Honeywell 43191105, 43191680 User Manual

43191680-1

05

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APPLICA TION

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.

IMPORTANT

These switches are rated at 24 Vac maximum.

Table 1. Applicable Actuators for

43191680-105 Dual Auxiliary Switches.

Actuator

ML6425A Extends stem
ML6425B Retracts stem
ML7425A Extends stem
ML7425B Retracts stem

Spring Action on

Power Failure

Auxiliary Swi

INSTALLATION INSTRUCTIONS

INSTALLA TION

When Installing this Product...

1 Read these instructions carefully. Failure to follow

them could result in the equipment not operating
properly.

2 Check the part numbers in the preceding section to

be sure that the product is suitable for your applica­tion.

3 The installer must be a trained, experienced service

technician.

4 After completing installation, use these instructions

to check product operation.

CA UTION

Disconnect the power supply to the auxiliary
potentiometer and actuator before beginning
installation to prevent electrical shock or equip­ment damage.

Mounting, Connecting, and Adjusting

1 Remove actuator cover.
2 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.

SI

S1

S2

6 4 5 9 7 8

Fig. 1. Auxiliary switch parts and wiring.

Copyright © 1997 Honeywell Inc. • All Rights Reserved

331122

1 2 3 4 5 6

C8394

S2

S1

S2

6 4 5 9 7 8

Fig. 2. Installing auxiliary switch assembly.

3 Secure auxiliary switch assembly by pressing top

back until assembly snaps into place. See Fig. 3.

X-XX UL

63-2524

C8393

43191680-105 AUXILIARY SWITCH

S1

S2

C8395

Fig. 3. Securing auxiliary switch assembly.

4 Secure terminal block and terminal label with Phillips

head screws. See Fig. 4 .

4 MM

S1

S2

3 MM

C8396

Fig. 4. Securing terminal block and label.

CA UTION

The manual spring handle is under tension and
could turn quickly when lifted resulting in injury to
fingers pinched between the handle and plastic
casing. Maintain handle orientation while lifting and
remove fingers quickly when releasing.

M6629

Fig. 5. Removing spring retaining clip

and releasing manual spring handle.

6 Adjust switching point for each switch. See Fig. 6.

a. Using manual spring handle on the actuator,

adjust the actuator shaft to the required
switching point for Switch S1.

NOTE: Turning the spring handle clockwise

extends the actuator shaft. When the
shaft gets to the required position,
press the handle down to hold the
shaft in position. Turning the spring
handle requires two hands, one to
turn the handle and the other to hold
it in place on each consecutive turn.
Observe the preceding caution and
release the handle only as noted in
the preceding Step 5.

b. Loosen the Phillips head set screw on the

cam for Switch S1, set the cam to the required
position, and tighten the set screw.

c. Repeat the preceding Steps 6a and 6b for

Switch S2.

5 Remove manual spring handle retaining clip, if

necessary, and lift and release the handle. See
Fig. 5. The easiest way to perform this operation
safely is to:

a. Remove the retaining clip (shipping stop) and

discard.

b. Wedge a small, flat-bladed screwdriver under

the manual spring handle at the point marked
in Fig. 5 and pry up the handle.

63-2524 2

1 X MAX.

43191680-105 AUXILIARY SWITCH

Wiring

Route field wiring in through the conduit opening in the
bottom of the actuator, connect to the switch assembly

S1

S2

terminal block according to the job drawings, and replace
the actuator cover. See Fig. 1 for terminal identification.

CA UTION

Disconnect the power supply to the auxiliary
switches and actuator before wiring to prevent
electrical shock or equipment damage.

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Fig. 6. Adjusting switching points.

100

All wiring must comply with local codes, regulations, and
ordinances.

0

CHECKOUT

Drive actuator shaft fully up and fully down and check the

C8397

function of the auxiliary switches in the control system.

3

63-2524

43191680-105 AUXILIARY SWITCH

Home and Building Control

Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis, MN 55408-0524

63-2524 4

63-2524 G.C. 1-97 Printed in U.S.A

Home and Building Control

Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 2C9

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