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Unit Description

The CVGF units are singlecompressor, gear-type, watercooled liquid chillers designed
for installation indoors. Each unit is a completely assembled, hermetic package that is
factorypiped, wired, leak-tested, dehydrated, oil-charged, and tested for proper control
operation before shipment.
Note: high-voltage starters are not unit-mounted before shipment.

Figure 2 and Figure 3 show a typical CVGF unit and its components. Water inlet and
outlet openings are covered before shipment. The oil tank is factory-charged with 15
gallons (56.8L) of Trane Oil 37 and a holding charge of 5 psig (34 kPa) of dry nitrogen at
70°F (21°C).

CVGF-SVX03B-EN

9

General Information

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Содержание CVGF1000

Страница 1: ...Gear Driven Centrifugal Water Cooled Liquid Chillers with AdaptiView Controls X39641150010 CVGF SVX03B EN Unit Model CVGF 400 1000Ton Units 50 and 60 Hz Installation Operation Maintenance Manual...

Страница 2: ...s containing these compounds have the same potential impact to the environment Trane advocates the responsible handling of all refrigerants including industry replacements for CFCs such as and HCFCs a...

Страница 3: ...ion 4 Installation Mechanical 46 Installation Electrical 76 Base Loading Control Algorithm 87 Control System Components 90 Machine Protection and Adaptive Control 102 Unit Startup 112 Periodic Mainten...

Страница 4: ...B5C1C23A1A201E3AA0 SERIAL NO S O NO ELECTRICAL CHARACTERISTICS RATED VOLTAGE 380 VOLTS 50HZ 3PH NAMEPLATE NMKW 338 kW VOLTAGE UTILIZATION RANGE 345 422 VAC MINIMUM CIRCUIT AMPACITY 726 AMPS MAXIMUM FU...

Страница 5: ...ic Building Automation Interface GPM Gallons per minute HLUV High Lift UnloadingValve Hp Horsepower HVAC Heating Ventilating and Air Conditioning IE Internally EnhancedTubes IPC Interprocessor Communi...

Страница 6: ...TRMM Tracer Communications UCP Unit Control Panel CVGF SVX03B EN 6 General Information...

Страница 7: ...lief Valves Unit Nameplate Control Panel AdaptiView Oil Pump Evaporator Figure 2 General CVGF unit component Figure 3 Component location for typical CVGF unit back view Motor Unit nameplate Relief val...

Страница 8: ...on of a damaged unit without sales office approval Inspection Checklist To protect against loss due to damage incurred in transit complete the pre commis sioning checklist which can be obtained from y...

Страница 9: ...il charged and tested for proper control operation before shipment Note high voltage starters are not unit mounted before shipment Figure 2 and Figure 3 show a typical CVGF unit and its components Wat...

Страница 10: ...cial H 9th digit Unit Voltage D 380V 60 Hz F 460V 60 Hz H 575V 60 Hz N 4160V 60 Hz P 3300V 60 Hz R 380V 50 Hz T 400V 50 Hz U 415V 50 Hz V 3300V 50 Hz X 6600V 60 Hz Z 6600V 50 Hz S Special A0 10th and...

Страница 11: ...st digit EvaporatorTube Bundle A Small bundle B Medium bundle C Large bundle D Extra large bundle S Special 1 22nd digit EvaporatorTubes 1 75 diameter 025 wall internally enhanced cu tube 2 1 00 diame...

Страница 12: ...n Marine 2 pass E 300 PSI Marine 2 pass G 300 PSI Non Marine 2 pass S Special 23 28th and 29th digit Orifice Series 13 Orifice series 14 Orifice series 15 Orifice series 16 Orifice series 17 Orifice s...

Страница 13: ...anguage E English F French G German T Italian P Spanish S Special 2 37th digit Motor Frame Size 2 400 Frame 3 440E Frame 4 5000 Frame S Special C 38th digit Impeller Rim Diameter 1st Stage A 9 5 Rim d...

Страница 14: ...ull volt remote mounted F Autotransformer remote mounted G Primary reactor remote mounted M Solid State Floor Mounted N Solid State Wall Mounted R Customer supplied 0 42nd digit Additional Pressure Ve...

Страница 15: ...F 9th digit Unit Voltage D 380V 60Hz 3Ph F 460V 60Hz 3Ph H 575V 60Hz 3Ph R 380V 50Hz 3Ph T 400V 50Hz 3Ph U 415V 50Hz 3Ph S Special A 10th digit Design Sequence A Original Design A 11th digit StarterT...

Страница 16: ...N0035FAA01EA0E1 Model Number Digit Identification Model number digits are selected and assigned in accordance with the following definitions using the model number example shown above C 1st digit V 2n...

Страница 17: ...tor 0 None D 25 KVAR E 30 KVAR F 35 KVAR G 40 KVAR H 45 KVAR J 50 KVAR K 60 KVAR L 70 KVAR M 75 KVAR N 80 KVAR P 90 KVAR R 100 KVAR T 120 KVAR U 125 KVAR V 150 KVAR S Special A 15th Digit Ground Fault...

Страница 18: ...onal relays and wiring Water piping Thermometers Pressure Relief Relief valves Insulation Insulation optional Insulation Lifting beam equipment skates rollers and other lifting operations Circuit brea...

Страница 19: ...install valves in the water piping upstream and down stream of the evaporator and condenser water boxes in order to isolate the shells for maintenance and to balance and trim the system Supply and ins...

Страница 20: ...6220 6220 6220 6220 6220 2821 2821 2821 2821 2821 2821 2821 2821 Evaporator 3948 3948 4228 4228 4193 4193 4568 4568 1791 1791 1918 1918 1902 1902 2072 2072 Condenser 2857 2857 3472 3472 3152 3152 387...

Страница 21: ...38 Return pound 341 341 341 341 341 341 341 341 kg 155 155 155 155 155 155 155 155 300 pound Waterboxes 101 9 101 6 95 9 95 6 117 4 117 0 111 4 111 1 386 385 363 362 444 443 422 421 112 3 112 3 110 6...

Страница 22: ...5461 5834 2477 2643 2477 2643 Condenser 3937 4763 3937 4763 1786 2161 1786 2161 Economizer 799 799 799 799 362 362 362 362 Starter Panel 542 542 542 542 246 246 246 246 Control Panel 70 70 70 70 318...

Страница 23: ...n pound 341 341 341 341 kg 155 155 155 155 300 pound Waterboxes 163 2 158 2 154 1 149 1 618 599 583 564 185 1 185 1 189 4 189 4 701 701 717 717 Evaporator 2 pass Weight Supply pound 427 427 427 427 kg...

Страница 24: ...24 2110 2110 2502 2502 2211 2211 2642 2642 904 904 904 904 904 904 904 904 410 410 410 410 410 410 410 410 542 542 542 542 542 542 542 542 246 246 246 246 246 246 246 246 70 70 70 70 70 70 70 70 318 3...

Страница 25: ...kg 226 9 226 9 226 9 226 9 226 9 226 9 226 9 226 9 Return pound 437 6 437 6 437 6 437 6 437 6 437 6 437 6 437 6 kg 198 5 198 5 198 5 198 5 198 5 198 5 198 5 198 5 300 pound Waterboxes 151 146 6 142 1...

Страница 26: ...410 542 542 542 542 246 246 246 246 70 70 70 70 318 318 318 318 1216 1216 1216 1216 552 552 552 552 1867 1891 1867 1891 847 858 847 858 298 298 298 298 135 135 135 135 22 821 22 845 24 247 24 271 103...

Страница 27: ...ound 437 6 437 6 437 6 437 6 kg 198 5 198 5 198 5 198 5 300 pound Waterboxes 174 7 170 3 161 8 157 4 661 3 644 7 612 5 595 8 186 4 186 4 183 6 183 6 705 6 705 6 695 695 Evaporator 2 pass Weight Supply...

Страница 28: ...5 5835 6275 2647 2846 2647 2846 Condenser 4375 5400 4375 5400 1985 2449 1985 2449 Economizer 799 799 799 799 362 362 362 362 Starter Panel 542 542 542 542 246 246 246 246 Control Panel 70 70 70 70 318...

Страница 29: ...7 340 67 340 67 kg 154 5 154 5 154 5 154 5 300 pound Waterboxes 190 4 185 4 177 4 172 4 721 702 672 653 214 5 214 5 219 0 219 0 812 812 829 829 Evaporator 2 pass Weight Supply pound 426 69 426 69 426...

Страница 30: ...2 10 305 250 305 250 305 250 305 250 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 895 895 895 895 895 895 895 895 14 14 14 14 14 14 14 14 356 356 356 356 356 356 356 356 Wei...

Страница 31: ...10 12 10 305 250 305 250 305 250 305 250 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 2 11 1 4 895 895 895 895 895 895 895 895 14 14 14 14 14 14 14 14 356 356 356 356 356 356 356 35...

Страница 32: ...r at state point 1 Liquid refrig erant is vaporized to state point 2 as it absorbs heat from the system cooling load The vaporized refrigerant flows into the compressor first stage Compressor first st...

Страница 33: ...efrigerant at an intermediate pressure labeled P1 Flashing some liquid refrigerant cools the remaining liquid to state point 8 Another benefit of flashing refrigerant is to increase the total evaporat...

Страница 34: ...Oil sump Pump Fixed orifice Distributor Evaporator Fixed orifice Strainer Fixed orifice Condenser sump Internal filter Compressor Inlet vanes High lift unloading valve HLUV Gears Bearings Oil cooler...

Страница 35: ...with high strength aluminum alloy fully shrouded impellers The impellers are tested at 25 percent over design operating speed The rotating assembly is dynamically balanced for vibration of less than 5...

Страница 36: ...ion view Motor rotor Motor shaft Bull gear Discharge end Suction end Motor terminal Motor housing Motor stator Pinion shaft Gear housing 2nd stage impeller Oil pump 1st stage impeller Oil sump CVGF SV...

Страница 37: ...for daily operation and one for periodic service appropriate information is readily accessible Large display Human Interface For the operator day to day operational information is presented at the pa...

Страница 38: ...ing Auto Waiting to Start Starting Compressor Running Running Running Limit Fast Restart or Satisfied Setpoint Stop Command or Diagnostic m r i f n o C w o d t u h S d e n m r i f n o C t r a t S d e...

Страница 39: ...Figure 8 Sequence of operation power up Note The variation in AdaptiView Power Up time is depen dent on the number of installed options CVGF SVX03B EN 39 General Information...

Страница 40: ...xit Limit Mode Starting Compressor Running Limit Running Running Modulate IGV for LWT control Running Modulate IGV for Limit control Modulate IGV for LWT control Figure 9 Sequence of operation running...

Страница 41: ...1 minute De energize oil pump Confirm no oil pressure 5 minutes after oil pump is de energized De energize evaporator water pump relay Evaporator pump off delay not performed for immediate shutdown De...

Страница 42: ...ze compressor Confirm no oil pressure 5 minutes after oil pump is de energized De energize oil pump Close IGV 0 50 seconds Post lube 1 minute Auto Confirm no compressor currents within 30 seconds De e...

Страница 43: ...user 2 Idle The oil pump is off The oil temperature is maintained by the heater at the con troltemperature setpoint 2 5 F 1 4 C 3 Pre lube The oil pump lubricates the bearing for 30 seconds before the...

Страница 44: ...f the Low Differential Oil Pres sure Cutout setpoint Low Differential Pressure Cutout is a latching diagnostic that can come up while the unit is running Oil pressure is in dicative of oil flow and ac...

Страница 45: ...mizer Condenser Sump High Lift Unloading Valve HLUV Refrigerant Oil Motor Oil Cooler Strainer S F Distributor Evaporator Fixed Orifice Oil Sump Pump Internal Filter Bearings Gears ST 1 ST 2 Compressor...

Страница 46: ...te Consult an acoustical engineer for critical applications Foundation Provide rigid non warping mounting pads or a concrete foundation of sufficient strength and mass to support the chiller operating...

Страница 47: ...sor service and to provide sufficient clearance for the opening of control panel doors Refer to Figures 13 and 14 Tables 7 and 8 for minimum clearances required for condenser tube service In all cases...

Страница 48: ...700 700 13 11 3 7 13 5 6 11 6 10 4 235 1 092 4 083 1 790 2 083 740 1000 1000 13 11 3 7 13 5 8 4 7 6 3 4 4 235 1 092 4 083 2 540 2 305 Notes CL1 at either end of the machine and is required for tube p...

Страница 49: ...1 CL2 Length Height Width 400 500 500 13 11 3 7 13 5 6 11 6 3 4 235 1 092 4 083 1 790 1 913 560 700 700 13 11 3 7 13 5 6 11 6 7 4 235 1 092 4 083 1 790 2 028 740 1000 1000 13 11 3 7 13 5 8 4 7 5 4 235...

Страница 50: ...10 DN200 DN200 DN250 Condenser 2 pass 10 12 14 DN250 DN300 DN350 Water Drainage Locate the unit near a largecapacity drain for water vessel drain down during shut down or repair Condensers and evapora...

Страница 51: ...ation is presented in Figure 16 and Figure 17 Note Three types of spring isolators shown inTables 11 13 are used Each type has its own maximum loading characteristics Spring isolators are typically sh...

Страница 52: ...rs level the chiller by turning the adjusting bolt on each of the isolators on the low side of the unit Be sure to work from one isolator to the next Remember that the chiller must be level to within...

Страница 53: ...top and bottom 2 1 B UNC Adjusting and Leveling Bolts CT 7 Spring Isolators C C Foundation Bolts Free Height Adjust isolator so that the upper housing clears the lower housing by at least 1 4 6 3mm an...

Страница 54: ...Trane Part Maximum Load lbm kg Spring Color Coding Location Used Figure 18 Load points 500 700 and 1000 ton families reference table 10 Condenser Evaporator Top View A B C D Table 10 Isolation loads 5...

Страница 55: ...r an even level lift 2 900 mm recommended clearance above highest point of compressor 3 Attach safety chains or cables as shown and without tension The safety chain is not used for lifting but is ther...

Страница 56: ...hould not be tight Leave 2 to 3 mm gap Unit mounting pad 13 mm thick by Trane Vibration isolator by Trane 75 mm steel pipe steel plate Concrete To meet local codes Recommended procedure to allow for t...

Страница 57: ...x could result in death or serious injury WARNING Eyebolts The proper use and ratings for eyebolts can be found in ANSI ASME standard B18 15 or in European standard EN1677 1 and EN ISO 3266 Maximum lo...

Страница 58: ...ction See figure 22 and 23 3 Waterbox 1 2 3 WARNING OVERHEAD HAZARD Never stand below or in close proximately to heavy objects while they are suspended from or being lifted by a lifting device Failure...

Страница 59: ...ring information Table 15 Connection devices CVGF Safety Hoist Ring 674kg RNG00003C M12x1 75 See figure 22 Unit Product Rated Capacity Part Number Safety Hoist Ring 2143kg RNG00004C M20x2 5 See figure...

Страница 60: ...ior to use for lifting waterboxes Shorting of the bolt as instructed will help insure the base of the hoist right is flat against the waterbox when properly seated If bases of hoist is not properly se...

Страница 61: ...300Psi 185 408 M20X2 5 330 728 M20X2 5 312 688 M12X1 75 Condenser 150Psi 160 353 M12X1 75 312 688 M20X2 5 220 486 M12X1 75 Condenser 300Psi 199 439 M20X2 5 370 816 M20X2 5 312 688 M12X1 75 1000 Evapor...

Страница 62: ...inch OD tubes and 2 pass waterboxes Pressure Drop in feet of water Flow in GPM Pressure drop for CVGF 500 Evaporators with 0 75 inch OD tubes and 2 pass waterboxes Pressure drop in feet of water Bund...

Страница 63: ...0 inch OD tubes and 2 pass waterboxes Flow in GPM Pressure drop for CVGF 500 Condensers with 1 0 inch OD tubes and 2 pass waterboxes Pressure drop in feet of water Flow in GPM Pressure drop in feet of...

Страница 64: ...4 inch OD tubes and 2 pass waterboxes Pressure drop in feet of water Flow in GPM Pressure drop for CVGF 700 Condensers with 3 4 inch OD tubes and 2 pass waterboxes Pressure drop in feet of water Flow...

Страница 65: ...4 inch OD tubes and 3 pass waterboxes Pressure drop in feet of water Flow in GPM Pressure drop for CVGF 700 Evaporators with 1 0 inch OD tubes and 2 pass waterboxes Pressure drop in feet of water Flow...

Страница 66: ...inch OD tubes and 2 pass waterboxes Pressure drop in feet of water Flow in GPM Pressure drop for CVGF 700 Evaporators with 1 0 inch OD tubes and 3 pass waterboxes Pressure drop in feet of water Flow...

Страница 67: ...tubes and 2 pass waterboxes Pressure drop in feet of water Flow in GPM Pressure drop for CVGF 1000 Evaporators with 3 4 inch OD tubes and 3 pass waterboxes Pressure drop in feet of water Flow in GPM G...

Страница 68: ...s Water Pressure Drop Data Pressure drop in feet of water Flow in GPM Pressure drop for CVGF 1000 Evaporators with 1 0 inch OD tubes and 2 pass waterboxes Pressure drop in feet of water Flow in GPM Gr...

Страница 69: ...s Water Pressure Drop Data Pressure drop in feet of water Flow in GPM Pressure drop for CVGF 1000 Evaporators with 1 0 inch OD tubes and 3 pass waterboxes Pressure drop in feet of water Flow in GPM Gr...

Страница 70: ...e to it Evaporator Piping Components Note Ensure that all piping components are between the shutoff valves so that both the condenser and the evaporator can be isolated Piping components include all d...

Страница 71: ...out tees Pipe strainer Leaving condenser water piping Air vents to bleed air from system Water pressure gauges with manifolded shutoff valves Pipe unions Vibration eliminators rubber boots Shutoff iso...

Страница 72: ...field supplied thermometers and pressure gauges with manifolds whenever practical as shown in Figure 24 Locate pressure gauges or taps in a straight run of pipe avoid placement near elbows and so fort...

Страница 73: ...minimum flow recommendations for specific water pass arrange ments Flow switch contacts are closed when there is proof of water flow Refrigerant Pressure Relief Valve Venting WARNING Possible refrige...

Страница 74: ...pes and quantities of insulation required All CVGF units come from the factory with oil sump insulation Notes Refrigerant charging valves water temperature sensors and drain and vent connections when...

Страница 75: ...ation requirements Suction line pipe Suction cover Evaporator water box Evaporator Evaporator water box Oil sump casing Oil sump casing Oil sump casing Gear Housing Front View Gear Housing Side View I...

Страница 76: ...equipment grounding requirements per NEC All field installed wiring must be checked for proper terminations and for possible shorts or grounds Do not modify or cut enclosure to provide electrical acce...

Страница 77: ...starter must carry the correct number of conductors to ensure equal phase representation See Figure 26 6 As you install the power supply conduit make sure that this position does not in terfere with...

Страница 78: ...FCC must be wired into the starter correctly Failure to do so may cause misapplica tion of these capacitors and result in a loss of motor overload protection and subse quently cause motor damage Table...

Страница 79: ...27 PFCC leads routed through overload current transformer Line PFCC Overload Current Transformer Motor Load OR Line PFCC Overload Current Transformer Motor Load Note See the attached wiring diagram fo...

Страница 80: ...ng wiring between the starter panel compressor and UCP control panel is factoryinstalled with unit mounted starters but must be fiel dinstalled when a remotemounted starter is used Figure 28 Typical e...

Страница 81: ...uit must enter the higher than 30 Vdc Class I portion of the unit control panel 3 IPC circuit conduit must enter the Low Voltage Class II portion of the UCP 4 See starter submittal drawing for locatio...

Страница 82: ...leads between the starter and compressor mo tor These connections will be completed under supervision of a qualified Trane ser vice engineer after the prestart inspection CAUTION Correct motor wire te...

Страница 83: ...circuit out of the starter enclosure make sure that it is at least 6 from all wires carrying a higher voltage 5 For UCP IPC shielded twisted pair wiring the shield should be grounded on one end only a...

Страница 84: ...trical Figure 30 Terminal stud clamp and lug assembly Belleville washer 3 8 Bolt Terminal lugs Belleville washer Motor terminal stud Terminal clamp Front View Mid Voltage RXL RATR RPIR CXL CATR CPIR C...

Страница 85: ...LLID configuration settings will be checked and configured for Remote Starters during start up commissioning To configurate starter module and perform other starter checks it is recommended that the...

Страница 86: ...hilled Water Supply CHW and Return Water Temperature Sensors Condenser Water Pump Chiller 1 Chilled Water Pump AI BO BO Chilled Water Supply CHW and Return Water Temperature Sensors Condenser Water Pu...

Страница 87: ...ntrol logic limits the loading of the chiller to prevent the chiller from shutting down on a safety limit These limits may prevent the chiller from reaching the load requested by the Base Loading sign...

Страница 88: ...e graphs in Figure 32 show the relationship between input and percent RLA While in base loading the active current limit setpoint is set to the Tracer or external base load setpoint providing that the...

Страница 89: ...4 6 8 10 12 14 16 18 20 mA RLA Base Loading using External Voltage Input RLA 100 90 80 70 60 50 40 30 20 4 6 8 10 12 14 16 18 20 Volts RLA Figure 32 Base loading with external mA input and with exter...

Страница 90: ...vices table corresponds to the same device designators Optional controls are present when a specific optional controls package is specified Optional controls packages are OPST Operating Status GBAS Ge...

Страница 91: ...urge Mode the head relief request relay on the 1A9 J2 6 to J2 4 will be energized and can be used to control or signal for a reduction in the entering condenser water temperature This is designed to p...

Страница 92: ...ncy stop J2 3 Binary Input Signal 2 J2 4 Ground 1F1 Standard not for field use 1F2 Standard not for field use 1T1 Standard not for field use 1Q1 Standard not for field use 1Q3 Standard not for field u...

Страница 93: ...Output 1 J2 3 Ground 1A17 Optional Dual Analog Input Output Module 1A17 Optional Dual Analog Input Output Module 1A18 Optional Dual LV Binary input module 1A18 Optional Dual LV Binary input module Ext...

Страница 94: ...ure based On standard machines the Percent Condenser Pressure Indication Output is based on the Saturated Condenser Refrigerant and a temperature to pressure conversion is made If the Condenser Satura...

Страница 95: ...Pressure is typically set to 30 psi and corresponds to 10 Vdc The Minimum Delta Pressure Calibration setting has a range of 0 400 psid 0 2758 kPa in increments of 1 psid 1kPa The Maximum Delta Pressu...

Страница 96: ...Ground GBAS Signal 1 J2 2 Input 1 J2 3 Ground GBAS Signal 2 External Current limit Setpoint J2 5 Input 2 J2 6 Ground 1A15 Optional Dual Analog Input output Module 1A15 Optional Dual Analog Input outp...

Страница 97: ...put Signal 1 J2 1 to 2 Binary Input Signal 2 J3 1 to 2 High Voltage Binary Input Off Voltage 0 to 40 Vac RMS On Voltage 70 to 276 Vac RMS Input is not polarity sensitive Hot and neutral can be switche...

Страница 98: ...of two 14 AWG J2 1 Output 1 to J2 3 ground J2 4 Output 2 to J2 6 ground AdaptiView provides a 2 10 Vdc analog signals as Outputs The Output s maximum source capability is 22mA The maximum recommended...

Страница 99: ...he logic to provide the motor protection for current overload phase reversal phase loss phase imbalance and momentary power loss Electrical Sequence This section will acquaint the operator with the co...

Страница 100: ...e start contactor 2K1 and check for no current 500 msec If currents are de tected the MMR diagnostic Starter Fault Type I is generated and closes for one second 4 Delay time 200 msec Opens 2K1 5 Close...

Страница 101: ...stop se quence is initiated as follows 1 The inlet guide vanes are driven closed for 50 seconds 2 After the 50 seconds has elapsed the stop relay 2A1 J10 and the condenser wa ter pump relays 1A5 J2 o...

Страница 102: ...s detected and will display a non latching diagnostic indicating the failure The oil pump will be run for the post lube time period when power returns The com pressor and compressor motor are protecte...

Страница 103: ...and IGV Closed Energize Condenser Water Pump Relay Confirm Condenser Water Flow Within 4 minutes 15 seconds 6 Second Filter Enforce Restart Inhibit Timer 30 Minutes De Energize Compressor Confirm No C...

Страница 104: ...ning Overload Protection In the run mode a time trip curve is looked at to determine if a diagnostic should be called The starter LLID continuously monitors compressor line currents to provide running...

Страница 105: ...At machine startup or with any setpoint change the new current limit setpoint reached after the filtered setpoint time elapses The minimum current limit setpoint is default set to 40 percent RLA 20 10...

Страница 106: ...arting Percent default is 40 percent RLA and settable from 20 100 percent This setting controls the Starting point of the Filtered Current Limit Setpoint Note UT provides access to these three setpoin...

Страница 107: ...settable diagnostic MAR The Large display Operating Mode indicates when the Leaving Water Temperature Cut out Setpoint conflicts with the chilled water temperature setpoint by a message on the display...

Страница 108: ...lled Condenser Refrigerant Pressure Limit or High Pressure Limit A fully loaded compressor operating at high Evaporator Leaving Water Temperature ELWT and high condenser temperatures causes high conde...

Страница 109: ...to amount of refrigerant dilution in the oil It is required that oil contains minimal refrigerant in it This is accomplished by boiling the refrigerant out of the oil by maintaining a high enough oil...

Страница 110: ...emperature the CWR feature is standard When the CWR function is based on outdoor air temperature the CWR fea ture is an option requiring an outdoor temperature sensor The type of CWR is selected in th...

Страница 111: ...rate Trigger IGV may be calculated Here non saturated conditions exist right away resulting in unstable temperature measure ments Manual Capacity Control This is the Compressor Control Signal mode ove...

Страница 112: ...essor one person will look at the rotor from the rear of the motor through the sight glasses to determine correct direction Looking at the sight glass the direction will be counter clockwise Do not ch...

Страница 113: ...stic Oil pressure must be verified within 3 minutes or a MMR diagnostic is generated When less than 5 seconds remain on the restart inhibit the pre start test is conduct ed onY Delta starters If fault...

Страница 114: ...ctrical Components During installation testing servicing and troubleshooting of this product it may be necessary to work with live electrical components Have a qualified licensed electri cian or other...

Страница 115: ...the condenser headers 6 Once the unit is secured for winter the maintenance procedures described under Annual Maintenance in the Periodic Maintenance section of this manual should be performed by auth...

Страница 116: ...rent drawn by the compressor Amps 3 Oil level in the oil sump The oil level must be visible in the sight glass 4 Condenser pressure evaporator pressure 5 Unusual noise vibration and so forth It is str...

Страница 117: ...material from the condenser tubes Working a round nylon or bristle brush attached to a rod in and out of the tubes loos ens the sludge After cleaning flush the tubes with clean water The chemical meth...

Страница 118: ...for pressure testing as they may become flammable and could result in an explo sion Refrigerant when used as a trace gas should only be mixed with dry nitrogen for pressurizing units Failure to follo...

Страница 119: ...l recovery and recharge hose or line to the oil sump drain valve located on the bottom of the oil sump See Figure 40 Attach the refrigerant vapor return hose or line of the recovery unit to the conden...

Страница 120: ...ory experienced in refrigerant and oil chemistry and the servicing ofTrane centrifugal chillers Oil Charging Procedure Use appropriate oil as specified USA Europe Oil 0037 Oil 021E Oil 0049 Oil 0020E...

Страница 121: ...residual moisture or non condensables which may have been introduced during the oil charging A vacuum of at least 500 microns 0 5 mm Hg should be attained before blanking off the vacuum pump A vacuum...

Страница 122: ...is at least 30 F 16 C above saturated evaporator temperature or at least 105 F 58 C whichever is higher The oil sump comes factory insulated and must remain insulated to allow the oil temperature to...

Страница 123: ...gauge before the oil filter to obtain the pressure drop If the pressure drop is excessive more than 8 psid 54 kPa shut the oil pump off and replace the oil filter per the proce dure outlined previous...

Страница 124: ...vacuum rises above this either there is a leak or the unit has moisture present Note If oil is in the system this test is more difficult The oil is aromatic and will give off vapors that will raise th...

Страница 125: ......

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Страница 128: ...EN CVGF SVU02B E4 CVGF SVN02C E4 www trane com For more information contact your local Trane office or e mail us at service trane com Trane has a policy of continuous product and product data improvem...

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