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Need help?Do you have a question about the Neslab HX-500 and is the answer not in the manual?
Retain all cartons and packing material until the unit is operated and found to be in good condition.
The unit has a warranty against defective parts and workmanship for one full year from date of shipment.
Contact NESLAB's Sales or Service Department for questions concerning operation, spare parts, or service.
Read and understand all instructions and safety precautions before installing or operating the unit.
The HX Series Recirculating Chiller provides continuous flow of cooling fluid at constant temperature and volume.
Provides detailed technical specifications for various HX unit models, including dimensions and capacity.
Cooling capacity charts for HX-75 through HX-750 models based on fluid temperature and ambient conditions.
Performance curves for different pump types (CP, PD, TU) indicating flow and pressure relationships.
Guidelines for locating air-cooled units, including ambient temperature limits and ventilation clearance requirements.
Requirements for water-cooled units, focusing on facility cooling water supply and drain access.
Details on voltage, Hertz, phase, and plug types for different HX unit models.
Instructions for connecting the unit to the instrument and facility water supply, including fitting types.
Recommended cooling fluids, viscosity limits, and precautions regarding water and ethylene glycol mixtures.
Procedures for filling the fluid reservoir, ensuring correct fluid level and capacity.
Steps to purge air trapped in the pump head cavity for specific pump models.
Procedure for starting the unit, including pre-start checks and post-shutdown waiting periods.
How to set and maintain the desired fluid temperature using the calibrated dial and indicators.
Operation of the flow control handle to adjust cooling fluid flow rate to the instrument.
Location and function of the recirculating pressure gauge for monitoring system operating pressure.
Function of the adjustable pressure relief valve and when to contact service for adjustments.
How the high pressure cutout works and how to manually reset it after a fault.
Protection mechanism for the pump motor against excessive current, with auto-reset functionality.
Operation of the heater limit device, setting the temperature limit, and resetting a tripped fault.
Installation and adjustment of the External Pressure Reducer (EPR) for applications requiring lower pressure.
How the automatic refill device maintains the correct cooling fluid level in the reservoir.
Information on NESLAB's on-site service contracts for extended unit life and minimal downtime.
Importance of cleaning condenser fins for maintaining cooling capacity and preventing failure.
Recommendations to restrict algae growth in the fluid reservoir by keeping it opaque.
Procedure for cleaning the pump strainer to prevent debris from entering the pump.
Importance of correct phase rotation for three-phase units and how to correct it if the unit won't start.
Recommended lubrication schedule and type of oil for pump motors based on duty cycle.
Common troubleshooting steps for issues like unit not starting or not circulating fluid.
What information to have ready before contacting the Service Department for unresolved issues.
Schematic illustrating the refrigeration circuit for smaller HX models.
Schematic illustrating the refrigeration circuit for larger HX models.
Schematic illustrating the fluid flow path for units equipped with CP pumps.
Schematic illustrating the fluid flow path for units equipped with PD and TU pumps.
General| Temperature Stability | ±0.1 °C |
|---|---|
| Refrigerant | R-404A |
| Weight | 45 kg |
| Maximum Pressure | 3.4 bar (50 psi) |
| Pump Pressure | 3.4 bar (50 psi) maximum |
| Cooling Capacity | 500 W at 20°C |
