Page 2 SB-6-176
MAINTENANCE
Risk of injury. Components un-
der pressure. Relieve air pres-
sure before performing any
maintenance.
1.
Check system at least once per shift
to insure proper drainage. Look for
water in the drain tubing.
2.
Before performing maintenance on
system, close main shut-off valve
located upstream. Bleed off residual
air in system.
Figure 1 DAD-500 /DAD-504
Replace-
Ind.
Ref. ment
Parts
No. Part No.
Description
Req.
1
HAF-517
Charcoal Filter
1
2
SSP-456
Nipple
1
3
HAR-508
Flow-Thru Regulator
1
4
GA-316
Gauge
1
5
MPV-424 Breathable Air Quick
1
Release Socket
PARTS LIST
INSTALLATION – RETRO FIT KIT
1. Be sure to read all
"Cautions"
and
"Warnings"
in this manual and on the
unit before installation or using this
equipment.
2. This unit is designed to fit a DeVilbiss
DAD-500 desiccant air dryer. Installa-
tion on non-DeVilbiss desiccant dryers
is not recommended, as we cannot
assure the performance of those
devices.
3. Shut off the air supply to the DAD-500
and bleed air from the system.
4. Separate the air filter, coalescing filter
and nipple from the desiccant tank.
(This might be a good time to change
the desiccant beads, Part No. DAD-1).
5. Attach retro fit kit (DAD-504) to desic-
cant tank. Reattach air filter, coalesc-
ing filter and nipple to retro fit kit.
6. Position the filters in line with the des-
iccant tank, with the regulator gauge
facing straight forward.
Note
Use Teflon tape on pipe plug threads
and all threaded fittings to facilitate
removal in the future. Do
not
use
loctite or any material that may bond
and make removal difficult.
OPERATION
After the system is installed and ready
to use;
1. Attach breathable air hose to Q.D. on
flow-thru regulator.
2. Attach air hose(s) to outlet valve.
3. Open main shut-off valve upstream of
system.
1
2
5
Existing DAD-500
Existing DAD-500
4
Existing DAD-500
DAD-504
WITH RETRO FIT KIT
4. Attach breathable air hose to supplied
air respirator.
5. Adjust regulator (3) to read 60 PSIG
(flowing air to the visor). The pressure
should never be allowed to drop below
50 PSI in a flowing condition.
3
