LiftMaster SW420 SW420 GL BOARD Manual - Page 13
Mechanical Disconnect, closed normally. - installation manual
 |
View all LiftMaster SW420 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 13 highlights
INSTALLATION MECHANICAL DISCONNECT The operator can be disconnected from the gate, so the gate can be manually opened or closed. Disconnect the control arm from the drive hub by removing the hairpin cotter and then the clevis pin and allowing the manual release pin to drop down through the hub. The arm should now be free and the gate can be opened and closed normally. NOTE: If desired, a padlock can be used in place of the clevis pin to hold the manual release pin in place. Figure 1 Clevis Pin Hairpin Cotter Control Arm Drive Hub Release Pin 13
-
1 -
2
-
3
-
4
-
5
-
6
-
7
-
8 -
9 -
10 -
11 -
12 -
13 -
14 -
15 -
16 -
17 -
18 -
19
-
20
-
21
-
22
-
23
-
24
-
25
-
26
-
27
-
28
-
29
-
30
-
31
-
32
-
33
-
34
-
35
-
36
 |
 |
13
MECHANICAL DISCONNECT
The operator can be disconnected from the gate, so the gate can
be manually opened or closed. Disconnect the control arm from
the drive hub by removing the hairpin cotter and then the clevis
pin and allowing the manual release pin to drop down through the
hub. The arm should now be free and the gate can be opened and
closed normally.
NOTE:
If desired, a padlock can be used in place of the clevis pin
to hold the manual release pin in place.
Figure 1
INSTALLATION
Drive Hub
Control Arm
Clevis Pin
Hairpin Cotter
Release Pin