43191680-105
Auxiliary Switch
INSTALLATION INSTRUCTIONS
APPLICATION
INSTALLATION
The 43191680-105 Dual Auxiliary Switch provides two
independent, spdt switching functions. Switching points
are adjustable over the full length of the actuator stroke; for
example, the switch can be used to switch pumps at any
point or to provide remote indication of any specific stroke
position. These switches are used with valve actuators as
shown in Table 1. The switches are furnished factory wired
to the terminal block. Fig. 1 illustrates the parts furnished
with this switch and the wiring connections.
When Installing this Product...
ᕡ Read these instructions carefully. Failure to follow
them could result in the equipment not operating
properly.
ᕢ Check the part numbers in the preceding section to
be sure that the product is suitable for your applica-
tion.
ᕣ The installer must be a trained, experienced service
technician.
ᕤ After completing installation, use these instructions
to check product operation.
IMPORTANT
These switches are rated at 24 Vac maximum.
Table 1. Applicable Actuators for
43191680-105 Dual Auxiliary Switches.
CAUTION
Disconnect the power supply to the auxiliary
potentiometer and actuator before beginning
installation to prevent electrical shock or equip-
ment damage.
Spring Action on
Actuator
ML6425A
Power Failure
Extends stem
Retracts stem
Extends stem
Retracts stem
ML6425B
ML7425A
ML7425B
Mounting, Connecting, and Adjusting
ᕡ Remove actuator cover.
ᕢ Mount the auxiliary switch assembly and terminal
label on the actuator base. Make sure the two tabs
on the bottom of the switch assembly slip snugly into
the slots provided. See Fig. 2.
S1
SI
S2
S2
3
1
2
3
1
2
S1
S2
6
4
5
9
7
8
6
4
5
9
7
8
1
2
3
4
5
6
C8394
C8393
Fig. 1. Auxiliary switch parts and wiring.
Fig. 2. Installing auxiliary switch assembly.
ᕣ Secure auxiliary switch assembly by pressing top
back until assembly snaps into place. See Fig. 3.
Copyright © 1997 Honeywell Inc. • All Rights Reserved
63-2524
43191680-105 AUXILIARY SWITCH
Wiring
Route field wiring in through the conduit opening in the
bottom of the actuator, connect to the switch assembly
terminal block according to the job drawings, and replace
the actuator cover. See Fig. 1 for terminal identification.
S1
S2
1 X MAX.
CAUTION
Disconnect the power supply to the auxiliary
switches and actuator before wiring to prevent
electrical shock or equipment damage.
All wiring must comply with local codes, regulations, and
ordinances.
100
0
i
CHECKOUT
i
Drive actuator shaft fully up and fully down and check the
function of the auxiliary switches in the control system.
C8397
Fig. 6. Adjusting switching points.
3
63-2524
Home and Building Control
Honeywell Inc.
Honeywell Plaza
Helping You Control Your World®
Home and Building Control
Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
P.O. Box 524
Minneapolis, MN 55408-0524
M2H 2C9
63-2524 G.C. 1-97 Printed in U.S.A
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