Bobrick B-2974 / B-29744 / B-3974 / B-39747 / B-3979 / B-72974 / B-824 / B-828 Instructions

INSTRUCTIONS FOR CONVERTING

SureFlo® AUTOMATIC COUNTER-MOUNTED SOAP DISPENSERS

B-824 LIQUID AND B-828 FOAM FROM BATTERIES TO AC POWER

WITH 3974-57, AC ADAPTER KIT (DOES NOT INCLUDE INTERCHANGEABLE PLUGS FOR U.K., EUROPE, AND AUSTRALIA.

IF NEEDED, ORDER ASSORTMENT PLUG KIT, PART. NO. 3974-58 TO FIT CORRESPONDING PLUG)

Fig. A

Bobrick Part Number 3974-57, AC Adapter Kit includes:

• 3974-18 AC to DC Switching Power Supply

• 3974-19 Expandable 1" Grommet

• 3974-20 U.S. AC Adapter Plug

This kit is supplied with a cULus, CE, GS listed, double insulated
AC to DC switching power supply. The power supply is equipped
with a 117" (2971.8 mm) low voltage outlet cord terminated with a
barrel connector for attachment with a mating jack located in the
dispenser. The power supply is equipped with an interchangeable
standard 2 pole NEMA plug intended for direct mounting into a
standard 120V NEMA duplex outlet. For warranty purposes, it is
required that the power converter must plug into an AC outlet that
is not accessible to the dispenser user. If not available, consult
a licensed electrical contractor. The power supply output is to
be routed through the mounting wall as a low voltage, energy
limited circuit, similar to a thermostat wire, with no requirement
for electrical box or attachment strain relief. Use only the power
supply supplied with this unit. Any substitution could damage the
unit and will void any warranty.

(not needed for soap dispenser)

Fig. B

Activation

Light Pipe

Area

Powe r
Cord
Jack

1. Locate or provide an AC outlet that is not accessible to
the dispenser user.

2. See a quali ed, licensed electrician for the proper
installation of a standard 120V NEMA duplex outlet, if
one is required, and for the proper routing of the
3974-18 AC to DC Switching Power Supply. The
installation must comply with local building code.

3. Plug the barel plug end of the AC to DC switch power
supply into the AC to DC power jack in the B-824/B-828
Automatic Soap Dispenser (see Fig. A). Extra cord should
be stored in a location inaccessible to the dispenser user.

4. Plug power supply into an outlet, and allow unit to cycle
through. (LED lights will  ash through the Light Pipe (see

Fig. B) of the unit as it cycles through and primes the

dispenser).

5. If not fully primed, prime dispenser by placing hand
under spout repeatedly until fully primed. Hand must be
removed from activation area to reset each time.

NOTE: If solid green LED does not light when activated,
loosen Fiber Optic Nut (see Fig. C) and push in Fiber
Optic Cables (see Fig. D) until fully seated into PC Board
(not shown) behind the Rubber Fiber Optic Connector
and retighten Fiber Optic Nut. Ensure Fiber Optic Cable
color coded with red band is installed in the bottom hole
with the wide key portion of the Rubber Fiber Optic

Connector on top.

For Trouble shooting dispenser refer to installation instruction
sheet Form No. 824-81.

Fig. C

Fig. D

Fiber
Optic
Cables

Wide Key on Top
Rubber
Fiber Optic
Connector

Red
Band

Fiber
Optic
Nut

INSTRUCTIONS FOR CONVERTING

B-3974, B-39747, B-3979, B-2974, B-29744 AND B-72974 FROM BATTERIES TO AC POWER

WITH 3974-57, AC ADAPTER KIT (DOES NOT INCLUDE INTERCHANGEABLE PLUGS FOR U.K., EUROPE, AND AUSTRALIA.

IF NEEDED, ORDER ASSORTMENT PLUG KIT, PART. NO. 3974-58 TO FIT CORRESPONDING PLUG)

Bobrick Part Number 3974-57, AC Adapter Kit includes:

• 3974-18 AC to DC Switching Power Supply

• 3974-19 Expandable 1" Grommet

• 3974-20 U.S. AC Adapter Plu

(Note: Other materials may be required for proper installations
such as rubber hole grommets, cable ties, conduit, etc.)

This kit is supplied with a cULus, CE, GS listed, double insulated
AC to DC switching power supply. The power supply is equipped
with a 117" (2971.8 mm) low voltage outlet cord terminated with a
barrel connector for attachment with a mating jack located in the
dispenser. The power supply is equipped with an interchangeable
standard 2 pole NEMA plug intended for direct mounting into a
standard 120V NEMA duplex outlet. For warranty purposes, it is
required that the power converter must plug into an AC outlet that
is not accessible to the dispenser user. If not available, consult
a licensed electrical contractor. The power supply output is to
be routed through the mounting wall as a low voltage, energy
limited circuit, similar to a thermostat wire, with no requirement
for electrical box or attachment strain relief. Use only the power
supply supplied with this unit. Any substitution could damage the
unit and will void any warranty.

1. Unlock and open the door of the Dispenser Cabinet
Assembly. Remove any batteries that are in the unit.

2. Locate the 1" access hole in the back of the cabinet
behind the AC to DC power jack and install the 3974-19
Expandable 1" Grommet.

3. Locate or provide an AC outlet that is not accessible to
the dispenser user.

4. See a qualied, licensed electrician for the proper
installation of a standard 120V NEMA duplex outlet, if
one is required, and for the proper routing of the
3974-18 AC to DC Switching Power Supply. The
installation must comply with local building code.

DO NOT BRING HIGH VOLTAGE POWER INTO THE

CABINET FOR ANY REASON.

5. Route the power converter cord through the hole in the
3974-19 Expandable 1" Grommet and plug the barrel
plug end of the 3974-18 AC to DC Switching Power
Supply into the AC to DC power jack in the 3974-56 Roll
Towel Module. If necessary, the cord can be brought into
the Dispenser Cabinet from the top or the side of the
cabinet by drilling a 1/2" to 1" hole.

6. Take care to protect the cord from any edges of the
stainless steel cabinet.

7. No extra cord length should be accessible inside the
cabinet. Extra cord should be stored in a location
inaccessible to the dispenser user.

8. Mount or remount the unit onto or into the wall making
sure the cord is not pinched or damaged.

9. Plug 3974-18 AC to DC Switching Power Supply into an
outlet and allow 30 seconds for the unit to calibrate. The
indicator light will ash to show that the unit is receiving
the power.

g

B-3974
Automatic
Roll Towel Dispenser

(Other Models Not Shown)

3974-18
AC to DC
Switching
Power Supply

3974-19
Expandable 1" Grommet

3974-56
Roll Towel
Module

AC to DC
Power Jack

Dispenser Cabinet
(3974-50, B-2974)

© 2011 by Bobrick Washroom Equipment, Inc.

Form No. 3974-68 Rev. 12/16/11 Printed in U.S.A.

In the U.S.A.: BOBRICK WASHROOM EQUIPMENT, INC.

200 Commerce Drive, Clifton Park, New York 12065-1350 • Tel: [phone] • FAX: [phone]
11611 Hart Street, North Hollywood, California 91605-5882 • Tel: [phone] • FAX: [phone]

In Canada: BOBRICK WASHROOM EQUIPMENT COMPANY

45 Rolark Drive, Scarborough, Ontario M1R 3B1 • Ontario East: Tel: [phone] • FAX: [phone]

• Manitoba West: Tel: [phone] • FAX: [phone]