18
TG-Filter_EN_01—2016
Retighten the earthing lugs on ATEX-compliant filters
The earthing lugs on ATEX-compliant filters can loosen over the time. The
conductivity may then be impaired.
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Tighten the earthing lugs every 6 months.
Replacing filter element and housing O-ring
Replace the filter element every year, but at the latest with a differential pressure
of 0.35 bar (0.6–0.8 bar for a high pressure filter). Also replace the housing O-
ring.
Beware of damage due to inexpert handling!
Never use unsuitable tools to open and close the filter housings. Never
apply the tool to the thread area. The exerted force could crush the
thread; it would then be impossible to open the filter again.
Use a suitable open-ended spanner to open and close the filter if possible.
Apply the open-ended spanner to the square at the housing bottom. Use a
similarly suitable tool, e.g. a strap wrench if an open-ended spanner
cannot be used. Apply the tool clearly below the thread.
TGA and TGH filters
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Make the same preparations as described in section “Preparations” on
page 17.
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Unscrew the lower housing and remove it.
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Unscrew the filter element with the O-ring and discard it.
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Discard the housing O-ring.
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Insert a new filter element with O-ring and hand-
tighten the filter element.
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Insert a new housing O-ring.
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Apply a thin coat of grease on the housing threads
before assembly if necessary. Use only TG 1 thread
grease unless any other grease has been agreed
upon in the order!
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Make sure during assembly that
—
the O-rings are properly seated
—
the grease does not come into contact with O-
rings and sealing surfaces.
Both housing parts have marking arrows.
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Connect both housing parts again and hand-tighten them until the marking
arrows match.
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Close the manual drain valve again.
