INSTALLATION, START-UP & MAINTENANCE MANUAL
MODEL NO.: SD-820 / SD-1710
REV 1 – AUGUST 03,.2001
Page 12
SECTION 3 START UP AND OPERATION
3.1 START UP/ SHUT DOWN
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 pre-filter, 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 the
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warranty
obligation.
* Advices
The following sequence is to be heeded for the initial start-up:
•
Slowly open the inlet valve and observe the pressure build-up on the
chamber pressure gauges of the adsorption dryer. A too abrupt pressure
build-up is to be avoided
•
Turn the switch to the "POWER ON" position..
•
The adsorption dryer must be powered approx. 3-4 h with the shut off valve
behind the after-filter closed; this regenerates the desiccant.
•
After the regeneration phase, open the shut off valve behind the after-filter
slowly while observing the chamber pressure gauge; if the shut off valve is
opened too abruptly, it could put a stress on the system.
•
The adsorption dryer is now ready for operation and functions continuously
and fully automatically.
3.2 DESCRIPTION OF THE OPERATION
The
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adsorption dryer of the series SD-820 – SD-1710 functions according to
the pressure change principle, using dry air regeneration. Two adsorption vessels filled
with desiccant are installed parallel to each other for this purpose. While the medium
is being dried in one vessel, regeneration takes place in the other vessel. The
changeover from one vessel to the other is performed in a fixed rhythm by means of a
time-dependent control system. The adsorption dryer operates continuously and fully
automatically.
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