USER MANUAL
Series HC
Reference IR - 222
Rev 3
Page 41
10/17/2013
SECTION 5:
TROUBLESHOOTING & FAULTS
5.1
INTRODUCTION
Following proper preventive maintenance procedures will go far toward assuring
trouble-free dryer performance; however, failures will still occur. This
troubleshooting part will help to identify the source of the problem and to effect a
remedy.
5.2
HIGH DEW POINT
5.2.1
Changed Operating Conditions
Check to see that flow rate, pressure, and temperature are still within
specification.
5.2.2
Old Desiccant
If the dryer is not able to maintain dew point for a sufficiently long period, the
desiccant may have aged to the point where its capacity is inadequate. Replace
the desiccant with the appropriate quantity and type of desiccant.
5.2.3
Towers Not Reversing
Check PLC, solenoid valve, inlet switching valves, and, if supplied, Dew Point
Demand System meter.
5.2.4
Cooler Discharge Air Temperature Too High
Check cooling water flow rate and temperature. Fouled or dirty cooler may
require cleaning on air and/or water side.
5.2.5
Dew Point Indication In Error
Check calibration/operation of dew point measuring instrument.
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