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Neslab HX Series Installation, Operation And Maintenance Manual

Analog recirculating chiller
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HX Analog
HX Analog
HX Analog
HX Analog
HX Analog
Recir
Recir
culating Chiller
culating Chiller
Recir
Recirculating Chiller
Recir
culating Chiller
culating Chiller
NESLAB Manual P/N 002023
and Maintenance Man
and Maintenance Manual
and Maintenance Man
and Maintenance Man
and Maintenance Man
Rev. 02/25/92
Installation, Operation,
Installation, Operation,
Installation, Operation,
Installation, Operation,
Installation, Operation,
ual
ual
ual
ual

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Summary of Contents for Neslab HX Series

  • Page 1 HX Analog Recir Recir culating Chiller culating Chiller Recir Recirculating Chiller Recir culating Chiller culating Chiller NESLAB Manual P/N 002023 Rev. 02/25/92 Installation, Operation, Installation, Operation, Installation, Operation, Installation, Operation, Installation, Operation, and Maintenance Man and Maintenance Man and Maintenance Manual...

  • Page 2: Table Of Contents

    HX Analog Recir HX Analog Recir HX Analog Recirculating Chiller culating Chiller culating Chiller culating Chiller HX Analog Recir HX Analog Recir culating Chiller Installation, Installation, Installation, Operation, Operation, Operation, and Maintenance Man Operation, and Maintenance Man and Maintenance Man and Maintenance Manual Installation, Installation,...
  • Page 3 SECTION V SECTION V SECTION V SECTION V SECTION V Special Features Special Features Special Features Special Features Special Features Pump Motor Overload Protector ............21 Optional Heater Package ..............22 External Pressure Reducer (Optional) ..........23 Automatic Refill Device (Optional) ............24 SECTION VI SECTION VI SECTION VI...

  • Page 4: Preface

    Warranty Warranty Warranty All NESLAB units are shipped with a warranty card. The top portion of the card remains with the unit. The bottom portion must be filled out and returned to NESLAB. The unit has a warranty against defective parts and workmanship for one full year from date of shipment.

  • Page 5: Warnings

    Never operate equipment with damaged power cords. Never operate equipment with damaged power cords. Refer service and repairs to a qualified NESLAB technician. Refer service and repairs to a qualified NESLAB technician. Refer service and repairs to a qualified NESLAB technician.

  • Page 6: Description

    Description Description Description The HX Series Recirculating Chiller is designed to provide a continuous flow of cooling fluid at a constant temperature and volume. The unit consists of an air-cooled or water-cooled refrigeration system, a fluid reservoir, a fluid recirculation pump, and a temperature controller.

  • Page 7: Specifications

    Specifications Specifications Specifications Specifications Specifications HX-75 HX-75 HX-75 HX-75 HX-75 HX-100 HX-100 HX-100 HX-100 HX-100 HX-150 HX-150 HX-150 HX-150 HX-150 Temperature Range Temperature Range Temperature Range Temperature Range Temperature Range +5°C to +35°C Temperature Stability Temperature Stability Temperature Stability Temperature Stability Temperature Stability ±0.1°C Unit Dimensions...

  • Page 8: Cooling Capacity

    Cooling Capacity Cooling Capacity Cooling Capacity Cooling Capacity Cooling Capacity Cooling capacity will vary depending on fluid temperature, ambient temperature, and cooling fluid. Cooling capacities for models HX-75 through HX-750 were obtained under the following conditions: air-cooled unit operating at +20°C (+68°F) ambient temperature. cooling fluid with specific heat of 1.0 was used for fluid temperatures from +5°C to +35°C.

  • Page 9: Pump Capacity

    HX-500 & 750 HX-500 & 750 HX-500 & 750 HX-500 & 750 HX-500 & 750 A=HX-750, 60Hz B=HX-750, 50Hz C=HX-500, 60Hz D=HX-500, 50Hz Fluid Temperature (°C) Pump Capacity Pump Capacity Pump Capacity Pump Capacity Pump Capacity HX units are available with one of three standard pump types: positive displacement (PD), centrifugal (CP), and turbine (TU).
  • Page 10 Bar PSI A=CP-25, 50Hz B=CP-25, 60Hz C=CP-55, 50Hz D=CP-55, 60Hz E=CP-75, 50Hz F=CP-75, 60Hz D, E 30 Gpm 18.9 37.9 56.8 60.5 94.6 113.6 Lpm FLOW TU-3, 5 & 6 TU-3, 5 & 6 TU-3, 5 & 6 TU-3, 5 & 6 TU-3, 5 &...

  • Page 11: Site (Air-Cooled Units)

    Section III Installation Section III Installation Section III Installation Section III Installation Section III Installation Site (Air-cooled Units) Site (Air-cooled Units) Site (Air-cooled Units) Site (Air-cooled Units) Site (Air-cooled Units) The unit should be located in a laboratory or clean industrial environment where ambient temperatures are inside the range of +55°F to +95°F (+13°C to +35°C).

  • Page 12: Site (Water-Cooled Units)

    Site (Water-cooled units) Site (Water-cooled units) Site (Water-cooled units) Site (Water-cooled units) Site (Water-cooled units) The unit should be located in a laboratory or clean industrial environment with easy access to a facility cooling water supply and a drain. All units are equipped with castors for easy movement. This allows the unit to be placed in a small area, as long as there is ample space for the unit to be moved for access on all four sides.
  • Page 13 Temperature of cooling water supply Temperature of cooling water supply Temperature of cooling water supply Temperature of cooling water supply Temperature of cooling water supply +55°F (+13°C) +55°F (+13°C) +55°F (+13°C) +65°F (+18°C) +65°F (+18°C) +65°F (+18°C) +75°F (+24°C) +75°F (+24°C) +75°F (+24°C) +85°F (+29°C) +85°F (+29°C)

  • Page 14: Electrical Requirements

    Electrical Requirements Electrical Requirements Electrical Requirements Electrical Requirements Electrical Requirements Refer to the table below to determine electrical requirements of your unit. Verify the requirements by reviewing the ratings listed on the serial number label on the rear of the case top or rear of analog temperature controller. HX-75 HX-75 HX-75...

  • Page 15: Plumbing Requirements

    The unit construction provides extra protection against the risk of The unit construction provides extra protection against the risk of The unit construction provides extra protection against the risk of The unit construction provides extra protection against the risk of The unit construction provides extra protection against the risk of electric shock by grounding appropriate metal parts.
  • Page 16 If substantial lengths of tubing are necessary, insulation may be required to prevent loss of cooling capacity. Tubing and insulation are available from NESLAB. Contact our Sales Department for more information (see Preface, After-sale Support). It is important to keep the distance between the unit and the instrument being cooled as short as possible, and to use the largest diameter tubing practical.

  • Page 17: Fluids

    Please contact NESLAB before subjecting this unit to prolonged Please contact NESLAB before subjecting this unit to prolonged Please contact NESLAB before subjecting this unit to prolonged...

  • Page 18: Filling Requirements

    Filling Filling Filling Filling Filling Requirements Requirements Requirements Requirements Requirements The reservoir cover is located at the left corner of the case top. Loosen the thumbscrews and remove the reservoir cover. Fill the fluid reservoir with cooling fluid to within 1 inch of the top. The fluid capacity of the instrument being cooled and the recirculation lines may be significant.

  • Page 19: Start Up

    Section IV Operation Section IV Operation Section IV Operation Section IV Operation Section IV Operation Start Up Start Up Start Up Start Up Start Up Before starting, check all electrical and plumbing connections and make sure the recirculating system (the HX, your application, and the recirculation lines) has been properly filled with cooling fluid.

  • Page 20: Flow Control

    Flow Control Flow Control Flow Control Flow Control Flow Control The flow control handle is connected to a valve that controls the flow rate of the cooling fluid to the instrument being cooled. The handle is located on the right side of the unit and is labelled RECIRCULATING FLOW CONTROL. RECIRCULATING PRESSURE gauge Flow Control Valve When the handle is in the “+”...

  • Page 21: Pressure Relief Valve (Pd And Tu Pumps Only)

    Pressure Relief Valve Pressure Relief Valve Pressure Relief Valve Pressure Relief Valve Pressure Relief Valve (PD and TU Pumps Only) (PD and TU Pumps Only) (PD and TU Pumps Only) (PD and TU Pumps Only) (PD and TU Pumps Only) Units with a PD-1, PD-2, or any TU type pump have an adjustable pressure relief valve.

  • Page 22: Special Features

    Section Section Section Section Section V Special Features V Special Features V Special Features V Special Features V Special Features Pump Motor Pump Motor Pump Motor Pump Motor Pump Motor Overload Protector Overload Protector Overload Protector Overload Protector Overload Protector Refer to the serial number label for the specific electrical requirements of your unit;...

  • Page 23: Optional Heater Package

    Optional Heater Optional Heater Optional Heater Optional Heater Optional Heater Package (Digital) Package (Digital) Package (Digital) Package (Digital) Package (Digital) A separate control box on top of the unit houses a heater high temperature limit device. This control box is labelled HEATER GUARD. On the front panel of the control box is a HEATER LIMIT °C setting knob, a RESET button, a HEAT indicator and a FAULT indicator.

  • Page 24: External Pressure Reducer (Optional)

    External Pressure External Pressure External Pressure External Pressure External Pressure Regulator (Optional) Regulator (Optional) Regulator (Optional) Regulator (Optional) Regulator (Optional) For applications requiring a maximum pressure less than 55 psi, an External Pressure Reducer (EPR) is available. An EPR allows an adjustable operating pressure of 10 to 50 psi.

  • Page 25: Automatic Refill Device (Optional)

    Connect this fitting to a make-up fluid source using inch ID flexible tubing. Make sure all tubing connections are securely clamped. Tubing is available from NESLAB. Contact our Sales Department for more information (see Preface, After-sale Support). AUTO REFILL - 24 -...

  • Page 26: Vi Maintenance

    Service Contracts Service Contracts Service Contracts Service Contracts NESLAB offers on-site Service Contracts that are designed to provide extended life and minimal down-time for your unit. For more information, contact our Service Department (see Preface, After-sale Support). Condenser Cleaning Condenser Cleaning...

  • Page 27: Vii Service

    Section Section VII Ser Section VII Ser VII Ser VII Service vice vice vice Section Section VII Ser vice For personal safety and equipment reliability, the following procedure For personal safety and equipment reliability, the following procedure For personal safety and equipment reliability, the following procedure For personal safety and equipment reliability, the following procedure For personal safety and equipment reliability, the following procedure should only be performed by a qualified technician.

  • Page 28: Phase Rotation

    Phase Rotation Phase Rotation Phase Rotation Phase Rotation Phase Rotation Refer to the serial number label on the rear of the controller for the specific electrical requirements of your unit; specifically, identify the phase requirements of your unit. Three phase units with three phase pump motors have a phase rotation interlock.

  • Page 29: Checklist

    Section Section Section Section Section VIII VIII VIII VIII T T T T T r r r r r oub VIII oubleshooting leshooting leshooting leshooting leshooting Checklist Checklist Checklist Checklist Checklist Unit will not start Unit will not start Unit will not start Unit will not start Unit will not start Check power source for correct voltage output.

  • Page 30: Refrigeration Flow (Hx-75 Through Hx-150)

    Section IX Dia Section IX Dia Section IX Diagrams grams grams grams Section IX Dia Section IX Dia grams Refrigeration Refrigeration Refrigeration Refrigeration Refrigeration Flow Diagram Flow Diagram Flow Diagram Flow Diagram Flow Diagram (HX-75 through HX-150) (HX-75 through HX-150) (HX-75 through HX-150) (HX-75 through HX-150) (HX-75 through HX-150)

  • Page 31: Pump Flow (Cp Pumps)

    Pump Flow Pump Flow Pump Flow Pump Flow Pump Flow Diagram (CP Pumps) Diagram (CP Pumps) Diagram (CP Pumps) Diagram (CP Pumps) Diagram (CP Pumps) Reservoir Flow Switch and Strainer (Optional) Check valve Pump Flow control valve Supply Return Pressure gauge Pump Flow Pump Flow Pump Flow...

  • Page 32: Warranty

    NESLAB Instruments, Inc. warrants for one (1) year from date of shipment any NESLAB unit according to the following terms. Any part of the unit manufactured or supplied by NESLAB and found in the reasonable judgement of NESLAB to be defective in material or workmanship will be repaired by an authorized NESLAB Service Center without charge for parts or labor.

This manual is also suitable for:

Hx-75Hx-100Hx-150Hx-200Hx-300Hx-500 ... Show all

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