MANN+HUMMEL TRIDIM Tri-Lock GS Manual

Tri-Lock™ GS & FS
Operation &
Maintenance
Manual

2TRI-DIM TRI-LOCK OPERATION AND MAINTENANCE
Tri-Lock
Operation & Maintenance
CONTENTS
Introduction 3
Application 3
Performance 4
Handling and Storage of Filter Elements 6
Installation of New Housings 6
Start-Up Procedures 7
Appendix A 8
Appendix B 8

TRI-LOCK OPERATION AND MAINTENANCE TRI-DIM 3
Tri-Lock
Introduction
INTRODUCTION
The Tri-Lock FS/GS HEPA side-access air filter
unit is a permanent housing designed to hold
either gasket or fluid seal filters. It is an
intermittently welded and caulked product—with
a seal-welded construction optional—designed
for critical clean air applications.
The factory-assembled unit is of one-piece
construction with a broken channel and no
extrusion. Hat sections are located on the top,
bottom and back of the unit for structural support.
Each housing is custom manufactured to meet
specific end-user requirements.
The unit is constructed of either galvanized steel
or optional stainless steel, and is welded together
with no bolt connections. An optional prefilter
section is available to accommodate 2” or 4”
filters.
APPLICATION
Tri-Dim®’s Tri-Lock FS/GS HEPA Side Access air
filter housing is designed for a range of
applications, including:
HVAC systems
Air handlers
Industrial plants
Food industry
Pharmaceutical
Microelectronics
Hospital
Bio medical

4TRI-DIM TRI-LOCK OPERATION AND MAINTENANCE
INSTALLABLE FILTERS
Tri-Lock FS and GS accommodate dierent Tri-Pure™ HEPA and
Tri-Dim ASHRAE filters. Standard versions of the housings
accommodate 24” x 24” x 11½”-deep HEPA filters with DOP
eciencies of 95%, 99.97% or 99.99% @ 0.3 μm.
See filter manufacturer’s individual filter eciency requirements.
FLUID SEAL DESIGN CONCEPT
The filter-to-housing fluid seal is eected by means of a continuous
perimeter knife-edge on the interior of the housing, which mates
into the gel-filled perimeter channel on the face of the filter. The
hand-operated locking mechanism guides and secures the filter
into the knife-edge—penetrating the gel and forming a positive seal
on the filter face.
DESCRIPTION OF FLUID-SEAL FILTER LOCKING
SYSTEM
The fluid-seal Tri-Lock FS housing has a filter-locking arm in each
tier to operate the replaceable filter-locking mechanism. By
operating the internal filter-locking arm, the filter is engaged or
disengaged from the housing knife-edge (internal-sealing frame).
The filter-locking arm and access door operate in such a manner
that minimizes the possibility of the door being closed until the
filters are correctly sealed in the housing and sealed to the mounting
frame.
Gel Track
HEPA Filter
Housing
Knife Edge
Tri-Lock FS
Housing
Housing Locking MechanismExtractor Clip
Housing Locking Arm
Tri-Lock
Performance – Fluid Seal

TRI-LOCK OPERATION AND MAINTENANCE TRI-DIM 5
GASKET SEAL DESIGN CONCEPT
The filter-to-housing gasket seal is eected by means of a
continuous flat mounting surface on the interior of the housing,
which mates to a perimeter gasket on the filter. To aect 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
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
removed when servicing filters. When the housing is fully loaded
and the door sealed properly, the housing eciency is equal to that
of the filter rating.
Tri-Lock GS
Housing
Gasket
Locking
Tray
Mechanism
Locking
Tray
HEPA Filter
Tri-Lock
Performance – Gasket Seal

6TRI-DIM TRI-LOCK OPERATION AND MAINTENANCE
Handling, Storage
And Installation
HANDLING AND STORAGE OF FILTER
ELEMENTS
Particulate filters include a wide range of filter
types, sizes and performance capabilities. These
filters are designed to remove airborne
particulates from an air stream. Filters can range
from 30%-ecient (MERV 7) prefilters up to
99.97% @ 0.3μm-ecient HEPA (high eciency
particulate air) filters. In general, all particulate air
filters are fragile and should be handled with care.
The following precautions should be observed
upon storing filters:
Keep in a clean, low humidity, air-controlled
environment.
Filter should remain in its original shipping
container with the correct orientation until it is
installed.
The temperature in the storage area should not
be lower than 0° F or higher than 100° F.
Stacking of filters is not recommended.
Movement of filters should be restricted to
reduce the chance of damage to the media.
Any additional filter manufacturer’s instructions
and warnings should also be followed.
INSTALLATION OF NEW HOUSINGS
1. Position the housing adjacent to the ductwork.
Housing should be welded, bolted or gasketed
permanently to the ductwork.
2. Housing should be securely mounted to either
a base or other permanent edifice.
3. Unit should be orientated so the access door(s)
can be easily removed and replaced.
4. Following installation, ductwork and housing
should be cleaned to eliminate any and all
contaminants, as well as any other items
that may have been stored in the unit during
shipping.
5. Install filter(s) and tighten the mechanism
(gasket seal) or engage the arm (gel seal).
6. Perform designated leak test/DOP test
(designated by either the chief safety ocer
or engineer) to ensure that the unit is working
properly and not leaking.

TRI-LOCK OPERATION AND MAINTENANCE TRI-DIM 7
Start-Up Procedures
Getting Started
BEFORE YOU START
The system must be shutdown prior to any filter installation or
removal. Air flow should be stopped or a bypass of the air system
must be made.
Consult with the safety ocer and perform a job safety
analysis prior to installing or removing any filter(s). Make sure
all personnel are wearing the required personal protective
equipment (PPE).
START-UP PROCEDURE
1. Clean outside the door, work area and all metal surfaces.
2. Provide filter: Provide a new HEPA filter(s) and or prefilter for
each tier.
3. Remove door: Loosen all doorknobs on the section where the
filter(s) are to be removed. Lift the door o the door studs and
swing open on the hinge.
*Option - lift the door o the hinge and place in a safe location.
4. Unseal the filter: Pull the arm all the way outward to the open
position. The mechanism will pull the filters from the gel track
via extractor clips on the filters. This allows the filter to release
from the knife-edge.
For a gasket seal housing, unlock the filter by turning both bolt-
locking mechanisms counterclockwise with a ratchet. This will
release the filter from the flat edge.
*If there are multiple filters per tier, steps 2-4 should be repeated
until all filters are removed.
5. Remove the dirty filter(s) and dispose in accordance with all
applicable state and federal laws.
6. Slide the new filter(s) into the housing and engage the locking
mechanism to seal o the filter(s) on the knife edge(s).
7. Close the swing bar and latch for a gel-seal filter, or screw down
the drive bolts clockwise on a gasket-seal filter.
8. Replace the door and tighten all the door latches.

Appendices
One last thing...
APPENDIX A
It is recommended that the buyer supply complete information
about the operating conditions of the ventilation system prior to
installation of any HEPA side-access filter housing.
Location-specific conditions may prevent the system from
operating satisfactorily in certain applications.
Any non-factory alterations to the product may result in a
compromised installation.
Please contact the manufacturer for any questions not addressed
in this manual.
APPENDIX B – LOCKING TRAY CHANGE OUT
It is advised that any locking-tray mechanism replacement or
change out be done in a decontaminated environment. One of the
advantages of the Tri-Lock FS/GS housings is the ability to change
out locking trays in the field.
Change out is a simple task. The same concept that applies to
filters applies to locking mechanisms—refer back to the Start-Up
Procedures.
First, remove all filters from the contamination unit following the
aforementioned Start-Up Procedures.
Fluid Seal Method
1. Using the ratchet with a ½” socket, remove the two hex nuts and
washers for both the top and bottom locking trays.
2. Then switch to a ⅜” socket, and remove the hex nut and washers
from the linkage to the door swing arm.
3. Remove both the top and bottom parts to each pair of locking
trays.
4. Treat the locking mechanism as a dirty filter and continue the
appropriate steps.
Gasket Seal Method
1. Using a ratchet with a ½” socket, remove the two hex nuts and
washers for both the top and bottom locking trays.
2. Lift the top half of each locking tray o the studs and into the bag.
3. Remove the pipe bearings from the locking mechanism and
back o the drive bolts to release the bottom locking trays.
4. Remove the bottom-locking tray.
5. Treat the locking mechanism as a dirty filter and continue the
appropriate steps.
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LOCAL REPRESENTATIVE
Tri-Dim Filter Corporation is committed to continual product
development – all descriptions, specifications and performance
data are subject to change without notice. Tri-Dim products are
manufactured to exacting criteria – there can be a ±5% variance
in filter performance.