Switch #2: Timer To Close - Chamberlain LiftMaster Professional SW420 Installation And Maintenance Instructions Manual

20
Programming
POLE POLE
#1
ON
OFF
ON OFF
OFF OFF
ON
OFF
ON OFF
OFF OFF
ON
OFF
ON OFF
OFF OFF
ON
OFF
ON OFF
OFF OFF

Switch #2: Timer to Close

Timer to close is locked out at the factory. To activate the timer to close, follow steps below:
1 Move safety jumper from bottom two pins to top two pins. Then set time per the chart above
(Table 5).
2 During normal operation, if the operator stops on a limit, or mid travel, the operator will time
out per the chart below and automatically close.
3 To lock the timer to close program and disable, simply return the jumper to the bottom two
pins, or turn on all pins of SW#2.
IMPORTANT NOTE: When using master/slave, only set the time for the master operator.
The slave operator must be set to disabled position (all poles on).
Doc 01-G0610
Rev A
POLE POLE
#2 #3 #4
ON ON ON
ON ON ON
ON ON
ON ON
ON OFF ON
ON OFF ON
OFF ON
OFF ON
ON ON OFF
ON ON OFF
ON OFF
ON OFF
ON OFF OFF
ON OFF OFF
OFF OFF
OFF OFF
TOTAL TIME WARNING
DEVICE DISABLED
DISABLED
1 SEC.
13 SEC.
26 SEC.
40 SEC.
52 SEC.
65 SEC.
78 SEC.
104 SEC.
117 SEC.
129 SEC.
141 SEC.
155 SEC.
167 SEC.
180 SEC.
194 SEC.
Table 5
Figure 15
TOTAL TIME WARNING
DEVICE ENABLED
DISABLED
4 SEC.
16 SEC.
2 SEC.
43 SEC.
55 SEC.
68 SEC.
81 SEC.
107 SEC.
120 SEC.
132 SEC.
144 SEC.
158 SEC.
170 SEC.
183 SEC.
197 SEC.
01-G0610F14