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Model 8WSSC

- For use w/ shaded pole and PSC motors.

• Rated for 220 - 240V, 8 Amp

• UL Listed

• Requires 2x4 handy box

Model 10WSSC

- For use w/ shaded pole and PSC motors.

• Rated for 115 - 127V, 10 Amp • UL Listed
• Requires 4x4 handy box

Airflow Troubleshooting

Blower Unit

Symptom

Possible Cause

Solution

Blower fails

Blown fuse or open circuit breaker

Replace fuse or reset circuit breaker and

to operate

check amps

Defective motor or capacitor

Replace

Motor starter overloaded

Reset starter and check amps

Motor overamps

CFMs too high

Check CFMs

Static pressures are higher or lower

If higher, ductwork should be improved

than design

If lower, fan RPMs should be lower

Blower rotation is incorrect

Check rotation and correct

Motor voltage incorrect

Check motor nameplate and supplied voltage

Motor horsepower too low

See specifications and catalog for fan
curves to determine if horsepower is sufficient

Shorted windings in motor

Replace motor

Insufficient airflow

Mixing box damper not fully open

Adjust damper linkage or replace
damper motor

System static pressure too high

Improve ductwork to eliminate losses
using good duct practices

Blower speed too low

Check for correct RPMs with catalog data

Mixing box dampers closed

Open and adjust

Dirty or clogged filters

Clean or replace

Leaks in ductwork

Repair

Elbows, or other obstructions

Correct or improve ductwork

may restrict fan outlet

Too much airflow

Blower fan speed too high

Check for correct fan RPM

Filter(s) not in place

Install filters

Insufficient static pressure (SP)

Induce SP into system ductwork

(airflow resistance)

Excessive noise

Wheel rubbing on housing

Center wheel

or vibration

Loose wheel on shaft

Tighten wheel setscrew

Loose motor or blower sheave

Tighten sheave setscrew

Motor base or blower loose

Tighten mountings bolts

Motor out of balance

Replace

Wheel out of balance

Replace or rebalance

Accumulation of material on wheel

Clean wheel and housing

FULL VOLTAGE

120 VAC

BLACK

SPEED CONTROL

WHITE

VARIABLE

VOLTAGE

FAN

AUX

DEVICE

SWITCHED FULL VOLTAGE

Dotted line indicates

for use with 10W

switch only.

RED

Содержание VFCD

Страница 1: ...ction or servicing Failure to comply with this safety precaution could result in serious injury or death Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operating and maintenance instructions thoroughly before installing or servicing this equipment READ AND SAVE THESE INSTRUCTIONS Installation Operation and Maintena...

Страница 2: ... a field supplied base as shown in Figure 2 An optional Greenheck supplied 6 inch extended base may be used when mounting as shown in Figure 3 The VFCD is available with both external neoprene and spring isolation options 2 1 Fan Section 2 Coil Section Chilled Water or DX Coils Hot Water or Steam Coils 3 Inlet Filter Vertical inlet filter with 1 4 turn fasteners Removed for internal viewing 4 Side...

Страница 3: ...3 26 55 8 2400 52 34 28 29 23 26 55 8 3000 52 50 28 45 22 327 8 103 8 Unit Size Fan w Drain Pan Row 1 Row 2 Row 4 Row 6 Row 8 Row 10 2 in Vertical Filter 4 in Vertical Filter Fan Motor Total 600 235 60 295 38 51 77 106 135 8 13 800 240 60 300 38 51 77 106 135 8 13 1300 260 60 320 38 51 77 106 135 164 8 13 1600 300 60 360 51 70 110 152 195 238 11 17 2000 350 75 425 58 80 127 175 225 275 12 19 2400 ...

Страница 4: ... capped off All dimensions are in inches 0 25 Vent and Drain Supplied Right Side Connection Shown 0 25 Vent and Drain Supplied Right Side Connection Shown Right Side Connection Shown Size A B C D 600 20 00 22 50 22 63 0 875 800 20 00 22 50 22 63 0 875 1300 24 00 27 50 22 63 0 875 1600 24 75 27 25 22 63 0 875 2000 24 75 27 50 25 13 0 875 2400 24 75 27 50 25 13 0 875 3000 28 75 31 25 22 63 1 375 A 6...

Страница 5: ...let Airflow Cap Inlet C B A D 1 5 in E 2 in 3 in 0 75 in 1 in Outlet Drain Connection 3 75 in Size A B C D E F 4 Row 6 Row 8 Row 4 Row 6 Row 8 Row 600 3 38 3 29 3 21 6 63 8 71 10 79 20 00 22 50 22 63 0 875 800 3 38 3 29 3 21 6 63 8 71 10 79 20 00 22 50 22 63 0 875 1300 3 38 3 29 3 21 6 63 8 71 10 79 24 00 27 50 22 63 0 875 1600 3 38 3 29 3 21 6 63 8 71 10 79 24 75 27 25 22 63 0 875 2000 3 38 3 29 ...

Страница 6: ...ost accurate way to measure the air volume is by using the pitot traverse method in the ductwork away from the blower Other methods can be used but should be proven and accurate To adjust the air volume change the fan rpm or the system losses See Troubleshooting section in this guide 5 Measure Motor Voltage Amperage and Fan rpm All access doors must be installed Measure and record the input voltag...

Страница 7: ...icient airflow Mixing box damper not fully open Adjust damper linkage or replace damper motor System static pressure too high Improve ductwork to eliminate losses using good duct practices Blower speed too low Check for correct RPMs with catalog data Mixing box dampers closed Open and adjust Dirty or clogged filters Clean or replace Leaks in ductwork Repair Elbows or other obstructions Correct or ...

Страница 8: ... TIMES IS HIGHLY RECOMMENDED 5 Pipe sizes for the system must be selected on the basis of the head pressure available from the circulation pump Piping should be in accordance with accepted industry standards 6 For chilled water coils the condensate drain pipe should be sized adequately to ensure the condensate drains properly See DRAIN PAN TRAPS and Figure 4 Direct Expansion DX Coils 1 Piping shou...

Страница 9: ...cturer s recommendations Be certain that the required pressure differential will always be available DO NOT UNDERSIZE 2 Float and thermostatic or bucket traps are recommended for low pressure steam On high pressure systems bucket traps are normally recommended The thermostatic traps should be used only for air venting 3 Bucket traps are recommended for use with on off control only 4 Locate traps a...

Страница 10: ...hable filters are installed they can be washed in warm soapy water An adhesive spray can be applied to increase filter efficiency If disposable filters are installed check by holding up to a light source If light cannot pass through the filter it should be replaced Replacement filters should be of the same manufacturer and size When reinstalling filters be sure to install with the airflow in the c...

Страница 11: ...s necessary to prevent this build up from plugging the drain and causing the drain pan to overflow Inspect twice a year to avoid the possibility of overflow Also drain pans should be kept clean to prevent the spread of disease Cleaning should be performed by qualified personnel Winterizing Coils Coil freeze up can be caused by such things as air stratification and failure of outdoor air dampers an...

Страница 12: ...ECK P O BOX 410 SCHOFIELD WISCONSIN 54476 0410 PH 715 359 6171 www greenheck com Model VFCD IOM 468361 Rev 1 September 2005 Copyright 2005 Greenheck Fan Corp Job Information Job Name ________________________________________ Address __________________________________________ City ________________ State ________ Zip __________ Phone __________________ Fax ____________________ Contact Person ________...

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Greenheck VFCD, Инструкция по установке, эксплуатации и обслуживанию

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