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Tri-Lock
Performance – Gasket Seal
GASKET SEAL DESIGN CONCEPT
The filter-to-housing gasket seal is effected by means of a
continuous flat mounting surface on the interior of the housing,
which mates to a perimeter gasket on the filter. To affect the seal,
the bolt-activated, top and bottom hand-operated, crank-locking
mechanisms secure the filter(s) against the housing's perimeter
mounting surface, compressing the gasket.
OPENING AND CLOSING GASKET-SEAL LOCKING
MECHANISM
Gasket
HEPA Filter
Tri-Lock GS
Housing
By turning a drive bolt located at the front interior of the housing-
clockwise, independent pressure bars with preloaded springs
(located in the filter locking mechanism) force the filter against the
interior-mounting frame (there are two drive bolts per filter).
Preloaded springs on each pressure bar, for each filter element,
apply consistent pressure to maintain the filter seal.
The applied force has a minimum-clamping load of 1,400 pounds
per perimeter of the filter. The gasket on the filter is compressed to
1/8" against the mounting frame. This force is applied as an even,
uniform load along the top and bottom of each filter frame. The
standard locking mechanism hardware is 18-8 stainless steel with a
360-brass nut.
Caution: Do not compress the filter beyond 1/8". Excessive
compression can cause filter leakage.
DOOR DESIGN
Hand-torqued door latches provide a positive pressure door-to-
housing seal, as well as ease filter servicing. A unique door hinge
allows the door to remain either on its hinges or be completely
Locking
removed when servicing filters. When the housing is fully loaded
Tray
and the door sealed properly, the housing efficiency is equal to that
Locking
of the filter rating.
Tray
Mechanism
TRI-LOCK OPERATION AND
MAINTENANCE TRI-DIM
5
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