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Maintenance and Repair 4 - 7
4.6 Moisture Indicator
Recharging Procedure
Note: Dryer shutdown is not necessary to perform the fol-
lowing procedure and can be accomplished without remov-
ing the entire assembly.
1. Close the Moisture Indicator Supply Valve, and en-
sure that the Moisture Indicator has fully depressur-
ized through bleed valve [5] before proceeding to step
#2 for disassembly. (See following WARNING.)
WARNING!
Ensure that Moisture Indicator is fully depressur-
ized before attempting disassembly. Failure to
do so may result in serious personal injury and/
or equipment damage.
2. Remove sight dome assembly (items [2], [4], [6], [7],
and [9]) from body [8] by turning screw [6] counter-
clockwise.
3. Remove screw [6] from sight dome [2] by exerting
pressure on screw’s threaded end. Drain granular
indicator.
4. Remove porous disc [4] and clean sight dome. (see
following CAUTION.)
CAUTION: Sight Dome [2] is an acrylic plastic. Do
Not clean with any type of solvent.
5. Replace O-ring [9], and re-install screw [6] in sight
dome [2].
6. Carefully pour new granular indicator into sight dome
[2]. Slide porous disc [4] into place.
7. Replace O-ring [7] and re-install sight dome assembly
(items [2], [4], [6], [7], and [9]) in body [8].
8. Fully open the moisture indicator’s gas supply valve
(not shown).
9. Adjust bleed valve [5] until only a very slight constant
gas bleed valve is felt exhausting from valve’s bleed
port. Ensure that granular indicator remains motion-
less after final adjustment.
Figure 4.2
MOISTURE INDICATOR
5
1
8
4
7
3
9
6
2