Sullair SD Series - High Dew Point Causes and Solutions

INSTALLATION, START-UP & MAINTENANCE MANUAL
MODEL NO.: SD-820 / SD-1710
REV 1 – AUGUST 03,.2001
Page 47
SECTION 7 TROUBLE SHOOTING & FAULTS
7.1 THE DEW POINT IS TOO HIGH
Possible cause Solution
•
Operating pressure too low,
air flow capacity too high
⇒
Increase operating pressure, reduce air
flow capacity
•
Air inlet temperature too high
⇒
Reduce temperature, or connect an air
cooler upstream
•
Differential pressure at the pre-filter
too high
⇒
Check filter element for impurities, change
if necessary
•
Condensate drain is not functioning
⇒
Check operation of the condensate drain
and replace if necessary
•
Desiccant is soiled or
has disintegrated
⇒
Check pre-filter for impurities and either
change the filter element and change the
complete desiccant and dispose of the old
desiccant
•
Volume of regeneration gas too low
⇒
Check regeneration purge adjustment is
set in accordance with table 5.3