Dunham-Bush ACDX Installation, Operation And Maintenance Instructions Download Page 27 | Manualshive

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TYPICAL OPTIONS WIRING (ACDX120A)

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Summary of Contents for ACDX

Page 1: ...ctions 6 ACDX Operation Start up 6 7 Maintenance 7 Slide Valve Unloading Operation 8 Low Ambient Operation 9 Fan Position Numbers 10 Fan Cycling Sequence 11 ACDX Sequence of Operation 12 Electrical Co...

Page 2: ...rs attention to the instructions contained herein it will give To use this manual effectively you must first identify your unit model from the unit nameplate It is assumed the user of this manual and...

Page 3: ...eration Weight 3592 4732 5044 7712 9684 10726 MODEL SIZE 150 170 185 210 235 255 Compressor Model Qty SSCA060 3 SSCA075 3 SSCA060 4 SSCA075 4 SSCA060 1 SSCA060 2 SSCA075 2 SSCA075 2 Displ CFH Compr 72...

Page 4: ...cables or other moving equipment are placed so as to avoid damage to the unit or piping The refrigerant Under certain critical conditions it may be necessary to piping must not be used as a ladder or...

Page 5: ...microcomputer controlled units conjunction with a spring loaded bypass regulating valve as shown in Figure 1B The bypass valve must be set to Water Quality ACDX Coolers used in these packages are ass...

Page 6: ...5 TYPICAL CHILLED WATER PIPING TYPICAL MULTIPLE PACKAGED CHILLED WATER CONNECTIONS PARALLEL FLOW PARALLEL FLOW SERIES FLOW...

Page 7: ...ump temperature must be at a The unit is ready for start up when the following procedures representative This will ensure that the oil is warm have been completed enough to vaporize any dissolved refr...

Page 8: ...Compressor Models SSCB use DB Karlube 21 Oil Contact factory for price The above listed oils are synthetic lubricants of the Polyol Ester POE type Due to the complex nature of the POE great precaution...

Page 9: ...en or close UL 1 and UL 2 in response to the supply water temperature The slide valve will move to the left loading by force of discharge pressure whenever UL 1 opens to permit flow to the oil return...

Page 10: ...ell as that portion of the surface rejecting heat by natural convection with related fans off To further assist low ambient starts all fans are held off until the head pressure reaches 190 psig This a...

Page 11: ...C1 1 3 5 7 9 11 C2 2 4 6 8 10 12 150 1 2 150 3 C1 1 3 5 7 9 11 13 15 C3 C2 2 4 6 8 10 12 14 16 Front Rear 170 1 2 170 3 185 1 2 185 3 C1 1 3 5 7 9 11 13 15 17 C3 C2 2 4 6 8 10 12 14 16 18 Front Rear...

Page 12: ...1 RH 2 4 6 8 10 12 1 LH 1 3 5 7 9 11 2 LH RH 13 14 15 16 17 18 Rear Module 185 1 RH 2 4 6 8 10 12 1 LH 1 3 5 7 9 11 2 LH RH 13 14 15 16 17 18 Rear Module 210 1 LH 1 3 5 7 9 Rear Module 1 RH 2 4 6 8 1...

Page 13: ...M1 1 opens to de energize oil light is not on disconnect the main power and reverse sump heater 1HTR and switch 1M1 2 closes to any two phase legs at the Main Incoming Power activate the fan control c...

Page 14: ...ed Compressor No 2 will not be able to restart for five minutes due to integral time delays SAFETY CONTROLS The unit is protected by the following safety controls 8 Water Flow Switch FLS 1 High Pressu...

Page 15: ...occurs temperature during the compressor off when ambient temperature is below 40EF cycle preventing refrigerant migration in 3TAS is measuring ambient temperature to the crankcase and consequent and...

Page 16: ...ges 27 1TAS Motor Overload Protection Compressor overload protection is 1 Unit Control Contact Unit on off control should be provided by a solid state device 1TAS done through the terminals shown on t...

Page 17: ...ps Electrically Programmable Read Only an NC25 microcomputer system The computer Memory store general operating procedures system is composed of a main microcomputer algorithms and is the same for all...

Page 18: ...nce midnight and the accumulated run time during yesterdays Y twenty four hour period CYC gives the number of times that the control point cycled off since midnight If a feedback digital input is asso...

Page 19: ...then new calibration would be 58 60 3 1 3 3 3 So the zero calibration should be changed to 3 1 You must be authorized See Section 3 4 2 Select DATE TIME SET on the main menu Press ENTER to display cur...

Page 20: ...r start delay 7 Power loss reset 8 Anti recycle timing 9 Low pressure safety 19 11 Freeze safety 12 High Oil Temp Safety 13 Alarm Output 14 Fan control 15 Chilled water reset and customer control inte...

Page 21: ...rough 4 for each compressor number manual control DO NOT start a compressor 7 Add the value obtained in step 5 to the amps calculation A setpoint value from step 6 NOTE All compressors will revert bac...

Page 22: ...rator pressure of a given Sample Ramp Times Minutes For a Two pressure B setpoint a time delay is initiated If Compressor Unit with a 2 Second Compressor the pressure stays below the setpoint during t...

Page 23: ...ow normal compressor control if the unit schedule is calling for unit operation that a compressor auxiliary contact digital input stays ON for 15 seconds when the computer is commanding the compressor...

Page 24: ...e pressed after the problem is resolved HOLD state If the discharge pressure 4 23 Low Chiller Flow Alarm A low flow alarm will be generated if a compressor control point is ON and the flow switch digi...

Page 25: ...TYPICAL POWER WIRING ACDX120A...

Page 26: ...TYPICAL CONTROL WIRING ACDX120A...

Page 27: ...TYPICAL OPTIONS WIRING ACDX120A...

Page 28: ...TYPICAL CONTROL WIRING ACDX120B W MICRO...

Page 29: ...TYPICAL CONTROL WIRING ACDX120B W MICRO...

Page 30: ...TYPICAL OPTIONS WIRING ACDX120B W MICRO...

Page 31: ...5 472 12 1 5 5 9 400 3 4 1120 9 3 460 257 350 75 2 98 539 180 12 1 5 3 0 400 3 4 1120 9 3 150 230 570 700 60 3 152 1228 409 16 1 5 5 9 600 5 0 1120 9 3 208 632 800 60 3 171 1228 409 16 1 5 5 9 600 5 0...

Page 32: ...Cooler Model Curve No Min GPM Max GPM 040 CHSO10601B 1 78 315 050 CHS011601B 1 86 315 060 CHS013601B 2 101 420 080 EXD14102J09 3 140 440 095 EXD16112J09 4 175 519 120 EXD16122J07 5 236 697 150 EXT181...

Page 33: ......

Page 34: ...ACDX AUDX CONDENSER CLEARANCE...

Page 35: ......

Page 36: ...ACDX LOAD POINTS...

Page 37: ...ACDX RUBBER IN SHEAR ISOLATOR...

Page 38: ...ACDX SPRING ISOLATOR...

Page 39: ...AUDX LOAD POINTS...

Page 40: ...AUDX RUBBER IN SHEAR ISOLATOR...

Page 41: ...AUDX SPRING ISOLATOR...

Page 42: ...4 Clean the condenser 5 Compressor discharge check valve not operating 5 Replace if necessary properly 6 Fans not running 6 Check pressure control setting condenser pressure exceeds saturated pressure...

Page 43: ...Start Up a Open compressor discharge service valve if supplied b Open liquid valve s c Open suction and discharge valves to pressure gauges if supplied d Check rotation of all fan motors e Start auxi...

Page 44: ...101 Burgess Road Harrisonburg VA 22801 PH 540 434 0711 FAX 540 434 4595 Printed in U S A I O 6193A Issued 9 98...

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