PROMIX SM101, Operating Manual, Page: 10 / 12

Promix-SM101
10
8. TROUBLE-SHOOTING
Troubles and problems Remedies
NC lock does not open when supply voltage
is applied.
Using a tester, check integrity of the lock power
circuit.
Press the door against the door frame and pull the
emergency exit rod, or apply an elevated voltage
of 20-30V to the lock for a short time. After
opening the lock, increase the latch bar length. To
do this, fix the knurled nut with one hand, and
screw the latch bar out of the nut to the required
length with the other hand (or with flat-nose
pliers).
Increased free play of the latch (more than
3 mm) while the lock is in the closed state.
Decrease the latch bar length. To do this, fix the
knurled nut with one hand, and screw the latch bar
into the nut to the required length with the other
hand (or with flat-nose pliers).
A large clearance between the door and the
door frame as the door is closed (the latch
stops against the inside of the lock).
The lock does not fix the latch (the door is
not closed).
Transfer the lock to the “closed” state (apply or
remove supply voltage, depending on the lock
version). Check polarity and conformity of the lock
supply voltage to the required one.
Fix the knurled nut with one hand, and screw the
latch bar out of the nut to the required length with
the other hand (or with flat-nose pliers).
The door is not opened when transferred to
the “open” state. To open the door, one has
to press it more snugly to the door frame.
Remove the causes of the non-tight door bearing
against the door frame.
Use a door closer.
Increase the latch length.
The door has sunk during use (automatic
latch alignment is insufficient), therefore,
the latch does not enter the lock aperture or
hits the lock as enters.
Restore the door position If this is impossible,
remove the latch fixture from the door. Drill the
hole in the door to increase its diameter. Fasten
the latch to the door ensuring alignment with the
lock aperture.
In a NO lock, the latch is not inserted
completely into the lock (“balls are seized”).
De-energize the lock. Insert a steel rod 3-5 mm in
diameter (screw-driver, drill, etc.) into the lock
aperture to a positive stop and pull it out.