D-5
Z MED Medical Air System
4107 9022 67.00
D.4 Operation
D.4.1 Initial Start-Up
1. Close the dryer source isolation valve.
2. Switch on the electrical supply to the dryer.
3. CLOSE the dryer isolation valves. (2 inlet
valves, 2 outlet valves)
4. Check that the compressed air supply is
on
.
Let the system come up to pressure
5. Slowly OPEN the two dryer inlet isolation
valves.
6. Rotate the dryer selector switch to the “con-
tinuous purge” position. The dryer will now
begin to cycle.
7.
Check that purge air is flowing from the
purge muffler.
8. Slowly OPEN the two dryer outlet isolation
valves. (
Do Not Open Dryer Source Isolation
Valve
)
9. Open the dew point and CO sensor (if sup-
plied) isolation valves.
10.
Check for airflow at the dew point sensor ori
-
fice.
11. Adjust CO regulator (if supplied) to obtain a
flow rate of .5-.9 SCFM.
12.
Operate the dryer for five to ten minutes
with the source isolation valve
closed
.
13. During the conditioning run (see 11 above)
test all joints to check for any leaks. Tighten
or repair any leaks and retest.
NOTE:
Any small leaks on the dryer outlet
side will cause a deterioration of the dew
point.
14. Rotate the dryer selector switch to the “con-
trolled purge” position. Verify proper opera-
tion as described in D.2 or D.3.
15. On the completion of the conditioning run,
slowly open
the source isolation valve. The
dryer will now be fully operational.
Appendix D - Desiccant Dryer
D.4.2 Procedure to Switch Off the Dryer
1. Put second dryer on line by repeating steps
4 thru 7 above.
2. CLOSE the dryer outlet isolation valve.
3. SWITCH OFF the electrical supply to the dry-
er.
4. CLOSE the dryer inlet isolation valve. Dryer
should de-pressurize
WARNING:
Wait at least 2 minutes for pres-
sure in the dryer to decay before performing
any service to the dryer.
D.4.3 Normal Start-Up
This procedure is to be followed when the dryer
has been shut down for a short period during
which time the desiccant has not been exposed
to wet gas.
1. Start up the compressor if shut down.
2. Set the appropriate dryer selector switch to
controlled purge.
3. Slowly OPEN the dryer inlet isolation valve.
4. Slowly OPEN the dryer outlet isolation valve.
5. Check operation of the dryer.
D.4.4 Maintenance Shut-Down
1. CLOSE the dryer outlet isolation valve.
2. CLOSE the dryer inlet isolation valve.
3. Allow the dryer to continue to cycle until
the purge exhaust fully depressurizes both
chambers.
4.
Switch off electrical power to the dryer by
removing the fuse.
WARNING
:
Display prominent notices indicat-
ing that maintenance is being carried out.
Содержание Z MED Medical Air System
Страница 2: ......
Страница 4: ......
Страница 102: ...G 3 Z MED Medical Air System 4107 9022 67 00 Appendix G Oil Indicator FIG G 2 Conversion Chart for Oil Indication ...
Страница 103: ......
Страница 104: ...1059 Paragon Way Rock Hill SC 29730 888 4 MEDGAS 888 463 3427 Fax 803 817 5750 www beaconmedaes com ...