26
79/RT/E7900/770/E-760/660 Series
PK3678_T 04-18
How to change lock cylinders (continued)
30. Re-insert the cylinder plug (K) (Fig. 19)
Fig. 19
(H)
(K)
31. While holding the cylinder (J) and plug (K) in place, insert
the key (M)
32. Turn the key (M) approximately 100º clockwise
33. Repeat the steps 1 to 9 to attach the lever handle (H) to
the lock housing. (see Fig. 20)
Fig. 20
Right-handed
lock
Left-handed
lock
(H)
(M)
Resetting the E7900 locks with MKO - Refer to command
card kit or appropriate software user guide (Aurora/
Enterprise).
Two additional adapters are provided for use with other key
in lever style cylinders.
CAUTION
WARNING
IMPORTANT
The Key Override itself does not retract the latch or
deadbolt. Do not use too much force when turning the key
as this may damage the unit. To retract the latch, turn the
key clockwise until it stops, release the key and turn the lever
handle (H). See page 21
Note: The lever handle must stay in the horizontal position
when turning the key (do not try to turn the key while turning
the handle) or the override mechanism will not work.
CAUTION
WARNING
IMPORTANT
Always keep the door open while installing and verifying the
functionality of the lock with the keycard or key override.
Do not close the door until you are certain that you have
installed the unit correctly.
Preparing the lever handle for Best Removable Core
F-5
Insert 6-pin Best adapter (thicker) into 6-pin
interchangeable core or insert 7-pin Best
adapter (thinner) into 7-pin interchangeable
core. Insert the adapter until it makes contact
with the removable core.
F-6
Using the control key, assemble the removable
core with its adapter into the lever. Remove
control key.
F-7
Insert the change key into the removable core.
Follow the rest of instructions from step 3 to 5 of page
20
7 Pins
Thinner
Adapter
6 Pins
Thicker
Adapter
9 Installation of Mechanical Override Models