Thermal Care NQ Series Installation & Operation Manual
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Thermal Care NQ Series Installation & Operation Manual

Portable and remote condenser chillers
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Installation & Operation Manual
NQ Series Portable and Remote Condenser Chillers

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Summary of Contents for Thermal Care NQ Series

  • Page 1 Installation & Operation Manual NQ Series Portable and Remote Condenser Chillers...
  • Page 2 Page Intentionally Blank...
  • Page 3 Table of Contents Foreword ................................... 1 Safety Guidelines ................................2 General Data ..................................3 Table 1 – Air Cooled Chiller General Data (60 Hz) ......................... 3 Table 2 – Water Cooled Chiller General Data (60 Hz) ........................3 Table 3 – Remote Air Cooled Condenser Chiller General Data (60 Hz) ................. 4 Table 4 –...

  • Page 4: Table Of Contents

    Figure 31 – Water Cooled Condenser Pressure Drop Curve (20-Ton to 40-Ton) ............22 Installation – Remote Air-Cooled Condenser ......................23 Location ..........................................23 Mounted Legs and Lifting (5 - 10 ton Units) ............................23 Mounted Legs and Lifting (15 – 40 ton Units) ............................ 24 Interconnecting Refrigerant Piping .................................
  • Page 5 Table 18 – ModBus RTU Option Parameters (Integer Values) ....................51 Table 19 – ModBus RTU Option Parameters (Floating Point Values) ................... 52 Optional Controller Operation .............................54 Start-Up Screen & Thermal Care Contact Information ........................54 Main Screen ........................................54 Local/ Remote Button (Press to Toggle) ............................54 Start Button ........................................
  • Page 6 HGBP PID Button ....................................... 57 Compressor Setup Button ..................................57 Main ..........................................57 Process Diagnostic Screen ..................................58 I/O Status Button ....................................... 58 Alarms Button ......................................58 Setup Button ....................................... 58 Main ..........................................58 I/O Status Screen ......................................58 Output Designation Button ................................... 58 Input Status Button ....................................
  • Page 7 Foreword Failure to follow these instructions could result in a hazardous condition. The standard refrigerant used in these units is a hydro fluorocarbon (HFC) trade The portable chiller is a packaged unit typically named R-410A. We strongly recommend a consisting of a refrigeration circuit and a coolant refrigerant management program be implemented reservoir and pumping system in a compact which includes a survey of all equipment to...
  • Page 8 WARNING: Any use or misused of this equipment Safety Guidelines outside of the design intent may cause injury or harm. Observe all safety precautions during installation, start-up, and service of this equipment. The WARNING: Vent all refrigerant relief valves in accordance to ANSI/ASHRAE Standard 15, Safety following is a list of symbols used in this manual and Code for Mechanical Refrigeration.
  • Page 9 General Data Table 1 – Air Cooled Chiller General Data (60 Hz) Model NQA04 NQA05 NQA08 NQA10 NQA13 NQA15 NQA20 NQA25 NQA30 Cooling Capacity (tons) 11.0 12.5 14.9 20.9 25.6 30.6 Set Point Range (°F) 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 Refrigerant R410A R410A...
  • Page 10 Table 3 – Remote Air Cooled Condenser Chiller General Data (60 Hz) Model NQR05 NQR08 NQR10 NQR15 NQR20 NQR25 NQR30 NQR35 NQR40 Cooling Capacity (tons) 11.0 15.3 20.8 25.8 30.7 35.5 39.9 Set Point Range (°F) 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 20 to 80 Refrigerant R410A R410A...
  • Page 11 Pre-Installation quotation on repairs; however, filing the claim is the responsibility of the receiving party. Water-cooled chillers ship with a full refrigerant Receiving Inspection charge while remote condenser chillers ship with a When the unit arrives, verify it is the correct unit by nitrogen holding charge.
  • Page 12 Installation – Chiller condenser air inlet and condenser air discharge. They are not designed to have the condenser air Mechanical discharge ducted. Improper clearance or poor ventilation will reduce the cooling capacity of the chiller and may cause high refrigerant pressure Foundation problems.
  • Page 13 from the process. Typically, when piping is overhead All standard portable chillers include an internal with a total run length over 90 feet there should be a coolant pump and reservoir. Nominal coolant flow valve in the supply line and an inverted P trap with a rates assume a 10°F rise across the evaporator at vacuum break valve installed as shown in Figure 1.
  • Page 14 Figure 3 – 4 Ton High Flow Chiller Net Pump Performances (60 Hz) 4-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 5 hp 2-stage 1½ hp 3 hp 3 hp 2-stage...
  • Page 15 Figure 5 – 5 Ton High Flow Chiller Net Pump Performances (60 Hz) 5-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 3 hp 3 hp 5 hp 1½...
  • Page 16 Figure 7 – 7½ Ton High Flow Chiller Net Pump Performances (60 Hz) 7½-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 7½ hp 1½ hp 3 hp 5 hp Flow (gpm) Figure 8 - 10 Ton Chiller Net Pump Performances (60 Hz)
  • Page 17 Figure 9 – 10 Ton High Flow Chiller Net Pump Performances (60 Hz) 10-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 1½ hp 3 hp 5 hp 7½...
  • Page 18 Figure 11 – 13 Ton High Flow Chiller Net Pump Performances (60 Hz) 13-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 3 hp 1½ hp 5 hp 7½...
  • Page 19 Figure 13 – 15 Ton High Flow Chiller Net Pump Performances (60 Hz) 15-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 3 hp 5 hp 7½ hp Flow (gpm) Figure 14 - 20 Ton Chiller Net Pump Performances (60 Hz) 20-Ton Standard Chiller Net Pump Performance...
  • Page 20 Figure 15 – 20 Ton High Flow Chiller Net Pump Performances (60 Hz) 20-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 3 hp 10 hp 7½ hp 5 hp Flow (gpm) Figure 16 - 25 Ton Chiller Net Pump Performances (60 Hz)
  • Page 21 Figure 17 – 25 Ton High Flow Chiller Net Pump Performances (60 Hz) 25-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 10 hp 5 hp 7½ hp Flow (gpm) Figure 18 - 30 Ton Chiller Net Pump Performances (60 Hz) 30-Ton Standard Chiller Net Pump Performance...
  • Page 22 Figure 19 – 30 Ton High Flow Chiller Net Pump Performances (60 Hz) 30-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 10 hp 5 hp 7½ hp Flow (gpm) Figure 20 - 35 Ton Chiller Net Pump Performances (60 Hz) 35-Ton Standard Chiller Net Pump Performance...
  • Page 23 Figure 21 – 35 Ton High Flow Chiller Net Pump Performances (60 Hz) 35-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 10 hp 5 hp 7½ hp Flow (gpm) Figure 22 - 40 Ton Chiller Net Pump Performances (60 Hz) 40-Ton Standard Chiller Net Pump Performance...
  • Page 24 Figure 23 – 40 Ton High Flow Chiller Net Pump Performances (60 Hz) 40-Ton High Flow Chiller Net Pump Performance Pump Discharge Pressure Less Coolant Circuit Pressure Loss Based on Water at 50°F, 60 Hz 10 hp 5 hp 7½ hp Flow (gpm) Figure 24 –...
  • Page 25 Figure 25 – Chiller Coolant Circuit Pressure Drop (7½-Ton and 10-Ton) 7½-Ton and 10-Ton Chiller Coolant Circuit Pressure Drop (Based on Water at 50°F) 30.0 7½-ton 10-ton 7½-Ton 10-Ton Std Flow Std Flow High Flow High Flow 25.0 20.0 15.0 10.0 10.0 20.0...
  • Page 26 Figure 27 – Chiller Coolant Circuit Pressure Drop (20-Ton and 25-Ton) 20-Ton and 25-Ton Chiller Coolant Circuit Pressure Drop (Based on Water at 50°F) 30.0 20-ton 25-ton 20-Ton 25-Ton Std Flow Std Flow High Flow High Flow 25.0 20.0 15.0 10.0 20.0 40.0...
  • Page 27 Figure 29 – Chiller Coolant Circuit Pressure Drop (40-Ton) 40-Ton Chiller Coolant Circuit Pressure Drop (Based on Water at 50°F) 30.0 40-ton 40-Ton Std Flow High Flow 25.0 20.0 15.0 10.0 50.0 70.0 90.0 110.0 130.0 150.0 170.0 190.0 210.0 230.0 250.0 Flow (gpm)
  • Page 28 Figure 30 – Water Cooled Condenser Pressure Drop Curve (5-Ton to 15-Ton) Condenser Water Circuit Pressure Drop (Based on Water @ 85°F) 45.0 5-Ton 15-Ton 7½-Ton & 40.0 10-Ton 35.0 30.0 25.0 20.0 15.0 10.0 15.0 25.0 35.0 45.0 55.0 65.0 Condenser Water Flow (gpm) Figure 31 –...

  • Page 29: Installation - Remote Air-Cooled Condenser

    Installation – Remote Air- Cooled Condenser Chillers designed for use with a remote air-cooled condenser include a factory-selected remote condenser. The remote air-cooled condenser ships separately and in most cases will ship from a different location than the chiller so it will most likely be on a separate truck shipment from the chiller.

  • Page 30: Mounted Legs And Lifting (15 - 40 Ton Units)

    Mounted Legs and Lifting (15 – 40 ton installing contractor need only provide the interconnecting piping between the chiller and the Units) air-cooled condenser. The unit ships on its side with the legs removed to reduce shipping dimensions and provide more Refrigerant piping size and piping design have a protection to the coil from possible damaged caused significant effect on system performance and...
  • Page 31 certain physical limitations to ensure the system Discharge line risers cannot exceed an elevation operates as designed. difference greater than 100 actual feet without a minimum of 2% efficiency decrease. General design considerations are: To form a proper liquid seal at the condenser, The total distance between the chiller and the immediately drop at least 15 inches down from air-cooled condenser must not exceed 200...

  • Page 32: Determining Equivalent Line Length

    Figure 34 - Condenser Located Below Chiller Unit Chiller 10' MAX Caution: Liquid line sizing for each chiller capacity is in Table 6. These line sizes are listed per circuit and apply where leaving water temperature (LWT) is 40°F or higher. For applications where the LWT is below 40°F, size lines using the ASHRAE Refrigeration Handbook or other suitable design guide.

  • Page 33: Liquid Line Sizing

    Table 5 – Equivalent Lengths of Fittings Equivalent Lengths of Refrigerant Pipe (feet) Line Elbow Size Elbow Elbow Elbow Elbow 90° 90° 90° 45° 45° Long (in) Standard Street Standard Street Radius ⅞ 1⅛ 1⅜ 1⅝ 2⅛ 2⅝ 10.0 3⅛ 12.0 3⅝...
  • Page 34 Table 6 – Liquid Line Sizes for R410A 5 Ton Circuit (R410A) 7½ Ton Circuit (R410A) Liquid Line Size (Inch OD) Liquid Line Size (Inch OD) Total Total Equivalent Horizonta Horizonta Equivalent Upflow Upflow Upflow Upflow Upflow Upflow Length Length 1 to 5 6 to 10 11 to 15...
  • Page 35 Table 6 – Liquid Line Sizes for R410A (continued) 20 Ton Circuit (R410A) 25 Ton Circuit (R410A) Liquid Line Size (Inch OD) Liquid Line Size (Inch OD) Total Total Equivalent Horizonta Horizonta Equivalent Upflow Upflow Upflow Upflow Upflow Upflow Length Length 1 to 5 6 to 10...

  • Page 36: Discharge (Hot Gas) Line Sizing

    Table 6 – Liquid Line Sizes for R410A (continued) Figure 35 – Vertical Riser Traps 40 Ton Circuit (R410A) VERTICLE UPFLOW DISCHARGE RISER Liquid Line Size (Inch OD) Total Equivalent Horizontal Upflow Upflow Upflow REVERSE Length 1 to 5 6 to 10 11 to 15 TRAP (Ft)
  • Page 37 Figure 36 - Double Discharge Riser PITCH TO CONDENSER REDUCING FROM CHILLER 90 DEGREE 45 DEGREE STREET ELBOWS STREET ELBOWS Note: Discharge line sizing shown in Table 7 and Table 8 are listed per circuit and applies where leaving water temperature (LWT) is 40°F or higher.

  • Page 38: Calculating System Refrigerant And Oil Charge

    Calculating System Refrigerant and Oil Charge To determine the approximate charge, first refer to Table 9 and establish the require charge for the condenser and chiller. Then refer to Table 10 to determine the charge required for the field-installed piping per circuit. The approximate charge per circuit is therefore the sum of the values from Table 9 and Table 10.

  • Page 39: Installation - Electrical

    Installation - Electrical leads that are from the unit contactors or the motor terminals. All wiring must comply with local codes and the WARNING: This equipment contains hazardous National Electric Code. Minimum circuit amps (MCA) voltages that can cause severe injury or death. and other unit electrical data are on the unit nameplate.
  • Page 40 Table 12 – Air Cooled Chiller Electrical Data (60 Hz) Compressor Data Condenser Fan Data Pump Process Allowable Unit Data Rated Model Pump Power Data Comp 1 Comp 2 Fan 1 Fan 2 Fan 2 Voltage Size MOPD None 230/3/60 16.0 110.0 25.4...
  • Page 41 Table 12 - Air Cooled Chiller Electrical Data (60 Hz) - continued Compressor Data Condenser Fan Data Pump Process Allowable Unit Data Rated Model Pump Power Data Comp 1 Comp 2 Fan 1 Fan 2 Fan 2 Voltage Size None 230/3/60 48.1 245.0...
  • Page 42 Table 12 - Air Cooled Chiller Electrical Data (60 Hz) - continued Compressor Data Condenser Fan Data Pump Process Allowable Unit Data Rated Model Pump Power Data Comp 1 Comp 2 Fan 1 Fan 2 Fan 2 Voltage Size None 230/3/60 55.8 340.0...
  • Page 43 Table 12 - Air Cooled Chiller Electrical Data (60 Hz) - continued Compressor Data Condenser Fan Data Pump Process Allowable Unit Data Rated Model Pump Power Data Comp 1 Comp 2 Fan 1 Fan 2 Fan 2 Voltage Size None 230/3/60 51.3 300.0...
  • Page 44 Table 13 – Water Cooled & Remote Air Cooled Condenser Chiller Electrical Data (60 Hz) Compressor Data Process Allowable Power Pump Unit Data Rated Model Pump Supply Data Comp 1 Comp 2 Voltage Size None 230/3/60 19.0 123.0 26.3 45.3 1.5 HP 230/3/60 19.0...
  • Page 45 Table 13 – Water Cooled & Remote Air Cooled Condenser Chiller Electrical Data (60 Hz) - continued Compressor Data Process Allowable Power Pump Unit Data Rated Model Pump Supply Data Comp 1 Comp 2 Voltage Size None 230/3/60 48.1 245.0 62.6 110.7 1.5 HP...
  • Page 46 Table 13 – Water Cooled & Remote Air Cooled Condenser Chiller Electrical Data (60 Hz) - continued Compressor Data Process Allowable Power Pump Unit Data Rated Model Pump Supply Data Comp 1 Comp 2 Voltage Size None 230/3/60 33.3 239.0 33.3 239.0 77.4...
  • Page 47 Table 13 – Water Cooled & Remote Air Cooled Condenser Chiller Electrical Data (60 Hz) – continued Compressor Data Process Allowable Power Pump Unit Data Rated Model Pump Supply Data Comp 1 Comp 2 Voltage Size None 230/3/60 55.8 340.0 55.8 340.0 128.1...
  • Page 48 Table 14 – Remote Air Cooled Condenser Electrical Data (60 Hz) Main Power Variable-Speed Fan Constant-Speed Fans Chiller (3-phase, 60 Hz) (1-phase) (3-phase) Model Total Model Used Allowable Motor Motor Rated With (hp) Each (hp) Each ½ KCM009 NQR05 ½ ½...

  • Page 49: Standard Controller Operation

    Standard Controller Operation Stop Button Depressing the Stop button will shut off the compressor, pump, condenser fans (if the chiller is air-cooled), and clear all fault signals. If the Autostart feature is enabled and an Autostart signal present, the Stop button will not stop the chiller. See the Program Menu section for instructions on how to enable or disable the Autostart feature.

  • Page 50: Pump Running Hours Button

    increases the set point temperature until reaching Pump Running Hours Button the maximum allowable set point temperature. In addition to adjusting the set point temperature, the Press and hold the Pump Running Hours Button to Up Arrow button adjusts various alarms and set display the amount of time the pump has run.

  • Page 51: Pump Led

    Pump LED Compressor #2 LED The Pump LED is solid green while in normal running operation. It will flash red if the overload safety trips. The Compressor #2 LED is solid green while Compressor #2 is running. Compressor #2 is only present on chillers 20 tons and larger.

  • Page 52: Freezestat Led

    light. Pressing the Alarm Reset button will reset the Freezestat LED Low Refrigerant Pressure fault, as long as the refrigerant pressure has risen back up above the If the coolant temperature delivered to the process safety's cutout level. drops below the Freezestat Limit (FLS) setting, the compressor will shut off, the pump will remain running, and the Freezestat LED will light.
  • Page 53 To access the programming menu the unit must be To change an item, press the Display/Program in a stopped state. Once the unit is stopped, press button until the item code displays in the Process and holding the Display/Program button for 5 display.
  • Page 54 Table 15 - Controller Program Menu Item Name Item Code Default Value Range Alarm Delay - High Deviation 10 to 60 Alarm Delay - Low Deviation 10 to 60 Autostart Enabled Disabled (DIS) or Enabled (EnA) Brownout Enabled Disabled (DIS) or Enabled (EnA) Comm Baud Rate 12 to 96 Comm Modbus ID...
  • Page 55 Table 16 – Controller Control Fault Logic Pump Alarm Manual Remote Alarm Compressor Fault Shut Reset Reset Alarm Indication Shut Off Required Required Activated Low Reservoir The Reservoir Level Light flashes red Level Temperature Limit The Set Point and Process Safety Temperatures Flash and the Temperature Limit Light flashes red...

  • Page 56: Spi Communications (Optional)

    SPI Communications (Optional) Units ordered with this option will have this feature activated at the factory. If for some reason this Several members of SPI: The Plastics Industry Trade feature is inactivate it may be active using the Association defined a communications standard to program menu Communication Type function.

  • Page 57: Modbus Rtu (Optional)

    Table 17 - SPI Parameters (continued) Command Poll Select Description Status, Machine 1 20 42 This is the machine status in a 16 bit format as follows: 0 = Controlling 1 = An alarm is present 2 = An alarm affecting the process has occurred (high temperature deviation or low temperature deviation) 3 = An alarm affecting the machine operation has occurred (probe fault or pump fault)
  • Page 58 Table 18 – ModBUS RTU Option Parameters (Integral Values) - continued Description Read/Write Notes 4011 LOW ALARM DELAY 4012 HI ALARM DELAY 4013 DISPLAY UNITS 0 = Deg F, 1 = Deg C 4014 CONTROLLER TYPE 0 = TCU, 1 = Chiller 4015 BROWNOUT ENABLED 0 = DISABLED, 1 = ENABLED...
  • Page 59 Table 19 – ModBus RTU Option Parameters (Floating Point Values) - continued Description Read/Write Notes 8028 NOT USED 8030 ZERO CAL CHAN 0 8032 ZERO CAL CHAN 1 8034 ZERO CAL CHAN 2 8036 ZERO CAL CHAN 3 8038 SPAN CAL CHAN 0 8040 SPAN CAL CHAN 1 8042...

  • Page 60: Optional Controller Operation

    If “Local” shows on the button, the chiller starts and stops from this screen using the Start and Stop As an option, the NQ Series is available with a Buttons. If “Remote” shows on the button, the chiller Programmable Logic Controller (PLC) and touch- starts and stops by remote contacts.

  • Page 61: Active Alarms Screen

    Active Alarms Screen Alarm History Screen This screen displays the most recent alarms. This screen displays all active alarms and provides the ability to reset alarms and navigate to the Alarm Up and Down Buttons History screen. Touching the Up or Down button scrolls through the available alarms in the alarm history table.

  • Page 62: Compressor Setup Screen

    Compressor Setup Screen Process Setup Screen This screen displays and allows adjustment of The process setup screen displays and allows various compressor control parameters. adjustment of the temperature alarms. The Compressor Setup screen is password protected. The Process Setup Screen displays and allows for the If password protected a prompt appears requesting adjustment of the high and low temperature the password.

  • Page 63: Hot Gas Bypass Screen Pid Tuning Screen

    Hot Gas Bypass Screen PID Tuning Freezestat Setup Screen Screen This screen displays and allows adjustment of the Freezestat settings. This screen displays and allows adjustment of the PID parameters of the hot gas bypass valve. The Freezestat is a freeze protection safety that shuts down the chiller if the coolant temperature gets to In almost all situations, the factory loaded PID values cold.

  • Page 64: Process Diagnostic Screen

    Process Diagnostic Screen I/O Status Screen This screen displays the operating status of the This screen shows the digital inputs and outputs coolant temperature, pump status, and the hot gas from the chiller PLC. A “0” represents OFF while “1” bypass valve position as a percentage of full open.

  • Page 65: Refrigeration Diagnostic Screen

    Refrigeration Diagnostic Screen refrigeration technician and must be followed in sequence. If trouble is encountered the fault can This screen displays the operating status of the set usually be traced to one of the control or safety point and actual temperatures, hot gas bypass valve devices.

  • Page 66: Step 1 - Connect Main Power

    Step 1 - Connect Main Power build up can attest to that. Source waters available for make-up use have an almost unlimited chemistry Connect main power properly ensuring it matches variation. the voltage shown on the nameplate of the unit. Check the electrical phase sequence prior to start- To avoid the unwanted side effects associated with up.

  • Page 67: Step 3 - Check Condenser

    CAUTION: When your application requires the sensing, measurement and treatment needed for use of glycol, use industrial grade glycol satisfactory performance and life. The specifically designed for heat transfer systems recommendations of the specialist may include and equipment. Never use glycol designed for filtration, monitoring, treatment and control devices.

  • Page 68: Step 4 - Check Refrigerant Valves

    Note: The compressor will not start as long as the flow switch Step 4 – Check Refrigerant Valves is open. A positive flow must be established through the During shipment or installation it is possibe valves evaporator before the compressor can operate. where closed.

  • Page 69: Preventive Maintenance

    CAUTION: A clear sight glass alone does not stays more than 5°F away from the set point, mean that the system is properly charged. Also, there may be a problem with the chiller. If this is check system superheat, sub-cooling, and unit the case, refer to the Troubleshooting Chart or operating pressures.

  • Page 70: Preventive Maintenance Checklist

    Preventive Maintenance Checklist Week Number Maintenance Activity Date Clean Condenser Coil and Inlet Filter (air cooled units) Temperature Control Pump Discharge Pressure Coolant Level Glycol Concentration Pump Seal Refrigerant Sight Glass Electrical Connections Incoming Voltage Compressor #1 L1 Amps Compressor #1 L2 Amps Compressor #1 L3 Amps Compressor #2 L1 Amps Compressor #2 L2 Amps...

  • Page 71: General Troubleshooting

    General Troubleshooting Problem Possible Cause Remedy Compressor will not Compressor overload Check supply voltage, amperage of each leg, start contactor and wiring, and overload set point Compressor contactor Replace if faulty Compressor failure Contact Customer Service for assistance Pump will not start Pump overload Check supply voltage, amperage of each leg, contactor and wiring, and overload set point...

  • Page 72: Drawings

    Problem Possible Cause Remedy Erratic temperature Low coolant flow through evaporator Adjust flow to proper level control Intermittent overloading of chiller capacity Check to make sure chiller is properly sized for process load Hot gas bypass valve Contact refrigeration service technician Temperature sensor Replace if faulty Insufficient cooling...

  • Page 73: Warranty

    Thermal Care's obligation is limited to repair (i.e. rewind a motor) or replacement (not adjustment or maintenance), F.O.B. the factory of any parts supplied by Thermal Care within a period as shown below from the date of shipment to the original purchaser.

  • Page 74: Extended 5 Year Compressor Warranty - (Optional)

    Thermal Care’s obligation is limited to repair or replacement (not adjustment or maintenance), F.O.B. the factory of the compressor supplied by Thermal Care within a period five (5) years from the date of shipment to the original purchaser. This warranty applies to the cost of parts. Labor to replace the compressor is limited to twelve (12) months from the date of shipment.
  • Page 75 Notes...
  • Page 76 Thermal Care, Inc. New Equipment Sales Customer Service Parts 7720 North Lehigh Ave. Phone (847) 966-2260 Phone (847) 966-2636 Phone (847) 966-8560 Niles, IL 60714-3491 (847) 966-9358 (847) 966-2906 (847) 966-6065 www.thermalcare.com info@thermalcare.com service@thermalcare.com tcparts@thermalcare.com NQ Series IOM 2-332.18 May 2015...

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