power to the lights are provided at all unit entry points to equipment where lights are located 1 United States Environmental Protection Agency A Brief Guide to Mold Moisture and your Home Brochure EPA 402 K 02 003 WARNING Equipment Damage And Personal Safety Risk From Ultraviolet UV Lights Temtrol does not recommend field installation of ultraviolet lights in its air handling equip...

Page 25: ... unit If replacement parts are required state date of installation of unit date of start up and date of failure along with an explanation of the malfunction and a description of the replacement parts required Goods may not be returned except by permission of authorized factory officials of TEMTROL INC at Okarche Oklahoma and when so returned will be subject to a handling charge and transportation ...

Page 26: ...ain plugs OITF 0411 Top and or bottom casings OITF 0412 Electric heating OITF 0413 COIL SYSTEMS Special Integral Face By pass Heating OITF 0501 Reclaim wheel OITF 0502 Reclaim gas type OITF 0503 Reclaim fluid run around type OITF 0504 HUMIDIFIER Humidifier Steam OITF 0601 Water spray OITF 0602 Humidifier pan w drain OITF 0603 FILTER RACKS Prefilter OITF 0701 2nd filter OITF 0702 Final filter OITF ...

Page 27: ...DRAWING NUMBER SERIAL NUMBER PART NUMBER JOB SYMBOL MODEL NUMBER DRAWING NUMBER SERIAL NUMBER PART NUMBER Temtrol Inc Okarche OK Manufacturers of Air Conditioning Heating Ventilation and Heat Transfer Products INFORMATION COVERING AIR HANDLERS ROOF MOUNTED O ITF 07 ...

Page 28: ... any maintenance or inspection make certain that all power has been disconnected Adequate precautions should be taken to safeguard the equipment and the premises from damage also the public from possible injury as appropriate for the installation of these products SPEED TEMPERATURE CLEANLINESS 100 RPM Up to 120 degrees F Clean 500 RPM Up to 150 degrees F Clean 1000 RPM Up to 180 degrees F Clean 15...

Page 29: ...Temtrol Inc Phone 405 263 7286 Fax 405 263 4924 Trouble Shooting ...

Page 30: ...Belts too tight d Variable pitch sheaves not adjusted so each groove has same pitch dia multi belt drives e Misaligned sheaves f Belts worn g Isolation base shipping restraints not removed h Belts oily or dirty Bearing a Defective bearing b Needs Lubrication c Loose on bearing supports d Loose on shaft e Seals misaligned f Foreign material inside bearing g Worn bearing h Fretting corrosion between...

Page 31: ...Pulsation or Surge a Restricted system causes fan to operate at poor point of rating b Fan too large for application c Ducts vibrate at same frequency as fan pulsations Rattles and or Rumbles a Vibrating duct work b Vibrating cabinet parts c Vibrating parts not isolated from building CFM Low Insufficient Fan a Mecanical volume control device is improperly set Air Flow b Fan running backwards c Cut...

Page 32: ...on near fan outlet Air Stream b Sharp elbows near fan outlet c Improperly designed turning vanes d Projections dampers or other obstructions in part of system where air velocity is high CFM High Too Much System a Oversized duct work Air Flow b Access door open c Registers or grilles not installed d Damper set to by pass coils e Filter s none in place f System resistance much lower than anticipated...

Page 33: ...installed backwards HP will be high b Fan speed too high Static Pressure Low System a Fan inlet and or outlet conditions not same as tested CFM Low Static Pressure High System a Obstruction in system CFM Low b Dirty filters c Dirty coils d System too restricted HP High Fan a Backward inclined impeller installed backwards b Fan speed too high c Too low system resistance for forward curved fan Syste...

Page 34: ...UTION TROUBLE SHOOTING GUIDES FANS e Impeller touching scroll f Wrong voltage g Motor too small and overload protector has broken circuit h Optional thermostats firestats freezestats may lockout fan operation if set incorrectly ...

Page 35: ...verheating occurred Correct cause of overheating and replace heat limiter Check main fuses if open correct cause of failure before replacing fuses Electric Heater Cycles Electrical or Mechanical Check air inlet and discharge openings for obstructions Will Not Stay On See that filters are not clogged fire dampers are open and air system is balanced Check to see that the heater terminal box is tight...

Page 36: ...ifications for existing field conditions Check air system balance to see that correct amount of air flow is supplied for proper zone control Automatic thermal cutout may be opening cycling before room thermostat is satisfied see Electric Heater Cycles Insufficient heat may be caused by 1 Open heat limiter s or thermal cutout 2 Incorrect supply voltage 3 Heater too small in wattage for application ...

Page 37: ...place thermostat 6 Faulty magnetic valve 6 Replace valve or magnetic head 7 High gas pressure 7 Max gas pressure 8 oz or 14 W C Venter Motor Will Not 1 No power to unit 1 Turn on power check supply fuses or circuit breaker Start RPV Models 2 No 24 volt power to venter 2 Turn up thermostat check control transformer output relay Check for loose or improper wire connections 3 Venter relay defective 3...

Page 38: ... air proving switch proving switch Pilot Lights Main Valve 1 Manual valve not open 1 Open manual valve Will Not Open 2 Main valve not operating 2 Spark Ignition System a Defective valve a Replace if 24V is measured at valve connection and valve remains closed b Loose wire connection b Check and tighten all wiring connection 3 G60 does not power main 3 valve a Loose wire connection a Check and tigh...

Page 39: ...ing on blower 5 Adjust belt tension Cold Air is Delivered on 1 Fan control heater element 1 Connect as per wiring diagram inside junction box Start Up During improperly wired cover Operation 2 Defective fan control 2 Replace fan control 3 Incorrect manifold pressure 3 Check manifold and line pressure Motor Will Not Run 1 Circuit open 1 Check wiring and connections 2 Fan control inoperative 2 Repla...

Page 40: ...r Coil b Diverter valve piped wrong Coil Does Not Deliver No steam or hot water Check boiler for proper steam pressure or hot water Adequate Heat temperature setting Thermostat a Thermostat improperly located relocate b Thermostat defective replace c Improper set point reset d Defective controls see above Coil undersized Replace with larger coil Insufficient steam pressure Check boiler controls La...

Page 41: ...e with larger coil Coil Leaks Crack in brazed connection Repair brazed joint Internal corrosion Replace coil Moisture on Walls Excess capicity through Check air flow through coil Downstream of Cooling cooling coil Coil Standing water in drain pan See Condensate Drain Pan Section V A V unit Low Volume Air Verify that the air flow and water flow are synchronized Flow High Volume Water Flow SOLUTION ...

Page 42: ...rain line to drain Check pitch in line towards floor drain is not correctly pitched Trap is sized incorrectly All condensate drain connections and floor drains must be trapped Failure to properly trap a drain will result in flooding of the drain pan and potential water damage to the air handling unit and other building facilities SOLUTION TROUBLE SHOOTING GUIDES CONDENSATE DRAIN PAN ...

Page 43: ...y Check bearings and lubrication Short circuited stator Indicated by blown fuses Motors must be rewound Poor stator coil connection Remove end bells and locate with a test lamp Defective rotor Look for broken bars or end rings Replace rotor Motor overloaded Reduce load or replace unit with larger motor With a 3 phase power source Check line for open phase one phase may be open Defective capacitor ...

Page 44: ...connection s Check connections and tighten where necessary Wrong Rotation Improperly wired to AC line Check wiring diagram on motor nameplate and correct 3 Phase Wrong sequence of phases Reverse any two motor leads at line connection Motor Overheats Motor overloaded Replace with larger motor Temperature Rise Above Ambient Greater Than Motor fan may be clogged with Remove fan cover and clean replac...

Page 45: ...er coupling connect motor to driven equipment Driven equipment unbalanced Balance driven equipment Worn motor bearings Replace bearings and seals Motor 3 phase running on Check for open circuit and correct single phase Bent motor shaft Replace shaft or rotor Rapid Motor Bearing Excessive overhung load Check overhung load retension drive Wear due to over tensioned drive Excessive overhung load Chec...

Page 46: ...belts recommended minimum Replace standard driven sheave with a companion when using standard sheave sheave as a companion sheave Belt misalignment Realign drive with sheave set at mean pitch diameter Belts Turn Over in Grooves Damaged cord section in Replace belts belts Frayed or gouged belts Excessive vibration Tension belts replace belts if damaged Flat idler pulley misaligned Realign idler Wor...

Page 47: ...on Replace belts Loose belts Tension drive Belts improperly tensioned Tension drive with slack of each belt on the same side of the drive Belts too Long at Insufficient take up Use shorter belts Installation Drive improperly set up Recheck driver and driven machine set up Wrong size belts Use correct size belts Belts too Short at Insufficient take up Use longer belts Installation Drive improperly ...

Page 48: ...ing more stretch of some each belt on the same side of the drive belts than others Old belts and new belts used Replace with new belts together on the same drive Different brand name belts Replace with a set of Machine Matched Belts used on same drive Driver and driven shafts Realign drive shifted from parallel Belt cord section damaged Replace belts and install properly during installation Drive ...

Page 49: ...tion Operation And Maintenance Guide Temtrol Inc has a policy of continuous product improvement and reserves the right to change design and specifications without notice Temtrol Inc Manufacturers of Customized Air Handling Units FOR YOUR SAFETY Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operating and maintenanc...

Page 50: ...ligence accident fire explosion high or low voltage jumpering or jamming controls improper or contaminated fuel excessive or inadequate fuel pressure frozen heating coils war or any acts of God This warranty is void if equipment is misapplied or if any alterations are made to the basic design or operating requirements as listed on the original order and shipped from the factory unless approval is ...

Page 51: ...ence regular usage while being exposed to normally humid atmospheric conditions is likely to develop rust in the bearings or rust particles from surrounding surfaces may contaminate the bearings The electrical insulation may absorb an excessive amount of moisture leading to the motor winding failure a A wooden crate shell should be constructed to secure the motor during storage This is similar to ...

Page 52: ...d c If a zipper closing type bag is used instead of the heat sealed type bag zip the bag closed instead of taping it Be sure to place new desiccant inside bag after each monthly inspection d Place the shell over the motor and secure with lag bolts 4 Where motors are mounted to machinery the mounting must be such that the drains and breathers are fully operable and are at the lowest point of the mo...

Page 53: ...duct for this purpose is Exxon Rust Ban 392 8 a Non Regreaseable Motors Non regreasable motors with Do Not Lubricate on the nameplate should have the motor shaft rotated 15 times to redistribute the grease within the bearing every 3 months or more often b All Other Motor Types Before storage the following procedure must be performed 1 Remove the grease drain plug if supplied opposite the grease fi...

Page 54: ...qualified service personnel should install or service air conditioning equipment Untrained personnel can perform basic maintenance such as cleaning and replacing filters All other operations should be performed by trained service personnel 3 When working on air conditioning equipment observe precautions listed in literature tags and labels attached to unit 4 Follow all safety codes Wear safety gla...

Page 55: ...rol side 48 opposite controls 6 bottom 0 If roof curb is provided by others it must be at least 4 high and constructed from non combustible material 3 This unit is designed for installation on a level surface This is especially true if provided with an evaporative cooler 4 Do not locate the supply inlet opening within 10 of any exhaust discharge point or within 24 of any obstruction E INSTALLATION...

Page 56: ...FWR FWT 10 Page 8 Temtrol Inc Manufacturers of Customized Air Handling Units FWR Fanwall Retrofit FWR ...

Page 57: ...x and conduit fitting from J Box see page 11 6 Remove existing fan motor assembly and clean the area thoroughly Figure 1 7 Make sure that floor on air handler is level and rigid 8 Locate and mark inlet for new FWR Array on floor of air handling unit Figure 2 9 Determine offset for the assembled array from inside walls on both sides of the unit and mark accordingly 10 Align first FWR cube bottom ro...

Page 58: ... Array Figure 6 Note Tie off walls and caulking are furnished by others 16 Re assemble air handling unit walls doors safety devices etc removed during retrofit per unit manufacturer s recommendations 17 Wire each FWR motor to overload panel if furnished by Temtrol per wiring diagram Diagram is located inside the motor overload panel lid 18 Prior to connection of main power check Fan Wheel Cone Ali...

Page 59: ...FWR FWT 10 Page 11 Temtrol Inc Manufacturers of Customized Air Handling Units FWR FWT Fanwall Field Retrofit Fanwall Factory Installed FWR FWT ...

Page 60: ... cone See Fan Wheel Cone Alignment section 2 Every Six Months a Check motor bearings for possible binding noise or overheating b Check supply fan and exhaust fan wheels for dirt and grease accumulation Clean as necessary Do not use caustic cleaning solutions 3 Yearly a Lightly lubricate damper bushings and associated linkage Ruskin Back Draft Damper 4 Every Two Years a Examine unit housing for sig...

Page 61: ...nly if applicable Figure 7 3 To remove safety personnel screen Loosen and remove all 4 hex screws from the bolting flange that retain the screen to the fan cartridge framing Figure 8 a b Always disconnect power to the fan control panel before maintenance Follow all lockout and tag out procedures Rotating equipment Always disconnect power to the fan motor before maintenance Fan Control Panel SAFETY...

Page 62: ...llation later 5 Disconnect motor power cable from terminal located in motor J Box and conduit fitting from J Box as shown 6 Mark motor support platform location on the motor mount rail both sides then loosen and remove all 4 hex nuts bolts that retain the motor support platform to the fan cartridge framing See below Motor J Box Step 4 Conduit Fitting Step 5 FWR FWT Hex Head Retaining Nuts Bolts Mo...

Page 63: ...x nut Be sure to measure and or mark location of Trans torque bushing nut on fan shaft Figure 10 Loosen progressively until bushing is free from wheel hub and motor shaft 12 Remove fan wheel hub assembly from motor shaft Trans torque bushing Loosen Turn counter clockwise Tighten Turn clockwise When reinstalling trans torque bushing to hub making sure that the Trans torque bushing nut is flush to t...

Page 64: ...tor pads part K373 Figure 9a slide the motor support platform out a few inches away from inlet wall so that the motor lifting eye is clear of the fan cartridge framing 8a Remove the complete motor support platform with fan wheel motor assembly from fan cartridge 9a To install the complete motor support platform with fan wheel motor assembly into fan cartridge reverse the steps above IMPORTANT Befo...

Page 65: ...djustment loosen do not remove all the cone retaining fasteners Fan Cartridge Framing Inlet Side View Always disconnect power to the fan control panel before maintenance Follow all lockout and tag out procedures Rotating equipment Always disconnect power to the fan motor before maintenance Screws Airflow Straightener Panel Fame Airflow Straightener Panel Airflow Straightener Panel Frame Airflow St...

Page 66: ...nd cone 7 Gently rotate the fan wheel to verify cone adjustment for proper clearance from fan wheel 8 Tighten all the cone retaining fasteners 9 Once again gently rotate the fan wheel to verify cone alignment 10 To install fan wheel cone assembly reverse the steps above Fan Cartridge Framing Gently Rotate Fan Wheel Proper Clearance From Wheel Gently Tap Cone Cone Retaining Fasteners FWR FWT Step 6...

Page 67: ...eformed fan wheel cone 2 First disconnect power to the FWR FWT at the main control panel 3 On the back side frame of the backdraft damper apply gasketing on all four back sides prior to installation Backdraft damper FWT Always disconnect power to the fan control panel before maintenance Follow all lockout and tag out procedures Rotating equipment Always disconnect power to the fan motor before mai...

Page 68: ...amper is installed over airflow straightener panel Do not remove the airflow straightener panel 5 Note the direction of the damper blades The blades should be running vertical as shown in photo Backdraft Damper Airflow Straightener Panel Airflow Straightener Panel FWT FWR Inlet Side Backdraft Damper Inlet Side Fanwall Cube Fanwall Cube Note direction of damper blades Step 4 Step 4 Step 5 ...

Page 69: ...s F MAINTENANCE Con t FBD Backdraft Damper If Applicable 6 Secure the backdraft damper with self tapping hex head fasteners on all sides top left right and bottom 7 To remove backdraft damper reverse the steps above Inlet Side Backdraft Damper Fanwall Cube FWT FWR Step 6 Step 6 ...

Page 70: ...he backdraft damper is installed over Z piece Do not remove the Z piece 5a Note the direction of the damper blades The blades should be running vertical as shown in photo Z Piece No Airflow Straightener Panel FWT FWR Fanwall Cube Backdraft Damper Inlet Side Z Piece No Airflow Straightener Panel Fanwall Cube Backdraft Damper Inlet Side Fanwall Cube Note direction of damper blades Step 4a Step 4a St...

Page 71: ...F MAINTENANCE Con t FBD Backdraft Damper If Applicable 6a Secure the backdraft damper with self tapping hex head fasteners on all sides top left right and bottom 7a To remove backdraft damper reverse the steps above Inlet Side Backdraft Damper Fanwall Cube FWT FWR Step 6a Step 6a ...

Page 72: ... On the inlet side of the fanwall cube the airflow straightener panel frame has 12 pre drilled holes which are located in the corners and middle The pre drilled holes match the pre drilled holes in the blank off plate which are also located in the corners and the middle Blank Off Plate FWR FWT Always disconnect power to the fan control panel before maintenance Follow all lockout and tag out proced...

Page 73: ...tch up the holes in both airflow straightener and the blank off plate it may require a gently tap to set into place Secure it with hex head fastener in the pre drilled holes furnished 10 To remove blank off plate reverse the steps above FWR FWT Fanwall Cube Blank Off Plate Blank Off Plate Inlet Side Inlet Side Step 4 a b Step 4 a b ...

Page 74: ...k that the interior and exterior of the motor is free of dirt oil grease water etc Oily vapor paper pulp textile lint etc can accumulate and block motor ventilation If the motor is not properly ventilated overheating can occur and cause early motor failure 2 Use a Megger periodically to ensure that the integrity of the winding insulation has been maintained Record the Megger readings Immediately i...

Page 75: ...FWR FWT 10 Page 27 Temtrol Inc Manufacturers of Customized Air Handling Units Baldor District Offices www baldor com ...

Page 76: ...lly inspect fanwall fan cube for damage a On Discharge side look for damage to Fans Motors Cells etc b On Inlet side look for damage to inlet straightening grid and frame as well as cells 2 Fan Wheel Motor a Rotate fan wheel by hand to ensure it is properly aligned with inlet cone b Check motor bearings as fan wheel is rotating Bearings should operate freely and be free of noise c Check that shaft...

Page 77: ...ngs temperature amperage 2 Energized a Connect proper input voltage power to line side of panel b Energize incoming power circuit c Check for proper line voltage d Check voltage between all neutral terminations and panel ground should be zero volts e Check internal power supplies for proper voltage output s and adjust as required f Test and verify proper operations of all GFCI devices g Check oper...

Page 78: ...FWT FWR 09 Page 30 Temtrol Inc Manufacturers of Customized Air Handling Units FWT FWR Trouble Shooting FWR FWT ...

Page 79: ...ransformer if faulty Tripped overloads on a Verify overload trip setting is at or slightly motor starters above the motor nameplate fla b Reset overloads and measure operating current of motors c If current values are above nameplate fla go to Motor Failure d Consult Baldor Service Center Motor will not start Usually caused by line trouble a Check source of power Check overloads fuses such as sing...

Page 80: ...motor of greater capacity Single Phasing a Check current at all phases should be approximately equal to isolate and correct the problem Improper ventilation a Check external cooling fan to be sure air is moving properly across cooling fins b Excessive dirt build up on motor Clean motor Unbalanced voltage a Check voltage at all phases should be approximately equal to isolate and correct the problem...

Page 81: ... leaks b Repair any leaks Damaged fan wheel a Visually inspect wheel b Replace fan wheel if necessary Incorrect fan rotation a Check wheel rotation with arrow on fan b Correct rotation if backwards Obstructed inlet a Inspect inlet b Clear inlet Vibration Misalignment a Check and align motor and driven equipment And Noise Misalignment of a Check alignment wheel b Align if necessary Dirty fan wheel ...

Page 82: ...Isolate and eliminate cause of rubbing and stationary parts b See Fan Wheel Cone Alignment Section for adjustment Rotor out of balance a Have rotor balance checked are repaired at your Baldor Service Center Resonance a Tune system or contact your Baldor Service Center for assistance Foreign material in air gap or a Remove rotor and foreign material ventilation openings b Reinstall rotor c Check in...

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