CompAir UK Ltd
APP 202 3 U.D.S. VALVE ASSEMBLY
Page 2
APP202.DOC
UNLOADER DRAIN VALVE SYSTEM
OPERATION
Low pressure air (1st stage) is fed to a normally closed solenoid valve which when the compressor is running
is energised to the open position, this in turn holds the unloader valves closed by means of a diaphragm
pushing against the valve plates, these are connected ether to the separators or filtration units drain outlets.
On shut down the solenoid de-energises, air is shut off, any excess being vented into the casing. The
pressure on the diaphragms is released allowing the valves to open, air/condensate is discharged into the
casing/vessel and then into a suitable receptacle.
On start up, the solenoid valve re-opens and as the pressure builds up the valves close and the cycle
repeats itself on shutdown.
For continuous running a plug in timed drainage system can be used, a signal is passed to the solenoid
valve every 30 minutes this closes the valve for 5 to 6 seconds duration and allows the drains to blow all
condensate collected. Note: In
HIGH AMBIENT/HUMIDITY AREAS
it is recommended that the drainage
cycle time be more frequent contact
CompAir UK Ltd - Customer Service Fax No. +44 (0) 1473 556027
for more details.
The solenoid re-opens for normal operation.
TYPICAL DRAIN SYSTEM LAYOUT D100800
Rc ¼” DRAIN FROM 1
st
STAGE SEPARATOR
Rc ¼” DRAIN FROM 2
nd
STAGE SEPARATOR
Rc ¼” DRAIN FROM 3
rd
STAGE SEPARATOR
CONDENSATE DISCHARGE
Rp 1 ¼”
FROM 1st STAGE
SOLENOID VALVE
Summary of Contents for 5280D.1.IAC
Page 3: ...DATE REMARKS DATE REMARKS logsheet5280 d...
Page 9: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 6 1440 doc...
Page 29: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 26 1440 doc...
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Page 44: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 38 1440 doc CRANKCASE 1...
Page 46: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 40 1440 doc CRANKCASE 2...
Page 48: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 42 1440 doc CRANKCASE 3...
Page 50: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 44 1440 doc CYLINDER 1st STAGE...
Page 52: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 46 1440 doc SUCTION VALVE COVER...
Page 60: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 54 1440 doc CROSSHEAD 1st STAGE...
Page 62: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 56 1440 doc PISTON 1st STAGE...
Page 64: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 58 1440 doc GLAND 1st STAGE...
Page 66: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 60 1440 doc OIL PUMP...
Page 68: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 62 1440 doc OIL PUMP FILTER...
Page 70: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 64 1440 doc INTERCOOLER...
Page 72: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 66 1440 doc 1st STAGE PIPE WORK...
Page 74: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 68 1440 doc...
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Page 94: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 72 1440 doc...
Page 98: ...App 408 Customer PET controller installation guide user s manual Page 2 App 408C 98155 1015...
Page 120: ...CompAir UK Ltd APP 004 ANTI VIBRATION MOUNTS Page 2 app004 doc...
Page 122: ...CompAir UK Ltd PUBLICATION APP070 PRESSURE GAUGES GENERAL Page 2 app070 doc...
Page 128: ...CompAir UK Ltd PUBLICATION APP 138 3 WAY SOLENOID VALVES PS2197 Page 2 app138 doc...
Page 130: ...CompAir UK PUBLICATION APP034 ELECTRIC MOTOR MAINTENANCE GENERAL Page 2 APP034 doc...
Page 133: ...CompAir UK Ltd 5280D Compressor Publication 98407 1440 Page 74 1440 doc...