AUXILIARY LIMIT SWITCH
Mini Switches and Wire Leads
WARNING
CARTON INVENTORY
WARNING
K90-9210M1
DESCRIPTION
QTY
Limit switch
1
Pan head screw
#4-40 x 3/4"
2
Internal tooth lockwasher
2
Limit switch backup plate
1
Limit switch nut plate
1
Limit switch mounting
bracket “H”
1
Limit switch mounting
bracket “T”
1
Pan Head screw
#8-32 x 1/4"
3
White wire used with “OPEN”
limit switch 16 Gauge, 24"
3
Blue wire used with “CLOSE”
limit switch 16 Gauge, 24"
3
CAUTION
K90-9210M2
QTY
2
4
4
2
2
To prevent possible SERIOUS INJURY or DEATH from
electrocution, disconnect electric power to operator BEFORE
installing.
ALL electrical connections MUST be made by a qualified
individual.
WARNING
FIGURE 1
NC
AUXILIARY
OPEN or CLOSE
LIMIT SWITCH
1
WH (NO)
WH
1
3
NC
FIGURE 2
3
C
WH
WH
APPLICATION
C
NO
FUNCTIONS
Each switch, or pole, provides a means to control auxiliary lights,
heaters or other equipment. The switch can be used to turn on or
off such equipment when the door is fully opened or fully closed.
FIGURE 3
BL
BL
AUXILIARY CLOSE
LIMIT SWITCH
BL
(NO)
(NC)
(C)
(NO)
(NC)
MODELS T, GT, GH
#4 Internal Tooth
Lockwasher
Pan Head
Phillips
#4-40x3/4"(2)
Backup Plate
(1 per switch)
Long Pan
Head Phillips
#8-32x1/4"(2)
(2 per bracket)
Limit Switch
Auxiliary Switch
Mounting Bracket
*Refer
to NOTE
Nut Plate
COMPONENT MOUNTING
WH
NO
3
This wiring modification is available to models T, GT, APT, J, H,
GH, SD and GSD standard door operators with 24V control
circuits (M) and logic control board (L).
NOTE: Not available with Hazardous Area or Variable Speed
Modifications.
(NC)
(C)
AUXILIARY OPEN
LIMIT SWITCH
NC
1. Locate the new auxiliary limit switch bracket assembly with the
limit switches attached.
2. Fasten the limit switch bracket down to the box using the two
#8-32 x 1/4" long self tapping screws provided (Figure 3).
3. If the bracket interferes with the screws from the open and
close limit switch, install the backup plates provided, between
the electrical box and the head of the screw (Models T, GT and
GH only).
4. Connect ends of wire leads to desired field wiring with wire
nuts to complete installation (Figures 1 and 2).
NOTE: Auxiliary limit bracket assemblies with one switch are
shipped set up for auxiliary closed. If auxiliary open is required,
remove auxiliary switch and flip over.
01-13162C
WH (C)
NO
© 2005, The Chamberlain Group, Inc.
All Rights Reserved
*NOTE: Auxiliary switch components used
with ”T” electrical boxes are the same
as “H” electrical boxes unless otherwise noted.
MODELS H AND J
Auxiliary Switch
Mounting Bracket
Pan Head Phillips
#8-32x1/4" (3)
Printed in Mexico
INSTALLATION INSTRUCTIONS
COMPONENT MOUNTING:
1. Locate the new auxiliary limit switch bracket
assembly with the limit switch attached and terminal
block (when present).
2. Fasten the limit switch bracket down to the box
using the two #8-32 x 1/2” long self tapping screws
supplied (refer to component mounting illustration).
3. When Present fasten the terminal block down to
the box using the two #8-32 x 5/8” long self tapping
screws supplied (refer component mounting
illustration).
4. If the Bracket interferes with the screws from the
open and close limit switch, install the backup plates
supplied, between the electrical box and the head of
the csrew (Model T, GT, GH only). Refer to illustration
below.
Wiring For Modification With Wire Leads:
1. Connect ends of wire leads to desired field wiring
with wire nuts to complete installation (Refer to figure
2 and 3).
Wiring For Modification With Terminal Leads:
1. Connect the wires from the auxiliary limit switch to
the new terminal block (Refer to figure 2 and 3).
FIGURE 1: Open or Closed Auxiliary Switch
TO AVOID SERIOUS PERSONAL INJURY OR DEATH
FROM ELECTROCUTION, DISCONNECT ELECTRIC
POWER TO OPERATOR BEFORE INSTALLING.
FIGURE 2: Open or Closed Auxiliary Switch
AUXILIARY
OPEN/
CLOSE
LIMIT
SWITCH
CAUTION
NC
C WH
NO
WH
WH
(C)
20
21
22
(NO)
(NC)
TERMINAL BLOCK, 6 POLE
(WHEN PRESENT)
FIGURE 3: Open and Closed Auxiliary Switch
AUXILIARY
OPEN
LIMIT
SWITCH
NC
C WH
20
(C)
21
(NO)
22
(NC)
23
(C)
24
(NO)
25
(NC)
NO
WH
WH
NOTE: Auxiliary limit bracket assemblies with one
switch are shipped set up for auxiliary closed. If
auxiliary open is required remove auxiliary switch and
flip over.
WA
WARNING
NC
AUXILIARY
CLOSE
LIMIT
SWITCH
C BL
NO
BL
BL
TERMINAL BLOCK, 6 POLE
(WHEN PRESENT)
COMPONENT MOUNTING
(2) 1/4” LONG PAN
HEAD PHILLIPS
(2 PLACES)
(2) #8-32x5/8” PAN
HEAD PHILLIPS
(2 PLACES)
(2) 1/4” LONG PAN
HEAD PHILLIPS
(3 PLACES)
AUXILIARY LIMIT SWITCH
BRACKET ASSEMBLY
10-12806
BACKUP PLATE
(2) #8-32x5/8” PAN
HEAD PHILLIPS
(2 PLACES)
#8-32 LOCK
NUT
TERMINAL BLOCK, 3 OR 6
POLE (WHEN PRESENT)
MODELS T,GT,GH
(LOW PROFILE BOX)
01-13162B
MODELS H & J
(CUBE BOX)
© 1999, The Chamberlain Group, Inc.
All Rights Reserved