Open Mid Stop; Timer-To-Close - Chamberlain GH Installation Manual

OPEN MID STOP

Feature: The Mid Stop feature is to open the door to a preset
point prior to the fully open position.
Benefit: The door opens to a midpoint between open and close
reducing heating and cooling costs. The door will not cycle fully,
providing longer door and operator life.
To Program:
1. Close the door.
2. Turn selector dial to PROGRAM.
3. Press and release the MID button on logic board.
4. Press the OPEN button, wait until the door reaches the desired
mid stop height, then press and release the STOP button.
5. Press and release the MID button to complete programming.
6. Turn selector dial back to desired wiring type.
NOTE: A momentary open command will open the door fully from
the Mid Stop position. Once at the Mid Stop, photoelectric sensors
and other safety devices will not open the door beyond the mid
stop position, except in E2 mode. The Timer-To-Close will work
from the Mid Stop.
To clear the Mid Stop set the selector dial to PROG and press and
hold the MID button for 5 seconds. The MID LED will flash rapidly
and turn off once the Mid Stop has been cleared. Turn selector
dial back to desired wiring type.
To prevent possible SEVERE INJURY or DEATH:
• Install a LiftMaster Monitored Entrapment Protection (LMEP)
device.
• NEVER permit children to operate or play with door control
push buttons or remote controls.

TIMER-TO-CLOSE

Feature: Timer automatically closes door after preset time. All
safety devices must be unobstructed.
Benefit: The door will automatically close after preset amount of
time. Great for apartment buildings, fire stations and other
applications where the end user wants the door to close
automatically after a specified amount of time.
Requirements: Must have at least one LiftMaster Monitored
Entrapment Protection (LMEP) device installed (refer to page 20).
Wiring type must be set to TS, T or FSTS.
TO PROGRAM MANUALLY (METHOD 1):
1. Close the door.
2. Turn the selector dial to PROGRAM.
3. Press and release the TIMER button on the logic board.
4. Press and release the STOP button to clear the timer.
5. Press and release the OPEN button for every second the
operator should wait before attempting to close the door. Press
and release the CLOSE button for every 15 seconds the
operator should wait before closing the door.
Programming - Open mid stop/Timer-To-Close
WARNING WARNING
• Activate door ONLY when it can be seen clearly, is properly
CAUTION
adjusted and there are no obstructions to door travel.
• ALWAYS keep door in sight until completely closed. NEVER
permit anyone to cross path of closing door.
6. Press and release the TIMER button to complete programming.
The OPEN/CLOSE button LEDs will flash to confirm the timer
setting. The OPEN LED will flash once for every second
programmed and the CLOSE LED will flash once for every 15
seconds programmed.
7. Turn the selector dial to desired timer wiring type
(TS ,T or FSTS).
AVERTISSEMENT
Example: To close the door after 70 seconds. Turn selector dial to
PROGRAM, press and release the TIMER button, press and
release the STOP button to clear the timer, press and release the
CLOSE button four times for 60 seconds and press and release
ATTENTION
the OPEN button 10 times for 10 seconds. Press the TIMER
button to finish programming the timer. Turn selector dial to
desired timer wiring type. (TS, T, FSTS).
SELECTOR DIAL
T
E2
D1
C2
B2
33
SELECTOR DIAL
T
TS
E2
D1
C2
B2
Operation will vary
depending on wiring T
E2
type
D1
C2
B2
TS Operation will
vary depending
FSTS
on wiring type
D1
DIAG
C2
OPTN
B2
PROG
FSTS
DIAG
OPTN
PROG
TS
FSTS
DIAG
OPTN
PROG
WA
AVERT
AVER
T
TS
E2
FSTS
DIAG
OPTN
PROG
W