TRI-LOCK OPERATION AND MAINTENANCE
TRI-DIM
15
Appendix B
Locking Tray
LOCKING TRAY CHANGE OUT
It is advised that any locking tray mechanism replacement or
change out be done in a decontaminated environment. Due to
sharp edges, placing a metal locking tray in a PVC bag is not
recommended. However, one of the advantages of the Tri-Lock
BG/BF bag-in/bag-out contamination housing is the ability to
change out locking trays in the field.
Change out is a simple task. The same concept applies to locking
mechanisms as that to filters (refer back to start up procedures).
First, remove all filters from the contamination unit following the
Start Up Procedures aforementioned. Insert a new bag with a
standard ratchet with a ½” socket in the bag. For Gel seal units a
3/8” socket will be needed as well. Position the new PVC bag’s
shock cord the same way you would for a PVC bag with a new filter
in it. Remove the old bag stub in the new bag.
FLUID SEAL METHOD
1.
Using the ratchet with the ½” socket remove the two hex nuts
and washers for both the top and bottom locking trays.
2.
Then switch to the 3/8” 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 and pull into the PVC bag.
4.
Treat the locking mechanism as a dirty filter and continue the
appropriate steps.
Warning!
Ratchet and socket must remain in the bag.
Do not remove.
GASKET SEAL METHOD
1.
Using the ratchet with the ½” socket remove the two hex nuts
and washers for both the top and bottom locking trays.
Fig. 21:
Downstream view of locking tray mechanism
2.
Lift the top half of each locking tray off of the studs and into
the bag.
3.
Remove the pipe bearings from the locking mechanism and
back off the drive bolts to release the bottom locking trays.
4.
Remove the bottom-locking tray and pull into the PVC bag.
5.
Treat the locking mechanism as a dirty filter and continue the
appropriate steps.
Warning!
Ratchet and socket must remain in the bag.
Do not remove.