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5.0 MAINTENANCE

5.6 PULLEY ALIGNMENT

1.) Insert one end of the string inside the gap between belt and pulley.

2.) Rotate the pulley so that string is clipped between the pulley and the belt.

3.) Pull the other end of the string as per Figure 5.6.

4.) Inspect for any gap between the string and pulley at A and B.

5.) If any gap was found, then adjust either pulley to make the gap as small as possible.

6.) Repeat steps 1, 2, 3, 4 and 5 for bottom of the same side, top and bottom of the other side.

(As shown as Figure 5.7)

Figure 5.6:

5.7 BELT TENSION INSPECTION GUIDE

1.) Measure the belt span (See Figure 5.7).

2.) Position of the “O” ring on the span scale at the measure belt.

3.) Set the “O” ring on the deflection force scale to zero.

4.) Place the tension meter squarely on the belt at the belt span. Apply a force on the plunger

and perpendicular to the belt span until the bottom of the “O” ring even the top of the next
belt or with the bottom of a straight edge laid across the sheaves.

5.) Remove the tension meter and read the force applied from the bottom of the “O” ring on

the deflection force scale.

Содержание R22 WCPS-B Series

Страница 1: ...Form No MM0214A MM0215A Water Cooled Air Conditioner Single Package with Scoll Compressors Products That Perform By People Who Care 50 60 Hz R22 R407C WCPS B Series...

Страница 2: ...COOLING TOWER 13 Figure 3 8A Cooling Tower Water Piping Schematic 14 Figure 3 8B Unit Control On Water Flow 14 Figure 3 8C Alternate Unit Control On Water Flow 14 4 0 OPERATION 4 1 SYSTEMS CAPACITY 15...

Страница 3: ...ser s which enable economical and easier cleaning of condenser inner water tubes by brushes instead of by chemical cleaning for co axial tubes in tube condenser The shell and tubes condenser also has...

Страница 4: ...h the unit are 1 Compressor s complete with rubber mounting grommet 2 Shell and tubes condenser s 3 Evaporator complete with thermal expansion valve s 4 Manual reset high and low pressureswitch for ea...

Страница 5: ...on the unit which will scratch the paint work damage the panels and framework Avoid possible surface damage by not removing the packaging material until the unit is at or near the final location and s...

Страница 6: ...r is generally required as the vibration transmitted from the units casing will not adversely effect the surrounding In extreme cases when it is necessary to completely isolate any vibration from the...

Страница 7: ...s are not weatherised for outdoor installation For installation demanding extreme quiet operation locate WCPS B air conditioner outside conditioned space with both supply and return air ducts connecte...

Страница 8: ...charge duct For removal of top panels if necessary 4 Side with piping connection unless otherwise specified condenser inlet and outlet connections and condensate connection are located on right side o...

Страница 9: ...drumming at discharge duct For removal of the panels if necessary 4 Side with piping connection 36 For proper piping connection and access to valve fittings strainer thermometer pressure gauges flow s...

Страница 10: ...yout and select the type of blower discharge pattern to suit the ductwork direction which will minimize noise and vibration The selected blower discharge pattern should be specified in the purchase or...

Страница 11: ...3 0 INSTALLATION FIGURE 3 5 1 BLOWER DISCHARGE PATTERN 1 WCPS 68B to 570B PATTERN NO 1 PATTERN NO 2 PATTERN NO 3 PATTERN NO 4 2 WCPS 640B to 1520B PATTERN NO 1 PATTERN NO 2 PATTERN NO 3 PATTERN NO 4...

Страница 12: ...nnections 4 Filters are located at the return airside refer to table for quantities and sizes It can be taken out for servicing by removing one side of the filter holding frame 5 Fans rpm shall be sel...

Страница 13: ...8 COOLING TOWER Where water costs are high or water is not plentiful an outdoor or indoor forced or induced draft cooling tower is recommended for condenser water Cooling towers must be selected for t...

Страница 14: ...pump motor also starts the tower fan After the pump is started manually it will continue to operate until the stop button is pushed This arrangement is suggested where there will be a long run of cond...

Страница 15: ...uld not be below 58 psig Equivalent to 32 F saturated suction temperature Operating the unit with excessively high airflow can create noise and vibration and cause moisture carry over Low pressure tri...

Страница 16: ...al load in the system by means of injecting hot gas into the inlet of the distributor This would prevent the suction pressure from falling below the desired settings and thus causing frequent compress...

Страница 17: ...X Valve 4 Brass Distributor 5 Pressure Equalization for TX Valve 6 Insulated Suction Piping 7 Uninsulated Liquid Piping 8 Suction Access Valve Charging Valve 9 Compressor 10 Moisture Indicator Sight G...

Страница 18: ...ORS COMPRESSOR START COMPRESSOR RUN POSITION AND POWER SUPPLY CHECK ALL SWITCHES TO AUTO SAFETY INTERLOCK OVERLOAD RELAY KEY SWITCH AND SWITCHES AND TIME CONTROL OVERLOAD RELAY SAFETY INTERLOCKING OKA...

Страница 19: ...stalled C ELECTRICAL WIRING 1 Power supply available 2 Wiring completed from supply to fused disconnect to starter to compressor motors 3 Filed wiring installed from starter to compressors evaporator...

Страница 20: ...4 0 OPERATION 4 11 TYPICAL WIRING SCHEMATIC WITHOUT STARTER 4 12 TYPICAL WIRING SCHEMATIC WITH DOL...

Страница 21: ...4 0 OPERATION 4 13 TYPICAL WIRING SCHEMATIC WITH AUTOTRANS...

Страница 22: ...or s and drive s shaft s and bearing s for each unit If excessive vibration or noise is noticeable take necessary appropriate actions to repair or remedy faults 3 Clean the filters and wipe down exter...

Страница 23: ...the header end and brush cleaned the condenser Refer Vessel Maintenance 3 Clean the complete cooling tower flush the condenser cooling tower water circuit fill up with clean water purge the circuit o...

Страница 24: ...gured or otherwise deteriorated New gaskets are available from the factory INSPECT CAREFULLY 5 3 3 TUBE REPLACEMENT If your water cooled condenser ever experience a tube failure the tube can be replac...

Страница 25: ...same side top and bottom of the other side As shown as Figure 5 7 Figure 5 6 5 7 BELT TENSION INSPECTION GUIDE 1 Measure the belt span See Figure 5 7 2 Position of the O ring on the span scale at the...

Страница 26: ...utes the tension should be checked and readjusted to a higher value if necessary Table 5 7A Belt Span Lt cm Deflection Td cm 25 30 31 36 37 42 0 4 0 5 0 6 43 48 49 54 55 60 0 7 0 8 0 9 61 66 67 72 55...

Страница 27: ...THE THERMO VALVE CLEAN OR REPAIR EXPANSION VALVE CLEAN EVAPORATOR COIL NOISY OPERATION COMPRESSOR EVAPORATOR FAN SHIPPING OR MOUNTING BOLTS LIQUID REFRIGE RANT BACKING UP UNLOOSENED BOLTS UNREMOVED S...

Страница 28: ...OR AIR INLET TEMPERATURE REPAIR OR REPLACE THE THERMOSTAT SEE HIGH DISCHARGE PRESSURE OR LOW SUCTION PRESSURE INSULATE AND REPAIR DUCT FULLY OPEN THE VALVE CHECK COOLING TOWER OPERATION PURGE AND REMO...

Страница 29: ...SSOR REPLACE COMPRESSOR OBTAIN CORRECT VOLTAGE RECONNECT POWER LINE REPAIR OR REPLACE THE COMPONENTS REPLACE THE CONTACTOR REPAIR OR REPLACE THE CONTACTOR REPAIR OR REPLACE THE CONTACTOR ADJUST TO COR...

Страница 30: ...SUPERHEAT SAT SUCT SUCT TEMP 4 RETURN AIR TEMP DB WB SUPPLY AIR TEMP DB WB AIR VOLUME CONDENSER WATER INLET TEMP CONDENSER WATER OUTLET TEMP 1 2 3 COMPRESSOR AMPS 4 EVAPORATOR FAN AMPS VOLTS This log...

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