Hypertherm DuraChill 5 HP Air-Cooled Chiller For Hypertherm - Manual (Page 7)

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Dual Float Switch — If fluid level should fall below the upper float switch (7 gallons low) the right hand display will
alternately show “EFL” and fluid temperature, Audible alarm will intermittently sound. This will continue indefinitely
until attended to.
If fluid level should fall below the lower float switch (9 gallons low) the right hand display will alternately show “EF2”
and fluid temperature, Audible alarm will intermittently sound and after a delay the unit will turn off.
DUAL FLOAT SWITCH = Part No.: 235-064
Flow Switch — Monitors internal recirculation flow. If flow rate is less than 4 gpm or fluid level in reservoir is below
lower float switch an alarm message - “EF2” is displayed and chiller turns off.
FLOW SWITCH = Part No.: 235-052
Strainer — Traps debris which could potentially clog the Evaporator.
RECIRCULATION PUMP ‘Y’ FILTER (3/4”) = Part No.: 400-710
PROCESS OUTLET ‘Y’ FILTER (1/2”) Part No.: 775-174
Bypass Valve — Used to prevent overloading of pump in the event that the process piping becomes restricted or
clogged. Diverts flow from process line back to Reservoir Tank.
200 PSI PRESSURE RELIEF VALVE = Part No.: 776-090
2.2.3 Cooling System
The condenser on your Chiller is air-cooled. The following components are common to all systems.
Common Cooling System Components
Evaporator — Serves as the heat exchanger between the refrigeration and fluid flow system. Cools fluid before it
returns to process.
BRAZED PLATE HEAT EXCHANGER = Part No.: 750-214
Compressor — The unit incorporates a 5-HP Copeland Scroll ® compressor. The Compressor is protected from
overloads through high and low refrigerant pressure cutouts.
5HP COMPRESSOR
200-230V 50/60Hz = Part No.: 750-833
380-460V 50/60HZ = Part No.: 750-813
575-600V 60HZ = Part No.: 750-832
Filter Dryer — Removes residual particulate and moisture from the refrigeration system. Must be replaced whenever
the sealed refrigeration lines are opened for service.
FILTER DRYER = Part No.: 750-229
Sight Glass — Used to observe refrigerant liquid flow to Evaporator.
SIGHT GLASS = Part No.: 750-230
Expansion Valve — Controls refrigerant superheat at the outlet of the Evaporator to prevent liquid from returning to
the compressor.
TXV (Thermostatic Expansion Valve) = Part No.: 750-814
Hot Gas Bypass Solenoid Valve — Injects refrigerant vapor into the Evaporator to stabilize temperature control when
operating at less than a full heat load.
SOLENOID VALVE = Part No.: 750-222
COIL = Part No.: 750-216
Refrigerant Relief Valve — Automatic safety used to vent refrigeration gas in the event that pressure exceeds a
factory set value. This valve is set to open at 650 PSI.
SAFETY RELIEF VALVE ¾ MPT (650PSI) = Part No.: 750-815