79/RT/E7900/770/E-760/660 Series
PK3678_T 04-18 25
Test the Mechanical Override Function (continued)
CAUTION
WARNING
IMPORTANT
Verify the functionality of the override after the lock is in-
stalled on the door: (Door must be opened)
18. With the door open, insert key (N) in cylinder (J) and turn
it clockwise until it stops.
19. Let go of the key (N) and turn the lever handle (H) (clock-
wise for right-handed and counter-clockwise for left-
handed locks). The latch must retract.
20. Extend deadbolt and repeat the above operation (turn
key (N) clockwise until it stops), latch and deadbolt must
retract completely.
9. cover the keyhole & cylinder with the cap
21. The cap (I) has a small groove on one edge (to allow ease
of removal) this should be facing down. Insert bottom
snap of cap (I), (see page 18) in handle hole below the
cylinder (J). With a small screwdriver, push top snap of
cap down while pushing the cap (I) into place to cover the
keyhole (Fig. 15)
Fig. 15
(I)
Hole below
cylinder
Bottom snap
(First)
Top snap (Second)
Push (Third)
(H)
22. To remove the cap (I), insert a small flat screwdriver into
the groove and gently pry the cap off, being careful not
to damage it. (You may want to cover the bottom of the
lever to protect the finish from being scratched through
the process of removing the cap). (Fig.16)
Fig. 16
(H)
(I)
(T)
10. How to change lock cylinders
22a. Loosen the set screw (01) to free the lever using Allen
Key (P1) (Approx. 1/4 turn).
Fig. 16A
23. Remove the cap (I) from the lever handle (H) (see step
23, Fig. 16).
24. Insert key (N).
25. Turn the key (N) clockwise until it stops.
26. Release key (N).
27. Use a small flat screwdriver to push in the lever catch (F)
through the small hole underneath the lever handle (H)
(Fig. 17).
Fig. 17
(H)
(T)
Small screwdriver
or equivalent tool
(M)
28. Pull the lever handle (H) off of the lock housing (be care-
ful not to lose the cylinder plug (K) see page 18).
29. Replace the old cylinder with the new one in the lever
handle (H). Only same kind of cylinder with 2 grooves in
cross, in the end of the cylinder plug could be used on the
locks. (Fig. 18)
Fig. 18
2 Grooves in cross
(H)
(J)
9 Installation of Mechanical Override Models