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7
Problem solving
7.1
Problem solving
Valve on inlet collector
Attention
Use only authorized parts. Any damage or malfunction caused by the use of unauthorized
parts is not covered by Warranty or Product Liability.
Apply all relevant
Safety precautions
.
Before carrying out any maintenance or repairs on the dryer, stop the dryer and switch off
the voltage.
Open the isolating switch to prevent an accidental start.
Isolate the dryer from the air net and depressurize by opening valve (5) on inlet collector
(6).
Faults and remedies (general)
Condition
Fault
Remedy
-
Pressure dew-point too high
Air inlet temperature too high
Check and correct; if necessary,
install a pre-cooler
Ambient temperature too high Check and correct; if necessary, draw
cooling air via a duct from a cooler
place or relocate dryer
Air inlet pressure too low
Increase inlet pressure
Dryer capacity exceeded
Reduce air flow
Shortage of refrigerant
Have circuit checked for leaks and
recharged
Refrigerant compressor does
not run
See below
Evaporator pressure too high
See below
Condenser pressure too high
See below
Automatic drain system
clogged
Have the system cleaned
-
Condenser pressure too high
or too low on air-cooled dryers
Fan control switch out of order Replace
Fan or fan motor out of order
Check fan/fan motor
Ambient temperature too high Check and correct; if necessary, draw
cooling air via a duct from a cooler
place or relocate dryer
Condenser externally clogged Clean condenser
-
Compressor stops or does not
start
Electric power supply to
compressor is interrupted
Check and correct as necessary
Instruction book
90
2920 1818 00
Summary of Contents for QED 650
Page 5: ...9 Pressure equipment directives 96 Instruction book 4 2920 1818 00...
Page 12: ...General view of QED 850 Instruction book 2920 1818 00 11...
Page 14: ...Position of components Inside view of QED 650 Instruction book 2920 1818 00 13...
Page 15: ...Inside view of QED 850 Instruction book 14 2920 1818 00...
Page 26: ...Electrical diagram QED 650 Instruction book 2920 1818 00 25...
Page 27: ...Electrical diagram QED 850 and QED 1050 Instruction book 26 2920 1818 00...
Page 78: ...Dimension drawing of QED 850 Instruction book 2920 1818 00 77...
Page 98: ......
Page 99: ...Cod 2920 1818 00 Edition 09 2012 quincycompressor com info quincycompressor com 217 222 7700...