BeaconMedaes Z MED Medical Air System, Инструкции по установке, эксплуатации и обслуживанию

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D-12
Z MED Medical Air System
4107 9022 67.00
Problem Possible Causes Solution
Dewpoint
degrada-
tion
Incorrect purge air flow
Excessive system flow rate
Inlet air temperature is above
the dryer’s design inlet working
temperature
Liquids entering the dryer inlet
Purge muffler restricted
Desiccant is contaminated. The
“white” desiccant beads may ap-
pear discolored and dirty if con-
tamination has occurred
Union or other piping/component
leaks at dryer outlet manifold or
downstream of dryer outlet
Check purge orifice for blockage. Clean or replace as required.
Reduce inlet flow rate and/or increase operating pressure.
Check the compressor aftercooler and cooling system. Adjust as
necessary to bring the dryer inlet temperature to less than the
maximum design working temperature of 43°C (110°F).
Isolate and depressurize the pre-filter assembly. Inspect pre-filter
cartridges and end seals for loosening and/or damage. Tighten or
replace as necessary.
Inspect the pre-filter automatic drain valve. Ensure that it is not
clogged, and is draining properly. Repair or replace as necessary,
if a problem is noted.
Replace muffler
Shutdown and depressurize the dryer. Inspect the desiccant and
replace if fouled. Inspect any existing pre-filter if fouling is noted.
Soap test the dryer outlet manifold and piping downstream of
dryer. Repair all leaks noted.
Back pres-
sure on a
desiccant
chamber
during
regen-
eration
cycle. *
Dirty or fouled purge muffler
Outlet check valve leaking
Switch off power and remove purge muffler and clean
using an air nozzle, or replace.
Replace check valve
Appendix D - Desiccant Dryer
*NOTE:
The presence of backpressure will re-
sult in insufficient regeneration followed by
dew point degradation. An off-line chamber’s
pressure MUST be less than 3 psig throughout
all regeneration cycles.