USER MANUAL
Series HC
Reference No. 145 Final Rev 5
Page 24
September 2004
SECTION 3:
START UP AND OPERATION
3.1
START UP
Attention!
All pipes and wire connections are to be tightened!
Furthermore, before start-up:
−
The pipes must be checked for the presence of scale
,
abraded material from the threading, or other similar
impurities.
−
All shut off valves on the adsorption dryer, after-filter
and on the bypass line should be closed.
−
The ambient temperature must not be less than 33°F.
Breakdowns resulting from faulty installation do not fall under
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warranty obligation.
3.1.1
Pressurizing dryer
•
Prior to pressurizing the
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Series HC Dryer system, verify the
following
:
-
Dryer On – Off switch is in the off position.
-
System outlet block valve is closed.
-
Cooling water is turned on to the aftercooler.
•
Slightly open the inlet isolation valve slowly admitting compressed air to the
system. When full system operating pressure has been reached all
connections should be soap bubble tested for leaks. Any leaks should be
repaired and retested prior to placing the equipment in service. If some gas
other than the process air will be used for leak testing, consult
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for its compatibility with system components before proceeding. Fully open
the inlet isolation valve.
•
When the system is filled with process air, is leak tight and start-up is
completed, then slowly open the system outlet valve to pressurize the
downstream piping. During the procedure, ensure that the dryer system
pressure does not fall below 95% of its reading prior to opening the system
outlet valve. This will protect the equipment internal components (i.e. filter
elements, desiccant) from gas velocities above design conditions.
