Model H1301 Recovery and Recycling System
Installation, Operation and Maintenance Manual
Revision-L September, 2019
Page 62 of 105
VII. System Maintenance Procedures
K. Complete Machine Evacuation (continued)
7. Filter Replacement
a. Place the System Power Switch to the Off position.
b. Disconnect main electrical power from the machine.
c. Open the filter maintenance access door on the top-right corner of the control panel
black hood.
d. Remove the cap from the filter maintenance access valve AV-4. Set the cap aside
for reinstallation.
e. Depress the valve core of the AV-4 access valve to release the pressure from the
filter shells this will ease the removal of the filter caps.
f. Remove the bolts from the top cover of the moisture filter and acid filter using the
½” socket wrench. Remove the top covers from the filter housings.
g. Remove the sealing gasket from each top cover. Do not scratch or mar the seal
glands of the top covers.
h. Lift the spent filter/drier cores from the housing of each filter.
i. Install two new moisture filter cores part number, A4-04-2100-00-0, into the
moisture filter housing as depicted by figure-10.
j. Install a new acid filter core part number, A4-04-2100-01-0, into the acid filter
housing as depicted by figure-10.
k. Install new sealing gaskets, supplied with the filter cores, to the glands of both top
covers.
l. Position the top covers onto the filter housings and secure into position using the
bolts previously removed. Initially tighten the bolts to 40-inch pounds. Retighten all
bolts to verify an even torque on each bolt. Retighten all the bolts in 20-inch pounds
increments to achieve an evenly distributed 100-inch pounds of torque on each
bolt.
CAUTION: Do not allow the filter/drier cores to remain exposed to the ambient air.
Install the cores immediately after opening the sealed containers. The
cores will absorb moisture from the air reducing the water removal
capacity of the filters.
m. Connect a source of clean dry nitrogen, regulated to 200 psi, to the filter
maintenance access valve AV-4 pressurizing the filter section.
n. Leak test the moisture filter and acid filter top covers using the leak detector fluid.
NOTE: Leaks in the moisture and acid filter top cover seals usually can be stopped by
tightening the retaining bolts.
o. Close and disconnect the nitrogen source from the AV-4 access valve.
p. Depress the core of the AV-4 access valve to release the nitrogen pressure from
the filter housings.
q. Connect a vacuum pump and vacuum gauge to the AV-4 access valve. Operate
the pump to evacuate the filter housings to a 1000-micron minimum vacuum level.
NOTE: The access valve end of the interconnection plumbing must contain a valve
core depressor.
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