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reductions must be made, they should be made at the inlet and outlet of the
instrument being cooled, not at the HX.
If substantial lengths of connecting tubing are required, they should be
pre-filled with cooling fluid before connecting them to the unit.
Water-cooled unitsWater-cooled units
Water-cooled unitsWater-cooled units
Water-cooled units
The plumbing connections used to connect the water-cooled condenser in
the HX to the facility cooling water supply are located at the rear of the unit
(labelled TAP WATER and DRAIN). On models HX-75 through HX-300,
these fittings are ½ inch FPT. On models HX-500 and HX-750, these fittings
are 1 inch FPT.
Remove the plastic protective plugs from the TAP WATER and DRAIN
connections. Connect the TAP WATER fitting to the facility cooling water
supply. Connect the DRAIN fitting to a drain.
FluidsFluids
FluidsFluids
Fluids
The selected cooling fluid must have a viscosity of 50 centistokes or less at
the lowest operating temperature.
Never use flammable or corrosive fluids with this unit. Distilled andNever use flammable or corrosive fluids with this unit. Distilled and
Never use flammable or corrosive fluids with this unit. Distilled andNever use flammable or corrosive fluids with this unit. Distilled and
Never use flammable or corrosive fluids with this unit. Distilled and
deionized water may be aggressive and cause material corrosion.deionized water may be aggressive and cause material corrosion.
deionized water may be aggressive and cause material corrosion.deionized water may be aggressive and cause material corrosion.
deionized water may be aggressive and cause material corrosion.
Please contact NESLAB before subjecting this unit to prolongedPlease contact NESLAB before subjecting this unit to prolonged
Please contact NESLAB before subjecting this unit to prolongedPlease contact NESLAB before subjecting this unit to prolonged
Please contact NESLAB before subjecting this unit to prolonged
exposure to distilled or deionized water.exposure to distilled or deionized water.
exposure to distilled or deionized water.exposure to distilled or deionized water.
exposure to distilled or deionized water.
Tap water is the recommended fluid for operation from +8°C to +35°C.
Below +8°C, a non-freezing solution is required. A 50/50 mixture, by
volume, of water and laboratory grade ethylene glycol is suggested.
Do not use automobile anti-freeze. Commercial anti-freeze containsDo not use automobile anti-freeze. Commercial anti-freeze contains
Do not use automobile anti-freeze. Commercial anti-freeze containsDo not use automobile anti-freeze. Commercial anti-freeze contains
Do not use automobile anti-freeze. Commercial anti-freeze contains
silicates that can damage the pump seals. Use of automobilesilicates that can damage the pump seals. Use of automobile
silicates that can damage the pump seals. Use of automobilesilicates that can damage the pump seals. Use of automobile
silicates that can damage the pump seals. Use of automobile
anti-freeze will void the manufacturer’s warranty.anti-freeze will void the manufacturer’s warranty.
anti-freeze will void the manufacturer’s warranty.anti-freeze will void the manufacturer’s warranty.
anti-freeze will void the manufacturer’s warranty.
For units with extended temperature ranges above +35°C, tap water is the
recommended fluid up to +80°C. Above +80°C, the user is responsible for
the fluid(s) used.
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