62
TROUBLE SHOOTING
Problem
Possible Causes
Solutions
Latch drill feeds but will not
return
Latch drill sensor not operating
Adjust sensor and check for sen
-
sor input light on controller
Air pressure too low
Air pressure must be maintained
at 90 - 100 PSI
Slide shafts dirty
Clean slide shafts as described in
preventive maintenance
Latch drill will not bore com
-
pletely into lock bore for 5”
backset
Top return sensor on latch drill
cylinder is set too low
Adjust sensor height
Drill too short
Replace drill bit. Bits that have
been sharpened to where they
are to short for 5” backset can
still be used for shorter backsets
Slide shafts dirty
Clean slide shafts as described in
preventive maintenance
Air pressure too low
Air pressure must be maintained
at 90 - 100 PSI
Latch drill travel switch set in
“Short” position on operator
panel
Set switch to “long” position
Latch drill not centered in door
Clamp back-up block is the
wrong thickness
Use good quality 3/4” particle
board for making back-up blocks
Missing or worn drill clamp pads Replace clamp pads
Assembly has been jarred and is
no longer aligned
See section 4-11 for alignment
procedure
Lock height is no longer correct
Door is not square
Contact door manufacturer
Door stops have moved
Loosen stop assembly and read
-
just door stops
Lock motor may have moved on
its base
Realign lock drill to latch drill
Header clearance has changed
Door stops have moved
Readjust door stops as required
Jamb stops have moved
Readjust jamb stops as required