Quincy Compressor QED 650, Instruction And Maintenance Manual

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Reference Name
102 Condensate separator
201 Non-return valve
202 Air-cooled condenser (air-cooled version)
203
Fan blower (air-cooled version)
*)
204 Thermostatic expansion valve
205 Pressure shut-down switch
206 Refrigerant dryer/filter
207 Liquid separator
208 Hot-gas by-pass valve
209 Refrigerant compressor
210 Solenoid valve
211 Sight-glass
212 Flow switch
213 Temperature switch
214 Pressure sensor
(air-cooled version)
301 Cubicle
401 Automatic drain
(1) Air
(2) Refrigerant
(3) Drain
(4) Water
(5) Mechanical link
(6) Electric power
(7) Electric signal
(8) Enclosure for several components assembled in one unit
*)
Second fan blower is installed on QED 1050
Description
Compressed air enters heat exchanger (101a) and is cooled by the outgoing, cold, dried air. Water in the
incoming air starts to condense. The air then flows through heat exchanger/evaporator (101b) where the
refrigerant evaporates causing the air to be further cooled to close to the evaporating temperature of the
refrigerant. More water in the air condenses. The cold air then flows through separator (102) where all the
condensate is separated from the air.
The condensate collects in the Electronic Water Drain (EWD) (401) and is automatically drained. The cold,
dried air flows through heat exchanger (101a), where it is warmed up by the incoming air to approx. 5 ˚C (9
˚F) below the incoming air temperature.
Condensation in the air net cannot occur unless the air is cooled to below the pressure dew-point indicated
on the control panel.
Instruction book
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