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10

YORK INTERNATIONAL

Rotating Parts

Fan guards must be fitted at all times and not removed
unless the power supply has been isolated. If ductwork
is to be fitted, requiring the wire fan guards to be re-
moved, alternative safety measures must be taken to
protect against the risk of injury from rotating fans.

Sharp Edges

The fins on the air-cooled condenser coils have sharp
metal edges. Reasonable care should be taken when
working in contact with the coils to avoid the risk of
minor abrasions and lacerations. The use of gloves is
recommended.

Refrigerants and Oils

Refrigerants and oils used in the unit are generally non-
toxic, non-flammable and non-corrosive, and pose no
special safety hazards. Use of gloves and safety glasses
are, however, recommended when working on the unit.
The build-up of refrigerant vapor, from a leak for ex-
ample, does pose a risk of asphyxiation in confined or

enclosed spaces, and attention should be given to good
ventilation. For more comprehensive information on
safety precautions for use of refrigerants and oils, refer
to the Materials Safety Data tables provided on pages
11 through 13.

High Temperature and Pressure Cleaning

High temperature and pressure cleaning methods (e.g.
steam cleaning) should not be used on any part of the
pressure system as this may cause operation of the pres-
sure relief device(s). Detergents and solvents which may
cause corrosion should also be avoided.

EMERGENCY SHUTDOWN

In case of emergency, the electrical option panel is fit-
ted with an emergency stop switch CB3 (Circuit Breaker
3), located in the bottom right of the Microprocessor
Panel.  Separate Circuit Breakers, CB1 (System 1) and
CB2 (System 2) can also be used to stop the respective
system in an emergency. When operated, each removes
the electrical supply from the control system, thus shut-
ting down the unit.

General Chiller Information & Safety

Содержание MILLENNIUM YCAS

Страница 1: ...ILLENNIUM TM YCAS AIR COOLED SCREW LIQUID CHILLER YCAS0373 YCAS0653 YCAS 2 SYSTEM With EPROM Standard Brine Metric Models Combined 031 01798 001 YCAS 3 SYSTEM EPROM I O Board EPROM 031 02018 001 031 0...

Страница 2: ...n 26 Unit Nomenclature Nameplate Engineering Data 27 SECTION 3 HANDLINGANDSTORAGE Delivery and Storage 28 Inspection 28 Moving the Chiller 28 SECTION 4 INSTALLATION Location Requirements 29 Outdoor In...

Страница 3: ...sions 70 YCAS0373 YCAS0503 70 YCAS0543 YCAS0623 72 YCAS0653 74 Operating Weights Aluminum Fin Coils 76 Isolator Selection Aluminum Fin Coils 77 Operating Weights Copper Fin Coils 78 Isolator Selection...

Страница 4: ...y 119 4 PRINT KEYS 120 4 1 General 120 4 2 Oper Data Key 120 4 3 Operating Data Local Display Messages 120 4 4 Operating Data Remote Printout 122 4 5 History Key 123 4 6 Fault History Data Local Displ...

Страница 5: ...ront Inside View Wye Delta Start 63 FIG 18 Connection Diagram 64 FIG 19 Detail A 65 FIG 20 Connection Diagram System Wiring 66 FIG 21 Sensor Connection 66 FIG 22 Compressor Systems 1 2 66 FIG 23 Compr...

Страница 6: ...indi vidual shall also be familiar with and comply with all applicable governmental standards and regulations per taining to the task in question SAFETY SYMBOLS The following symbols are used in this...

Страница 7: ...pplicability of these documents to the equip ment in question If there is any question in the mind of operating service personnel as to the applicability of these documents then prior to working on th...

Страница 8: ...ecify the unit model serial number order number and run hours starts These de tails are printed on the unit identification plate The unit warranty will be void if any modification to the unit is carri...

Страница 9: ...the equipment The unit must not be operated outside the design pa rameters specified in this manual Structural Support Structural support of the unit must be provided as indi cated in these instructio...

Страница 10: ...ex ample does pose a risk of asphyxiation in confined or enclosed spaces and attention should be given to good ventilation For more comprehensive information on safety precautions for use of refriger...

Страница 11: ...hat R22 does not represent a carcinogenic hazard to humans Occupational Recommended limit 1000 ppm v v 8 hr TWA 1250 ppm v v 12 hr TWA Exposure Limits Stability Unstable Conditions to Avoid Use in pre...

Страница 12: ...en highly recommended Section 4 PHYSICAL DATA Appearance Clear liquid gray to yellow or light brown tint BoilingPoint 650 F Vapor Pressure 0 01 mmHg 20 C Specific Gravity water 1 0 94 0 97 Volatiles P...

Страница 13: ...atory Protection Use in well ventilated area Ventilation Local exhaust Protective Gloves Strongly recommended especially for prolonged exposure Eye Face Protection Goggles Firefighters should use NIOS...

Страница 14: ...avy gauge galvanized steel All external structural parts are coated with Desert Sand baked on enamel powder paint This provides a finish which when subjected to ASTM B117 500 hour 5 salt spray conditi...

Страница 15: ...backspin due to system refriger ant pressure gradients during shutdown Motor cooling is provided by suction gas from the evapo rator flowing across the motor Redundant overload pro tection is provide...

Страница 16: ...system The de sign working pressure of the economizer is 31 bar 450 PSIG The economizer liquid supply solenoid is acti vated on start up coincident with the liquid line solenoid after pumpdown The eco...

Страница 17: ...slide valve against the spring pressure to provide stable smooth loading Power and Control Panel All controls and motor starting equipment are factory wired and function tested The panel enclosures a...

Страница 18: ...h operating conditions The software is stored in non volatile memory EPROM to eliminate chiller failure due to AC power failure The Programmed Setpoint is stored in lithium battery backed memory Motor...

Страница 19: ...d that a YORK Ser vice Technician or the YORK factory be consulted before changing these settings for any reason since damage to the compressor could result Changes should never be made unless it is v...

Страница 20: ...0 0 1 0 0 0 73 0 1 0 0 1 0 0 1 74 0 1 0 0 1 0 1 0 75 0 1 0 0 1 0 1 1 76 0 1 0 0 1 1 0 0 77 0 1 0 0 1 1 0 1 78 0 1 0 0 1 1 1 0 79 0 1 0 0 1 1 1 1 80 0 1 0 1 0 0 0 0 81 0 1 0 1 0 0 0 1 82 0 1 0 1 0 0 1...

Страница 21: ...0 0 0 1 114 0 1 1 1 0 0 1 0 115 0 1 1 1 0 0 1 1 116 0 1 1 1 0 1 0 0 117 0 1 1 1 0 1 0 1 118 0 1 1 1 0 1 1 0 119 0 1 1 1 0 1 1 1 120 0 1 1 1 1 0 0 0 121 0 1 1 1 1 0 0 1 122 0 1 1 1 1 0 1 0 123 0 1 1 1...

Страница 22: ...1 0 1 1 156 1 0 0 1 1 1 0 0 157 1 0 0 1 1 1 0 1 158 1 0 0 1 1 1 1 0 159 1 0 0 1 1 1 1 1 160 1 0 1 0 0 0 0 0 161 1 0 1 0 0 0 0 1 162 1 0 1 0 0 0 1 0 163 1 0 1 0 0 0 1 1 164 1 0 1 0 0 1 0 0 165 1 0 1 0...

Страница 23: ...0 1 0 0 197 1 1 0 0 0 1 0 1 198 1 1 0 0 0 1 1 0 199 1 1 0 0 0 1 1 1 200 1 1 0 0 1 0 0 0 201 1 1 0 0 1 0 0 1 202 1 1 0 0 1 0 1 0 203 1 1 0 0 1 0 1 1 204 1 1 0 0 1 1 0 0 205 1 1 0 0 1 1 0 1 206 1 1 0 0...

Страница 24: ...rocessor from Terminal 9 The 1TR SYS 1 or 2TR SYS 2 contacts open de energizing 1S SYS 1 or 2S SYS 2 1M SYS 1 or 3M SYS 2 remain energized through interlocking contacts 1M SYS 1 or 3M SYS 2 Opening of...

Страница 25: ...rminal blocks in the power compartments Single Point Power Connection without Circuit Protection A single point supply circuit with field provided protec tion is connected to a factory provided termin...

Страница 26: ...ld mounted Louvered panels and wired guards Louvered pan els mounted over the exterior condenser coil faces and heavy gauge welded wire mesh guards mounted around the bottom of the unit Factory or fie...

Страница 27: ...s Brkr L Ext Handles Individual System Breaker Lockable External Handle 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 3637 POWER FIELD CONTROLS FIELD COMPRESSOR PIPING FIELD M D X M B Y...

Страница 28: ...ECTION Remove any transit packing and inspect the unit to en sure that all components have been delivered and that no damage has occurred during transit If any damage is evident it should be noted on...

Страница 29: ...nd must be at least 120 mm 4 3 4 wide at the contact points This will allow vibra tion isolators to be fitted if required Any ductwork or attenuators fitted to the unit must not have a total static pr...

Страница 30: ...or the cooler must not be ex ceeded at any time Refer to the Tech nical Data Section for details The liquid must enter the cooler by the inlet connection The inlet connection for the cooler is at the...

Страница 31: ...trol system power supply During risk of freezing the control sys tem should be left switched on to provide the freeze protection function unless the liquid systems have been drained Any debris left in...

Страница 32: ...speci fied by local regulations table internal diameter depends on the length of pipe required and is given by the fol lowing formula D5 1 447 x L Where D minimum pipe internal diameter L length of p...

Страница 33: ...re that no eddy currents are set up in the power panel the cables forming each 3 phase power supply must enter via the same cable entry All sources of supply to the unit must be taken via a common poi...

Страница 34: ...se to indicate that a system is running Alarm Contacts Each system has a voltage free change over contact which will operate to signal an alarm condition when ever a system locks out or there is a pow...

Страница 35: ...BREAKERS FIG 8 PANEL LAYOUTS CONTROL PANEL RELAY BOARDS I O EXPANSION BOARD CUSTOMER CONNECTIONS Flow Switch Alarm Run 115VAC supply etc MICROPROCESSOR CIRCUITBOARD 28965A POWER PANELS FANCIRCUIT BRE...

Страница 36: ...Alarm Run 115VAC supply etc MICROPROCESSOR CIRCUITBOARD 28965A CUSTOMER CONNECTIONS Print Temperature PWM Current PWM Flow Switch System No 1 Run System No 2 Run 13 13 13 13 13 14 15 16 17 18 19 23 24...

Страница 37: ...he fan overloads settings are correct for the type of fan fitted Supply Voltage Verify that the site voltage supply corresponds to the unit requirement and is within the limits given in the Tech nical...

Страница 38: ...ion outside of these limits is undesirable and could cause damage Flow Switch Verify a chilled water flow switch is correctly fitted in the customer s pipework on the cooler outlet and wired into the...

Страница 39: ...be replaced by a solid column of liquid Fan Rotation As discharge pressure rises the condenser fans oper ate in stages to control the pressure Verify that the fan operation is correct for the type of...

Страница 40: ...perations are fully automatic After an initial period at minimum capacity on the lead compressor the control system will adjust the unit load depending on the chilled liquid temperature and rate of te...

Страница 41: ...RON NUMBER TEMPERATURE C L S 3 CONDENSER C YCAS MIN 1 MAX 2 MIN MAX MIN MAX 0373 4 4 13 0 9 3 37 8 17 7 51 7 0403 4 4 13 0 10 7 37 8 17 7 51 7 0453 4 4 13 0 11 5 37 8 17 7 51 7 0503 4 4 13 0 11 5 37 8...

Страница 42: ...ch allows for an increase in pressure drop of up to 15 above the design value given above Debris in the water may also cause additional pressure drop When using glycol solutions pressure drops are hig...

Страница 43: ...0373EC 1249 9 38 0403EC 1351 11 38 0453EC 1499 12 47 0503EC 1700 12 47 0543EC 1802 13 47 0573EC 1900 14 47 0623EC 1999 14 47 0653EC 2101 16 47 AIR STANDARD FANS 18 46 ENTERING HIGH PRESS FANS 18 46 C...

Страница 44: ...12 512 512 Condenser Fans Number Ckt 1 Ckt 2 3 3 3 3 3 3 3 3 4 4 4 4 4 4 5 5 Number Ckt 3 Ckt 4 Standard Fans Fan Motor HP kW 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 Fan Motor speed rev sec 15...

Страница 45: ...512 512 512 512 512 512 Condenser Fans Number Ckt 1 Ckt 2 3 3 3 3 3 3 3 3 4 4 4 4 4 4 5 5 Number Ckt 3 Ckt 4 Standard Fans Fan Motor HP kW 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 2 1 6 Fan Motor sp...

Страница 46: ...0 500 2 1 500 3 2 0 400 0543 380 387 400 400 450 2 2 300 2 3 0 250 0573 380 455 600 500 500 2 1 500 3 2 0 400 0623 380 493 600 500 600 2 1 500 3 2 0 400 0653 380 464 600 500 500 2 1 500 3 2 0 400 Mode...

Страница 47: ...4 4 17 1 0573 380 227 250 300 350 1 500 6 AWG 350 2 3 0 250 168 309 979 4 4 4 17 1 0623 380 247 250 300 400 1 500 6 AWG 350 2 3 0 250 183 309 979 4 4 4 17 1 0653 380 232 250 300 350 1 500 6 AWG 350 2...

Страница 48: ...50 150 150 150 150 113 150 105 105 105 105 80 105 MAX AMPS 492 428 259 214 193 171 492 428 259 214 193 171 338 294 178 147 135 118 FAN DATA FANTYPE NOMINAL POWER FULL LOAD AMPS LOCKED ROTOR AMPS kW FL...

Страница 49: ...or lugs which are available per phase Actual wire size and number of wires per phase must be determined based on ampacity and job requirements using N E C wire sizing information The above recommenda...

Страница 50: ...ER SUPPLY WITH INTERNAL UNIT CIRCUIT BREAKERS Suitable for Y D D D D D Start and Across The Line Start LD04107 50 SEE NOTE 2 Optional Field Provided 115 1 MicroPanel Supply Suitable for Y D D D D D St...

Страница 51: ...IT BREAKER LD04109 50 Suitable for Across The Line Start Only SEE NOTE 2 Optional Field Provided 115 1 MicroPanel Supply NOTES 1 Dashed Line indicates Field Provided Wiring 2 The above recommendations...

Страница 52: ...ns on page 55 5 To stop unit Emergency Stop with contacts other than those shown install the stop contact between 5 and 1 If a stop device is not installed a jumper must be connected between terminals...

Страница 53: ...53 YORK INTERNATIONAL FORM 201 18 NM2 WIRING DIAGRAM ACROSS THE LINE START 7...

Страница 54: ...54 YORK INTERNATIONAL FIG 12 CONTINUED ELEMENTARY DIAGRAM Technical Data...

Страница 55: ...ired through motor contactor aux iliary contacts must be sup pressed with YORK P N 031 00808 000 suppressor across the relay contactor coil Any contacts connected to flow switch inputs or BAS inputs o...

Страница 56: ...56 YORK INTERNATIONAL FIG 13 POWER PANEL FRONT INSIDE VIEW ACROSS THE LINE START Technical Data...

Страница 57: ...57 YORK INTERNATIONAL FORM 201 18 NM2 LD03280 FIG 14 ELECTRONIC PANEL FRONT INSIDE VIEW ACROSS THE LINE START 7...

Страница 58: ...ns on page 61 5 To stop unit Emergency Stop with contacts other than those shown install the stop contact between 5 and 1 If a stop device is not installed a jumper must be connected between terminals...

Страница 59: ...59 YORK INTERNATIONAL FORM 201 18 NM2 WIRING DIAGRAM WYE DELTA START LD03229 FIG 15 CONT D 7...

Страница 60: ...60 YORK INTERNATIONAL FIG 15 CONTINUED ELEMENTARY DIAGRAM Technical Data...

Страница 61: ...d through motor contactor aux iliary contacts must be sup pressed with YORK P N 031 00808 000 suppressor across the relay contactor coil Any contacts connected to flow switch inputs or BAS inputs on t...

Страница 62: ...62 YORK INTERNATIONAL FIG 16 POWER PANEL FRONT INSIDE VIEW WYE DELTA START Technical Data...

Страница 63: ...63 YORK INTERNATIONAL FORM 201 18 NM2 LD03280 FIG 17 ELECTRONIC PANEL FRONT INSIDE VIEW WYE DELTA START 7...

Страница 64: ...64 YORK INTERNATIONAL LEGEND FIGS 12 THROUGH 16 LD03281 CONNECTION DIAGRAM ELECTRIC BOX DXST DIRECT DRIVE FIG 18 CONNECTION DIAGRAM Technical Data...

Страница 65: ...65 YORK INTERNATIONAL FORM 201 18 NM2 LD03282 LD03283 LD03284 FIG 19 DETAIL A see pages 54 59 7...

Страница 66: ...66 YORK INTERNATIONAL CONNECTION DIAGRAM SYSTEM WIRING LD03230 LD03231 LD03232 FIG 20 CONNECTION DIAGRAM SYSTEM WIRING FIG 21 SENSOR CONNECTION FIG 22 COMPRESSORS SYSTEMS 1 2 Technical Data...

Страница 67: ...67 YORK INTERNATIONAL FORM 201 18 NM2 COMPRESSOR TERMINAL BOX LD03233 FIG 23 COMPRESSOR TERMINAL BOXES 7...

Страница 68: ...68 YORK INTERNATIONAL FIG 24 DETAIL B Technical Data...

Страница 69: ...69 YORK INTERNATIONAL FORM 201 18 NM2 3 4 5 6 3 4 5 6 7 8 5 6 3 4 7 8 9 10 11 12 9 10 7 8 5 6 3 4 FIG 25 DETAIL C 7...

Страница 70: ...clearances indicated below resulting in unpre dictable air flow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutout...

Страница 71: ...GRAVITY Copper YCAS X Y Z 0373 2331 7 1127 8 960 1 0403 2331 7 1127 8 960 1 0453 2331 7 1135 4 955 0 0503 2331 7 1135 4 955 0 CENTER OF GRAVITY Alum YCAS X Y Z 0373 2324 1 1130 3 889 0 0403 2324 1 11...

Страница 72: ...clearances indicated below resulting in unpre dictable air flow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutout...

Страница 73: ...NTER OF GRAVITY Alum YCAS X Y Z 0543 2717 8 1087 1 914 4 0573 2717 8 1097 3 914 4 0623 2717 8 1097 3 914 4 2718 CENTER OF GRAVITY Copper YCAS X Y Z 0543 2755 9 1092 2 988 1 0573 2753 4 1097 3 988 1 06...

Страница 74: ...indicated below resulting in unpre dictable air flow patterns and possible diminished performance YORK s unit controls will optimize operation without nuisance high pressure safety cutout however the...

Страница 75: ...75 YORK INTERNATIONAL FORM 201 18 NM2 LD03004 CENTER OF GRAVITY Alum YCAS X Y Z 0653 3032 8 1097 3 965 2 CENTER OF GRAVITY Copper YCAS X Y Z 0653 3106 4 1099 8 1041 4 LD03005 7...

Страница 76: ...544 3 1 17 29 7 Purple CP 2 27 1500 680 4 1 06 26 9 Orange CP 2 28 1800 816 4 1 02 25 9 Green CP 2 31 2200 997 9 0 83 21 0 Gray CP 2 32 2600 1179 3 0 74 18 7 White CP 2 35 3000 1360 8 0 70 17 7 Gold A...

Страница 77: ...ACK RED 0453 RED BLACK RED BLACK BLACK RED 0503 RED BLACK RED BLACK BLACK RED 0543 RED BLACK RED BLACK RED BLACK BLACK BLACK 0573 RED BLACK RED BLACK RED BLACK BLACK BLACK 0623 RED BLACK RED BLACK RED...

Страница 78: ...equipment to isolators when used under out door equipment exposed to wind forces 3 Lubricate threads of adjusting bolt Loosen hold down bolts to allow for isolator adjustment 4 Block the equipment 1...

Страница 79: ...D RED 0453 RED RED RED BLACK RED RED 0503 RED RED RED BLACK RED RED 0543 RED BLACK RED BLACK RED BLACK RED RED 0573 RED BLACK RED BLACK RED BLACK RED RED 0623 RED BLACK RED BLACK RED BLACK RED RED 065...

Страница 80: ...3 or RD 3 139 7 85 8 73 2 63 5 12 7 104 8 14 4 6 3 5 5 3 375 2 875 2 5 0 5 4 125 0 563 0 25 R 4 or RD 4 158 7 117 6 69 8 76 2 12 7 127 0 14 4 9 6 6 25 4 625 2 75 3 0 0 5 5 0 0 563 0 375 LD04033 LD0473...

Страница 81: ...1 2 4 1 4 10 1 2 3 4 1000 1628 11NC 5 8 AWMR 2 17 6 3 3 4 1 7 1 2 3 3 4 1 2 7 1 2 5 8 14 1 2 7 1 4 17 7 8 1000 1628 10NC 3 4 AWMR 4 17 8 4 7 8 1 1 4 7 1 2 3 3 4 3 4 7 3 4 3 4 14 1 2 7 1 4 17 7 8 1000...

Страница 82: ...82 YORK INTERNATIONAL ISOLATOR LOCATIONS MODELS YCAS 0373 0403 0453 0503 LD03081 MODELS YCAS 0543 0573 0623 0653 LD03019 FIG 28 ISOLATOR LOCATIONS Technical Data...

Страница 83: ...M 201 18 NM2 1 3 m 48 2 m 72 2 m 72 2 m 72 CLEARANCES Notes No obstructions allowed above the unit Only one adjacent wall may be higher than the unit Adjacent units should be 3 meters 10 feet apart LD...

Страница 84: ...ugh the cooler shell Low pressure vapor enters the compressor where pres sure and superheat are increased High pressure vapor is passed through the oil separator where compressor oil is removed and re...

Страница 85: ...85 YORK INTERNATIONAL FORM 201 18 NM2 PROCESS AND INSTRUMENTATION DIAGRAM LD03486 FIG 31 PROCESS AND INSTRUMENTATION DIAGRAM 7...

Страница 86: ...SURE BOT OIL TEMPERATURE BSP SUCTION PRESSURE CCCV COMPRESSOR CAPACITY CONTROL VALVE ECH CRANK CASE HEATER EEH EVAPORATOR HEATER SHPI HIGH PRESSURE CUT OUT STS SUCTION TEMPERATURE SENSOR RFTS REFRIGER...

Страница 87: ...DEDHOLE OIL HEATER ECONOMIZER GAS IN DISCHARGE CASE OILINLET FROMCONDENSER CODINGCOIL DISCHARGE GAS OUT OILFILTER BLEED EVACUATION POINT OILFILTER COVERPLATE CAPACITY CONTROL SOLENOID CAPACITY CONTROL...

Страница 88: ...88 YORK INTERNATIONAL COMPRESSOR COMPONENTS CONT D FIG 34 COMPRESSOR COMPONENTS LD03669 Technical Data...

Страница 89: ...89 YORK INTERNATIONAL FORM 201 18 NM2 COMPRESSOR COMPONENTS CONT D FIG 35 COMPRESSOR COMPONENTS LD03670 7...

Страница 90: ...90 YORK INTERNATIONAL COMPRESSOR COMPONENTS CONT D FIG 36 COMPRESSOR COMPONENTS LD03671 Technical Data...

Страница 91: ...01 18 NM2 COMPRESSOR COMPONENTS CONT D FIG 37 COMPRESSOR COMPONENTS LD03672 7 O RING MOTOR ROTOR MALE ROTOR LOCKING KEY MALE ROTOR FEMALEROTOR O RING RELIEF VALVE ECONOMIZERPLUG SUPPORTRINGS SLIDE VAL...

Страница 92: ...22 BEARING CLAMP NUT 23 BEARING SPACER SLEEVE 24 BEARING PRELOAD SPRING 25 O RING 26 BEARING BORE PLUG 27 DISCHARGE COVER 28 BEARING BORE PLUG 29 BEARING PRELOAD SPRING 30 BEARING SPACER SLEEVE 31 BEA...

Страница 93: ...mp sensors are inserted completely in their respective wells and are coated with heat conductive compound q 14 Assure that evaporator TXV bulbs are strapped onto the suction lines at 4 or 8 o clock po...

Страница 94: ...d lasts for only a short time q 4 Check the system operating parameters Do this by selecting various displays such as pressures and temperatures Compare these to test gauge readings PANEL CHECKS Power...

Страница 95: ...SYS 1 SYS 2 SYS 3 SYS 4 Liq Line Press ____ ____ ____ ____ KPA PSIG Temp ____ ____ ____ ____ C F Liq Line Temp ____ ____ ____ ____ C F Subcooling ____ ____ ____ ____ C F After the subcooling is set th...

Страница 96: ...not more than one turn at a time allowing suffi cient time approximately 15 minutes between adjust ments for the system and the thermal expansion valve to respond and settle out Assure that superheat...

Страница 97: ...rammed data as well as fault history data from recent safety shutdowns ON OFF ROCKER SWITCH This switch shuts down the entire chiller when placed in the OFF position The switch must be ON for the chil...

Страница 98: ...m annunciation YCAS chillers each have a single split circuit evapora tor serving either 2 3 or 4 independent refrigerant sys tems YCAS 2 and 3 system chillers are configured as a single self containe...

Страница 99: ...ues and stored data by the backup battery While a chiller is operating the clock must be ON Sec tion 1 11 Item 1 or the internal clock on the micropro cessor will not be active and the micro cannot ke...

Страница 100: ...Microprocessor Board via the I O Expansion Board allowing the microproces sor to monitor motor currents for low current high cur rent unbalanced current and single phasing 1 8 TRANSFORMERS 3 Transfor...

Страница 101: ...101 YORK INTERNATIONAL FORM 201 18 NM2 FIG 39 MOTOR PROTECTOR SIDE VIEW 29119A 29121A TOP VIEW TOP VIEW SIDE VIEW 29121A 29120A DISPLAY 9 SWITCH PUSHED TO LEFT INDICATES ON ON...

Страница 102: ...ontrol panel The contact must be closed to allow the chiller to run Any time the contact opens the chiller will shut down and the NO RUN PERM message will be dis played The location of the flow switch...

Страница 103: ...uld equal Reset Temp 4 sec 1 sec X 22 C 10 sec Reset Temp 66 C sec 10 sec 6 C 12 F To determine the new setpoint add the reset to the setpoint programmed into memory In the example pre ceding if the p...

Страница 104: ...o S5 DESCRIPTION Clock Enable Disable Jump Contact Real Time Clock and Battery Backup I C Microprocessor I C label shows version NOTE Dimple is positioned at top edge Dip Switch Set 8 switches System...

Страница 105: ...APH OF 50HZ MODEL LOGIC SECTION FIG 41 LOGIC SECTION LAYOUT 6 7 5 8 ITEM 1 2 3 4 5 6 7 8 DESCRIPTION Microprocessor Board Back of Keypad Back of Display I O Expansion Board Power Supply Board Relay Ou...

Страница 106: ...ll turn on and stay on for 5 minutes After 5 minutes has elapsed the heater will shut off if the discharge temperature rises above 66 C 150 F and will turn on when the discharge temperature is equal t...

Страница 107: ...micro attempts to balance run time between the two compressors A number of conditions can occur which will prevent this from happening Factors determining lead lag selection and the resulting lead la...

Страница 108: ...Warnings 2 4 Anticipation Control Status Messages 2 5 Chiller Fault Status Messages 2 6 System Fault Status Messages These messages are described in detail below with ex amples of each display In eac...

Страница 109: ...rminals 13 14 in the Logic Section s of the control panel s is are open Whenever the contact s is are open the No Run Per missive message will be displayed and the indicated sys tem will not run Syste...

Страница 110: ...f system conditions approach safety thresholds This avoids total loss of cooling re sulting from a lockout by a safety control Anticipation controls monitor discharge pressure motor current and suctio...

Страница 111: ...ring will not occur in a short time period Continuous monitoring by the microprocessor assures that instantaneous reactions result When the chiller is shut down on one of these safeties a message will...

Страница 112: ...r 3 seconds Automatic restart will occur after the first 2 shutdowns when the anti recycle timer times out and temperature demand exists After any combination of 3 Manual Reset Safeties in a 90 minute...

Страница 113: ...after 3 minutes 2 BAR 30 PSID after 4 minutes 2 7 bar 40 PSID and from 5 minutes of operation and onwards oil pres sure must remain higher than 3 4 bar 50 PSID or the system will be shut down For lowe...

Страница 114: ...0 F below the equivalent cut out temperature This programmable value is password protected High Compressor Motor Current Cutout The High Motor Current Safety protects against exces sively high motor c...

Страница 115: ...by turning the appropriate system switch OFF then ON The OL relay setting should never be altered If for some reason the Overload Relay is replaced the fol lowing procedure is used for setup A L Start...

Страница 116: ...of the chiller This is particularly useful during commissioning moni toring the operation of the chiller diagnosing potential future problems and service troubleshooting When a Display key is pressed...

Страница 117: ...ressures and Temperatures displays are as follows Minimum and maximum values may change as software EPROM revi sions are made Below 13 C 9 0 F the Suction Temp display will disappear This will in turn...

Страница 118: ...owing is a detailed guide to programming the Dip Switches together with the associated display mes sage provided for each selection when the Options key is pressed SWITCH 1 Water Brine Cooling Open Wa...

Страница 119: ...re 7 Spare Spare 8 Spare Spare S 1 3 R E F R I G E R A N T R 4 0 7 C S 1 3 R E F R I G E R A N T R 2 2 Dip Switch Physical Location and Setting FIG 43 ENLARGED PHOTOGRAPH OF DIP SWITCHES ON MICROPROCE...

Страница 120: ...onnected remotely as hard copy printouts The Operating Data Oper Data key provides a real time list of system operating data and programmed set tings The History key provides a comprehensive list of o...

Страница 121: ...of the chilled liquid leaving tempera ture in degrees per minute A minus sign indicates falling temperature No sign indicates rising temperature This message advises which system is programmed as the...

Страница 122: ...RIG 23 6 F LIQUID LINE SOLENOID ON ECONOMIZER TXV SOLENOID ON CONDENSER FAN STAGE 3 COMPRESSOR HEATER OFF WYE DELTA RELAY ON DAILY SCHEDULE S M T W T F S HOLIDAY MON START 00 00AM STOP 00 00AM TUE STA...

Страница 123: ...age will appear To select a Safety Shutdown press the appropriate key on the numeric key pad then press Enter Remember that the most recent fault information is stored as shut down No 1 After the ENTE...

Страница 124: ...d at the time of the fault This message indicates the status of both the evapora tor pump signal from the microprocessor and the evapo rator heater This message indicates that a remote device such as...

Страница 125: ...the common 3 circuit evaporator The sec ond section contains number 3 refrigerant system Both sections have their own control panel but only the Sys tem 1 2 panel is fitted with a keypad and display W...

Страница 126: ...TDOWN SYS 2 NO FAULTS OPTIONS CHILLED LIQUID WATER AMBIENT CONTROL STANDARD REFRIGERANT TYPE R 22 PROGRAM VALUES DSCH PRESS CUTOUT 399 PSIG DSCH PRESS UNLOAD 375 PSIG SUCT PRESS CUTOUT 44 PSIG HIGH AM...

Страница 127: ...The Enter key is also used to scroll through available data when using the Program or Set Schedule Holiday keys 5 4 CANCELKEY When the Cancel key is pressed the cursor will always return to the first...

Страница 128: ...pressors on or off and by varying a load unload current to each com pressor slide valve to adjust the capacity of the com pressors The microprocessor controls chilled liquid tem perature through a com...

Страница 129: ...always set at 10 seconds between changes Unload timers are set at 5 seconds between changes Slide Valve Position A slide valve position S V STEP under the keypad system keys of 75 indicates that the c...

Страница 130: ...ould normally load a compressor be tween more than one compressor For instance if sys tem 1 were nearing its motor current unload point and it was scheduled to load the micro could split a load sig na...

Страница 131: ...display will continue to show the message until another key is pressed 6 4 REMOTE COOLING SETPOINTS KEY Remote Cooling Setpoints key allows resetting the setpoint upward from the programmed value in...

Страница 132: ...NERAL The microprocessor features a continuously running in ternal Clock and calendar and can display actual time as well as the day of the week and the date An auto matic schedule feature is provided...

Страница 133: ...the chiller is not required to run on a given day the Start time should be programmed for 00 00 AM and the Stop time programmed for 12 00 AM Continue to program each day as needed After SUN has been...

Страница 134: ...e for a period of 30 minutes and the following sta tus message will be observed M A N U A L O V E R R I D E If a Warning Low Battery fault message appears on the display the in ternal clock calendar a...

Страница 135: ...to prop erly program these values may cause damage to the Chiller or operating problems 8 PROGRAM KEY 8 1 GENERAL The Program key is used to program 12 system operat ing parameters including cutout p...

Страница 136: ...G below the threshold Typically the unload point should be set 1 4 to 1 7 bar 20 25 PSIG below the below the discharge pressure cutout setting The micro will accept a range of pro grammable values bet...

Страница 137: ...ressure rises to more than 0 3 bar 5 PSI above the programmed cutout value during the 90 second time period the timer will be reset If the suction pressure does not rise to more than 0 3 bar 5 PSI abo...

Страница 138: ...ld up adjusting the timer for the longest period acceptable in each application will reduce cycling and maximize motor life 600 seconds is recommended Low Leaving Liquid Temperature Cut Out The Low Le...

Страница 139: ...Manual lead lag The ENTER key must be pressed to save the selection in memory If manual control is desired press the or key One of the following messages will be displayed System 1 2 3 or 4 can be se...

Страница 140: ...G R A M O P T I O N S S E T T O D E F A U L T V A L U E S Discharge Pressure Cut Out R22 28bar 399PSIG Low Ambient Cut Out Std Amb 4 C 25 F Low Amb 4 C 25 F HighAmbientTemperatureCut Out 38 C 130 F Di...

Страница 141: ...2 10 14 15 TABLE 2 CONDENSER FAN CONTROL FAN CONTACTOR DATA FOR DXST UNITS WITH 4 FANS SYSTEM Fan ON OFF Fan Wire Relay Stage Fans Conditions Conditions Contactor Number Board DP DP OAT Output 1 1 15...

Страница 142: ...r courses of action Refrigerant Leaks Visually check the heat exchangers compressors and pipework for damage and gas leaks Airflow Obstructions Check the air cooled condenser coil intakes and adja cen...

Страница 143: ...Pressure Suction Temperature Suction Superheat Discharge Pressure Actual Discharge Temperature Oil Pressure Oil Temperature FLA Motor Oil Level example Oil Added gallons or liters Inlet Temperature Ou...

Страница 144: ...compressor and cooler heaters for operation X Sample compressor oil and replace oil if necessary1 X Leak check the chiller1 X Disconnect power source and lock out Check tightness of power wiring conn...

Страница 145: ...k condition of oil Cooler Check water flow Check water pH glycol strength Check water pressure drop Check heater mats Air Cooled condensers Check for airflow obstructions Brush fins Check fins Check f...

Страница 146: ...s should be made to your local YORK Sales and Service Center RECOMMENDED COMPRESSOR OILS The correct type of oil must be used in the unit as shown on the unit data plate and labels Standard units use...

Страница 147: ...NT TEMP displayed than the programmed operating temperature and confirm that the displayed value is limit approximately correct The warning message should clear when the ambient air temperature rises...

Страница 148: ...ayed High oil differential pressure Dirty blocked oil filter Check and change oil filter cartridge SYS LOW SUCTION Badly adjusted or faulty expansion Check superheat displayed valve Reduced evaporator...

Страница 149: ...mperature Sensors Temperature Resistance Voltage C F ohms Vdc 0 32 163250 0 282 10 50 99500 0 447 20 68 62450 0 676 30 86 40285 0 976 40 104 26635 1 34 50 122 18015 1 76 60 140 12440 2 20 70 158 8760...

Страница 150: ...reed to in the con tract documents this warranty does not include the fol lowing costs and expenses 1 Labor to remove or reinstall any equipment materi als or components 2 Shipping handling or transpo...

Страница 151: ...172 4 196 91 1 80 176 200 93 3 82 179 6 204 95 6 84 183 2 208 97 8 86 186 8 212 100 0 88 190 4 216 102 2 90 194 220 104 4 92 197 6 224 106 7 94 201 2 228 108 9 96 204 8 232 111 1 98 208 4 236 113 3 1...

Страница 152: ...U S Olympic Team 36USC380 P O Box 1592 York Pennsylvania USA 17405 1592 Subject to change without notice Printed in USA Copyright by York International Corporation 1999 ALL RIGHTS RESERVED Form 201 18...

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