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Troubleshooting
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Summary of Contents for McLean SPECTRACOOL G57
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Page 1: Air Conditioner
INSTRUCTION MANUAL SPECTRACOOL™ Air Conditioner Protecting Electronics. Exceeding Expectations.™ McLean Parts 5736 N Michigan Road Indianapolis, IN 46228 USA +1.317.257.6811 +1.317.257.1590 sales@mcleanparts.net McLeanParts.com Rev. I © 2012 Pentair Technical Products P/N 10-1008-243 89055585... -
Page 2: Table Of Contents
AIR CONDITIONER UNIT COMMUNICATION FEATURES .............................................15 USB Communication ......................................................15 Ethernet Communication ....................................................15 Software and MIB File Downloads ................................................15 Using the McLean PC Interface Tool ................................................15 USB COMMUNICATION MODE ....................................................16 Viewing Air Conditioner Unit Values ................................................16 Changing Air Conditioner Unit Values .................................................16 Viewing and Changing Ethernet Information ............................................16... -
Page 3: Receiving The Air Conditioner
Damage evident upon receipt should be noted on the freight bill. Damage should be brought to the attention of the delivering carrier -- NOT to McLean Parts -- within 15 days of delivery. Save the carton and packing material and request an inspection. Then file a claim with the delivering carrier. -
Page 4: Technical Information
TECHNICAL INFORMATION Sequence of Operation The air conditioner comes standard with two internally mounted thermostats. There are two modes of operation; heating and cooling. During heating and cooling modes, the evaporator fan will be running. Heating When the enclosure temperature is below the heating thermostat setpoint, power is applied to the heaters. When the enclosure temperature is 10 degrees above the setpoint, the heater is powered off. -
Page 5: Time Delay Relay
Time Delay Relay The time delay relay keeps the unit from short cycling after the freezestat resets following a frozen evaporator coil condition. 200 V to 230 V Transformer (G572026G2XX only) The 230 V from this transformer powers the compressor, fans, contactor and optional transformers. Phase Monitor (G572046GXXX only) The phase monitor protects the compressor from reverse operation. -
Page 6: G57 230V 1-Phase Generic Schematic (Actual Unit Options May Vary)
G57 230V 1-Phase Generic Schematic (actual unit options may vary) 89047070 G57 400/460V 3-Phase Generic Schematic (actual unit options may vary) GRND VARISTOR AUTO-TRANSFORMER PHASE TRANSFORMER W/ MONITOR TEMP. DISPLAY (OPTIONAL) HEATING COOLING CONTACTOR CLG CONTACTOR CONTACTOR CLG TSTAT PHASE MONITOR RELAY HTG TSTAT HTG CONTACTOR... -
Page 7: G57 208V 1-Phase Generic Wire Diagram (Actual Unit Options May Vary)
G57 208V 1-Phase Generic Wire Diagram (actual unit options may vary) 89055585 © 2012 Pentair Technical Products - 7 -... -
Page 8: G57 230V 1-Phase Generic Wire Diagram (Actual Unit Options May Vary)
G57 230V 1-Phase Generic Wire Diagram (actual unit options may vary) - 8 - © 2012 Pentair Technical Products 89055585... -
Page 9: G57 400/460V 3-Phase Generic Wire Diagram (Actual Unit Options May Vary)
G57 400/460V 3-Phase Generic Wire Diagram (actual unit options may vary) 89055585 © 2012 Pentair Technical Products - 9 -... -
Page 10: Dimensional Drawings
DIMENSIONAL DRAWINGS 20000 BTU/Hr. (G572026GXXX, G572026G2XX) With Thermostats 88040022 20000 BTU/Hr. (G572046G15X) With Thermostats 89059779 - 10 - © 2012 Pentair Technical Products 89055585... -
Page 11: Installation Instructions
INSTALLATION INSTRUCTIONS 1. Inspect the air conditioner and verify correct functionality before mounting the air conditioner. See HANDLING AND TESTING THE AIR CONDITIONER on page 3. 2. Using the mounting gasket kit provided with the unit, install gaskets to the air conditioner, see Figure 1. 3. - Page 12 89045267 PARTIAL RECESS MOUNT Figure 1 Cutout Dimensions - 12 - © 2012 Pentair Technical Products 89055585...
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Page 13: Remote Access Control (Optional)
REMOTE ACCESS CONTROL (optional) INTRODUCTION The McLean Remote Access Control is a parametric controller for the complete management of McLean air conditioners. All settings are pre-programmed at the factory. Cooling/heating set-points, cooling/heating differential and high /low temperature alarm set-points can be adjusted by the user. Alarms are outputted through a relay contact and also can be accessed through an Ethernet connection utilizing SNMP. -
Page 14: Displaying And Changing Program Variables
ALARM OUTPUT CONTACT The McLean Remote Access Control has a normally open dry contact alarm output with a resistive load rating of 250 VAC at 3 amps. Two yellow 18 AWG wires located at the back of the air conditioner provide a connection to this output. -
Page 15: Alarm Input Connection
ALARM INPUT CONNECTION The McLean Remote Access Control can accept a dry contact/switch input via the two 18 AWG white wires located at the back of the air conditioner. This input is associated with the controller display alarm mnemonic TP (door open and/ or smoke detected). -
Page 16: Usb Communication Mode
The PC Interface Tool gives the user the ability to communicate with the air conditioner unit to read/write parameters using either Ethernet or USB connections. USB COMMUNICATION MODE NOTE: Before connecting unit to the PC, make note of the comm ports present. After the unit is connected to the PC, a new comm port will be added to the list. -
Page 17: Ethernet Communication Mode
Click Load Ethernet Info button Alarm Log Accessible with SNMP • Using custom software with McLean provided MIB file gives the ability to view a log of the last 25 alarms 89055585 © 2012 Pentair Technical Products - 17 -... -
Page 18: Remote Access Control Pin-Out
Remote Access Control Pin-out FUNCTION NAME PIN # WIRE # COOL ORG78 C1/2 HEAT BRN76 C1/2 ENCL MI BLK77 C3/4 U1 OUTPUTS No4 (na) C3/4 ALARM RELAY OUTPUT YEL39 YEL38 ALARM INPUT CONNECTION WHT63 MALFUNCTION NC SWITCH BLU88 ID3 (na) ID4 (na) ID5 (na) DIGITAL INPUT GROUND... -
Page 19: Schematic And Wiring Diagram For Remote Access Control
Schematic and Wiring Diagram for Remote Access Control G57 1-Phase Generic Schematic (actual unit options may vary) 89080129 89055585 © 2012 Pentair Technical Products - 19 -... -
Page 20: G57 3-Phase Generic Schematic (Actual Unit Options May Vary)
G57 3-Phase Generic Schematic (actual unit options may vary) 89080130 - 20 - © 2012 Pentair Technical Products 89055585... -
Page 21: G57 1-Phase Generic Wire Diagram For Remote Access Control (Actual Unit Options May Vary)
G57 1-Phase Generic Wire Diagram for Remote Access Control (actual unit options may vary) 89083974 89055585 © 2012 Pentair Technical Products - 21 -... -
Page 22: G57 3-Phase Generic Wire Diagram For Remote Access Control (Actual Unit Options May Vary)
G57 3-Phase Generic Wire Diagram for Remote Access Control (actual unit options may vary) 89083973 - 22 - © 2012 Pentair Technical Products 89055585... -
Page 23: Dimensional Drawings
DIMENSIONAL DRAWINGS G57 Generic Model Drawing With Remote Access Control 89083020 89055585 © 2012 Pentair Technical Products - 23 -... -
Page 24: Installation Instructions With Remote Access Control
INSTALLATION INSTRUCTIONS WITH REMOTE ACCESS CONTROL 1. Inspect the air conditioner and verify correct functionality before mounting the air conditioner. See HANDLING AND TESTING THE AIR CONDITIONER on page 19. 2. Using the mounting gasket kit provided with the unit, install gaskets to the air conditioner, see Figure 2. 3. -
Page 25: Maintenance
MAINTENANCE Compressor The compressor requires no maintenance. It is hermetically sealed, properly lubricated at the factory and should provide years of satisfactory operating service. Under no circumstances should the access fitting covers be loosened, removed or tampered with. Breaking of seals on compressor access fittings during warranty period will void warranty on hermetic system. Recharging ports are provided for the ease and convenience of reputable refrigeration repair service personnel for recharging the air conditioner. -
Page 26: Condenser And Evaporator Air Movers
Condenser and Evaporator Air Movers Impeller motors require no maintenance. All bearings, shafts, etc. are lubricated during manufacturing for the life of the motor. If one of the condenser impeller motors (ambient impellers) should fail, it is not necessary to remove the air conditioner from the cabinet or enclosure to replace the blower. -
Page 27: Refrigerant Properties Chart (R407C)
Refrigerant Properties Chart (R407c) °F °C Bubble Pt Dew Point °F °C Bubble Pt Dew Point 15.6 117.7 96.8 -37.2 18.3 128.7 106.7 -34.4 21.1 140.2 117.2 -31.7 10.7 23.9 152.5 128.4 -28.9 13.9 26.7 165.5 140.4 -26.1 17.3 29.4 179.2 153.1 -23.3... -
Page 28: Unit Characteristics
Unit Characteristics Model G57-2026-G2XX G57-2026-G1XX G57-2046-GXXX Dimensional Data 57.69” / 1465.4 mm Height 20.78” / 527.8 mm Width 15.28” / 388.1 mm Depth 219 lbs / 99 kg 197 lbs / 89 kg 207 lbs / 94 kg Unit Weight Unit Protection Rating Type 12/4/4X/3R Cooling Data... -
Page 29: Service Data
SERVICE DATA Components List Part Number Part Description 208 V 1 Phase 230 V 1 Phase 460 V 3 Phase 10-1032-08 10-1032-08 Capacitor, Compressor, Start 52-6084-09 52-6084-09 Capacitor, Compressor, Run 52-6032-20 52-6032-20 52-6032-20 Capacitor, Impellers (3) 10-1060-72 Circuit Breaker, Compressor 89057368 89057368 89057368... -
Page 30: Trouble Shooting
TROUBLE SHOOTING Basic Air Conditioning Trouble Shooting Check List - Thermostat Version 1. Check manufacturer’s nameplate located on the unit for correct power supply. 2. Turn on power to the unit. The evaporator (Enclosure or “COLD” air) impeller should come on. Is there airflow? YES, proceed to step 3. -
Page 31: Symptoms And Possible Causes - Thermostat Version
Unit blows breakers Short in system Drain plugged Drain tube kinked Getting water in enclosure Enclosure not sealed (allowing humidity in) Mounting gasket damaged For additional technical support, contact McLean Parts at 317-257-6811 89055585 © 2012 Pentair Technical Products - 31 -... -
Page 32: Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version
Basic Air Conditioning Trouble Shooting Check List - Remote Access Control Version 1. Check manufacturer’s nameplate located on the unit for correct power supply. 2. Turn on power to the unit. The controller will display a start up sequence then revert to the normal temperature display mode. -
Page 33: Symptoms And Possible Causes - Remote Access Control Version
Unit blows breakers Short in system Drain plugged Drain tube kinked Getting water in enclosure Enclosure not sealed (allowing humidity in) Mounting gasket damaged For additional technical support, contact McLean Parts at 317-257-6811 89055585 © 2012 Pentair Technical Products - 33 -... - Page 34 Protecting Electronics. Exceeding Expectations.™ McLean Parts 5736 N Michigan Road Indianapolis, IN 46228 USA +1.317.257.6811 +1.317.257.1590 sales@mcleanparts.net McLeanParts.com Rev. I © 2012 Pentair Technical Products P/N 10-1008-243 89055585...
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