American Dryer AD-840 User Manual

AD-840

Installation/Operator's Manual

052798OC/cj

For replacement parts, contact the distributor from which the dryer

was purchased or

American Dispensing Corporation

88 Currant Road

Fall River MA 02720-4781

T elephone: [phone] / Fax: [phone]

E-mail: techsupport@amdry .com

ADC Part No. 182730

Retain This Manual In A Safe Place For Future Reference

American Dispensing Company products embody advanced concepts in engineering, design, and safety.

If this product is properly maintained, it will provide many years of safe, efficient, and trouble-free operation.

ONLY properly licensed technicians should service this equipment.

OBSERVE ALL SAFETY PRECAUTIONS displayed on the equipment or specified in the installation/operator's
manual included with the water vending machine.

WARNING:

We have tried to make this manual as complete as possible and hope you will find it useful. ADC reserves the
right to make changes from time to time, without notice or obligation, in prices, specifications, colors and material,
and to change or discontinue models.

UNDER NO CIRCUMSTANCES should the door switch or the heat circuit devices
ever be disabled.

Important

For your convenience, log the following information:

DATE OF PURCHAS E MODEL NO.

DIS TRI BUT ORS N AME

Serial Number(s)

AD-840

Replacement parts can be obtained from your distributor or the ADC factory . When ordering replacement parts
from the factory, you can FAX your order to ADC at [phone] or telephone your orders directly to the

ADC Parts Department at [phone]. Please specify the water vending machine model number and
serial number in addition to the description and part number, so that your order is processed accurately and

promptly.

IMPORTANT

YOU MUST DISCONNECT and LOCKOUT THE ELECTRIC
SUPPLY BEFORE ANY COVERS or GUARDS ARE REMOVED FROM
THE MACHINE TO ALLOW ACCESS FOR CLEANING, ADJUSTING, IN­STALLATION, or TESTING OF ANY EQUIPMENT per OSHA (Occupational
Safety and Health Administration) STANDARDS.

CAUTION

LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING

AD-840. WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS
OPERATION.

FOR YOUR SAFETY

THE SYSTEM IS SHIPPED WITH A PRESERVATIVE SOLUTION MADE
OF SODIUM BISULFITE (IN THE WINTER MONTHS) GLYCERINE. MAKE
SURE THE SYSTEM IS THROUGHLY PURGED BEFORE LETTING ANYONE
DRINK THE DISPENSED WATER.

REFER TO THE INSTALLATION SECTION ON PURGING PROCEDURE.

CAUTION

Never look directly into the unprotected parts of the U.V. chamber when there is
power to the sterilizer . Serious burns to the eyes and skin may result. Always unplug
power to the sterilizer before working on it.

IMPORTANT

Please observe all safety precuations displayed on the equipment and specified in

the installation and operator’s manual included with the AD-840.

IMPORTANT

The wiring diagram for the water vending machine is located on the inside right

wall of the machine.

W ater vending machines must not be installed or stored in an area where it will be

exposed to water or weather.

Table of Contents

I. IMPORTANT INFORMATION ..........................................................................3

A. Receiving and Handling ............................................................................................................... 3

B. Safety Precautions

II. SPECIFICATIONS AND COMPONENT IDENTIFICATION .................... 5

A. Specifications.............................................................................................................................. 5

III. INSTALLATION PROCEDURES ................................................................... 9

A. Location Requirements................................................................................................................ 9

B. System Description ..................................................................................................................... 9

C. W ater Supply............................................................................................................................ 10

D. Feed W ater and Drain Plumbing ................................................................................................ 11

E. Electrical Information ................................................................................................................. 11

F. Set up ....................................................................................................................................... 12

IV. SERVICE AND PARTS INFORMATION ..................................................... 1 5

A. Resetting the Microprocessor .................................................................................................... 15

B. Service ..................................................................................................................................... 15

C. Parts......................................................................................................................................... 15

V. WARRANTY INFORMATION......................................................................... 1 6

A. Returning W arranty Cards......................................................................................................... 16

B. Parts ......................................................................................................................................... 16

C. Returning W arranty Parts .......................................................................................................... 16

VI. MAINTENANCE SCHEDULE .......................................................................1 8

VII. FILTER MAINTENANCE .............................................................................2 2

A. W ater Filter and Strainer Replacement....................................................................................... 22

B. Air Filter Inspection and Replacement........................................................................................ 23

VIII. REVERSE OSMOSIS MEMBRANE ......................................................... 24

A. Product W ater Flow Rate Measurement.................................................................................... 24

B. Membrane Cleaning .................................................................................................................. 27

C. Storage and Shipping of Membrane........................................................................................... 30

IX. U.V. STERILIZER ............................................................................................3 2

A. U.V . Light and Quartz Sleeve Replacement and Cleaning Instructions......................................... 33

B. U.V. Sensor Probe Cleaning Instructions .................................................................................... 35

C. Sensor Probe replacement Instructions ...................................................................................... 36

X. MISCELLANEOUS MAINTENANCE TECHNIQUES ............................... 3 8

A. Drain Bay Cleaning ................................................................................................................... 38

B. V ending Nozzle Adjustment ....................................................................................................... 39

C. Tubing and Fitting Replacement Technique................................................................................. 39

X. MISCELLANEOUS MAINTENANCE TECHNIQUES ............................... 3 8

XI. TROUBLESHOOTING ................................................................................... 4 1

3

Telephone: [phone]

Fax: [phone]

SECTION I

IMPORTANT INFORMATION

A. RECEIVING and HANDLING

The water vending machine is shipped in a protective stretch wrap cover with protective cardboard corners
and top cover (or optional box) as a means of preventing damage in transit. Upon delivery, the water vending
machine, packaging material and wooden skid should be visually inspected for shipping damage. If any
damage is noticed, inspect further before delivering carrier leaves.

Water vending machines damaged in shipment.

1. ALL water machines should be inspected upon receipt and before they are signed for.

2. If there is suspected damage or actual damage, the trucker’s receipt should be so noted.

3. If the water vending machine is damaged beyond repair, it should be refused. Those water vending
machines which were not damaged in a shipment should be accepted, but the number received and the
number refused must be noted on the receipt.

4. If you determine that the water vending machine was damaged after the trucker has left your location, you
should call the delivering carrier’s freight terminal immediately and file a claim. The freight company
considers this concealed damage. This type of freight claim is very difficult to get paid and becomes
extremely difficult when more than a day or two passes after the freight was delivered. It is your responsibility
to file freight claims. Water vending machines and parts damaged in transit cannot be claimed under
warranty.

5. Freight claims are the responsibility of the consignee, and claims must be filed at the receiving end. ADC
assumes no responsibility for freight claims or damages.

6. If you need assistance in handling the situation, please contact the ADC Traffic Manager at [phone].

IMPORTANT: The water vending machine must be transported and handled in an upright position

at all times.

B. SAFETY PRECAUTIONS

IMPORTANT: Refer to this manual before making any repairs or adjustments, or doing any maintenance

on this machine.

IMPORTANT: For owners who do not personally maintain the machine, it is their responsibility that the

IMPORTANT: Follow maintenance schedule rigorously. Careless maintenance may lead to component

operator has been properly instructed and is fully aware of the manual contents. This is
important in the safe handling and efficient operation of the machine.

failure and increase operating costs significantly.

American Dispensing Company

88 Currant Road / Fall River, MA 02720-4781

4

CAUTION: DO NOT make any alteration or modification in the wiring or plumbing of this machine. Such

alterations may result in injury, illness, or death to maintenance personnel, operators or users of
this machine.

WARNING: DO NOT allow machine to freeze. Freezing will irreparably damage components in

the machine.

NOTE: NEVER LOOK DIRECTLY INTO THE UNPROTECTED PARTS OF THE U.V. CHAMBER

WHEN THERE IS POWER TO THE STERILIZER. SERIOUS BURNS TO THE EYES AND
SKIN MAY RESULT. ALWAYS UNPLUG POWER TO THE STERILIZER BEFORE
WORKING ON IT.

NOTE: THE SYSTEM IS SHIPPED WITH A PRESERVATIVE SOLUTION MADE OF SODIUM

BISULFITE AND (IN THE WINTER MONTHS) GLYCERINE. MAKE SURE THE
SYSTEM IS THOROUGHLY PURGED BEFORE LETTING ANYONE DRINK THE
DISPENSED WATER. SEE SECTION ON INSTALLATION PROCEDURES.

DISCLAIMER

The information contained in this document is subject to change without notice.

American Dispensing Company shall not be liable for technical or editorial omissions made herein; nor inci­dental or consequential damages resulting from the furnishing, performance or use of this material.

Telephone: [phone]

Fax: [phone]

SECTION II

SPECIFICATIONS/COMPONENT IDENTIFICATION

A. SPECIFICATIONS

Reverse Osmosis (R.O.) Membrane Capacity 1,200 gallons* 4.542.2 liters*
R.O. Pump 3/4 HP .55 kw
Dispensing Pump 3 gal/min 11.36 liters/min
Drain Pump 3 gal/min 11.36 liters/min
Voltage Available 120-240 v / 1Ø / 50 / 60 Hz
Water Inlet Size 1/2 N.P.T.
Drain Outlet Size 1/2 N.P.T.
Storage Tank Size 25 gallons 94.6 liters

5

* These specifications are calculated at 2,000 ppm, total sodium chloride solution at 77º F/25º C feed

water temperature and 160 psi/11.24 kg/cm2 R.O. Pump pressure.

** MUST BE CONNECTED TO A MINIMUM 3/4” N.P.T. INLET WATER SUPPLY

MINIMUM PRESSURE/INLET FLOW RATE

Four gallons a minute at 35 psi back pressure or the equivalent of nine gallons per minute at a free
flowing 1/2” N.P.T. outlet at the intended location of the machine. This test should be conducted
with all other equipment connected to the same water line running to reflect true flow.

MAXIMUM WATER PRESSURE

Eighty psi. Install a pressure regulator if incoming water pressure exceeds this level. High inlet
pressure will irreparably damage filter housings and cause leaks in the system.

American Dispensing Company

88 Currant Road / Fall River, MA 02720-4781

6

7

Telephone: [phone]

Fax: [phone]

American Dispensing Company

88 Currant Road / Fall River, MA 02720-4781

8

9

Telephone: [phone]

Fax: [phone]

SECTION III

INSTALLATION PROCEDURES

Installation should be performed by competent technicians in accordance with local and state codes. In the
absence of these codes, the installation must conform to applicable American National Standards; National
Electric Code ANSI/NFPA NO. 70 - LATEST EDITION.

A. LOCATION REQUIREMENTS

WARNING: Feed water must come from inspected, approved water system only. Source must

microbiologically safe drinking water.

1. The water vending machine must be installed on a sound level floor capable of supporting its weight. It
is recommended that carpeting be removed from the floor that the water vending machine is to rest on.

2. The water vending machine must not be installed or stored in an area where it will be exposed to water
and weather.

3. Provisions for adequate water supply must be provided as noted in this manual (see Water Supply in
Section III C.)

4. Plumbing should be performed in accordance to local, state and federal codes. (see Section III D.
Feed Water and Drainage Plumbing).

5. Provisions must be made for adequate clearances for servicing and for operation as noted in this
manual (see Enclosure Requirements in Section II A).

B. SYSTEM DESCRIPTION

Thank you for purchasing the model AD-840 water vending machine. It is made by American Dispensing Company
and is one of the most advanced water vending machines on the market today. It is microprocessor-based and
programmable. It interacts with the customer and owner through two LED displays and a membrane keypad. The
AD-840 purifies water through a five-step process:

Incoming water first passes through a 10 micron absolute SEDIMENT FILTER. This means that suspended solids
larger than .01 mm (or about forty-thousands of one inch) such as slit and fine sand are removed.

Water then passes through a CARBON FILTER. This removes chlorine, odor and a variety of organic
contaminants, such as chloroform and pesticide residue. The AD-840 uses a carbon filter with an extruded
carbon core and an inner filtration wrap. This combination ensures that, unlike a conventional granular activated
carbon (g.a.c.) filter, there is no channeling or bypassing, and no release of fine carbon particles.

Water is then pumped through a thin film composite reverse osmosis (R.O.) membrane at about 160 psi.
The R.O. membrane removes over 90 % of a variety of salts and inorganic materials found in water, such as
dissolved salts of sodium, lead, nitrate; it removes typically over 99% of radioactivity, like radon. Actual
rejection rate will depend on feed water chemistry, temperature and its total dissolved solid content.

American Dispensing Company

88 Currant Road / Fall River, MA 02720-4781

10

Water is then stored in an atmospheric water tank, sealed except for an air vent which is protected from dust
and airborne bacteria by a submicron air filter.

When your customer selects a vend, water will be pumped through a combination sediment/carbon POLISH­ING FILTER which removes any remaining taste and sediment, and an ULTRAVIOLET (U.V.) STERIL­IZER which sterilizes the water.

To keep the stored water fresh and sterilized, the water in the storage tank is recirculated through the polishing
filter and the U.V. sterilizer periodically.

Safety is our prime concern and it is designed into the machine. At the inlet and outlet of the R.O. membrane,
a comparator reads the total dissolved solid rejection rate, an indicator of the performance of the membrane.
If the rejection rate falls below a certain level, the microprocessor will shut the machine down. The same logic
applies to the U.V. sterilizer, where a true U.V. sensor continually monitors the disinfecting power of the light
and shuts down the machine when the U.V. level is not high enough.

There is also overflow and leakage protection. The sensors are located on the base of the machine, in the
drain tank of the dispensing bay and in the water storage tank. These sensor detect overflow or leakage and
will shut off whatever components are necessary.

C. WATER SUPPLY

The following conditions are required for optimum performance:

WARNING: FEED WATER MUST COME FROM INSPECTED, APPROVED WATER

SYSTEMS ONLY. SOURCE MUST BE MICROBIOLOGICALLY SAFE
DRINKING WATER.

1. MINIMUM PRESSURE/INLET FLOW RATE

Four gallons a minute at 35 psi back pressure or the equivalent of nine gallons per minute at a free
flowing 1/2” N.P.T. outlet at the intended location of the machine. This test should be conducted
with all other equipment connected to the same water line running to reflect true flow.

2. MAXIMUM WATER PRESSURE

The maximum water pressure is 80 psi. Install a pressure regulator if incoming water pressure may
exceed this level. High inlet pressure will irreparably damage filter housing and cause leaks in the
system.

3. TEMPERATURE

This machine should be kept in an environment between 40 and 108º F. Exposing the machine to
freezing temperatures will irreparably damage the components.

4. MINERAL CONTENT

Pretreatment of incoming water is recommended if hardness exceeds 150 ppm or 9 grains per gallon,
or if iron levels exceed .05 ppm. Membrane will still function with high mineral content water, but yield
will drop substantially, membrane cleaning is required more frequently, and membrane life will be
shortened significantly, increasing overall operating costs.

Telephone: [phone]

Fax: [phone]

D. FEED WATER AND DRAIN PLUMBING

1. Inlet and outlet of the machine is 1/2” N.P.T., female threads. Use for connection only sanitary plumb­ing materials appropriate for drinking water.

NOTE: Minimum 3/4” N.P.T. inlet water supply.

2. Drain outlet should have a minimum of a two-inch air gap at the point of discharge. Follow ALL
applicable plumbing codes when making connections.

E. ELECTRICAL INFORMATION

1. ELECTRICAL REQUIREMENTS
It is your responsibility to have all electrical connections made by a properly licensed and competent
electrician to assure that the electrical installation is adequate and conforms with local and state regula­tions or codes. In absence of such codes, ALL electrical connections, material and workmanship must
conform to the applicable requirements of the National Electrical Code ANSI/NFPA NO. 70-LAT­EST EDITION.

IMPORTANT: Failure to comply with these codes or ordinances and requirements stipulated in

this manual can result in personal injury or component failure.

11

NOTE: Component failure due to improper installation will VOID THE WARRANTY.

Each water vending machine should be connected to an independently protected branch circuit. The
water vending machine must be connected with copper wire only. Do not use aluminum wire which
could cause a fire hazard. The copper conductor wire or cable must be of proper ampacity and insulation in
accordance with electric codes for making all service connections.

NOTE: The use of aluminum wire will VOID THE WARRANTY.

2. ELECTRICAL SPECIFICATIONS

AD-840

Electrical Service Specifications (Per Water Vending Machine)

IMPORTANT: 208 VAC and 230 VAC ARE NOT THE SAME. When ordering, specify exact voltage.

NOTE: A. Fuse ratings are dual-element time-delay current limiting, class RK1 or RK5 ONLY.
B. Circuit breakers are thermal magnetic (industrial) type only. For others, calculate/verify correct

breaker size according to appliance amp draw rating and type of breaker used.
C. Circuit breakers for 3ø dryers must be 3-pole type.

SERVICE

VOLTAGE

PHASE

WIRE

SERVICE

APPROX.

AMP

DRAW

50 Hz 60 Hz

MINIMUM

WIRE

SIZE*

FUSING

Dual Element

Time Delay

CIRCUIT

BREAKER

* AWG Stranded Type Wire for individual lengths less than 100 feet.

120 1ø 2 15 14 12 25 30
208 1ø 2 8 7 14 12 15

230/240 1ø 2 8 7 14 12 15

American Dispensing Company

88 Currant Road / Fall River, MA 02720-4781

12

IMPORTANT: The water vending machine must be connected to the electric supply shown on the

data label that is affixed to the back of the water vending machine, at the upper right
hand corner. In the case of 208 VAC or 230/240 VAC, the supply voltage must
match the electric service specifications of the data label exactly.

WARNING: 208 VAC and 230/240 VAC ARE NOT THE SAME. Any damage done to water

vending machine components due to improper voltage connections will automatically
VOID THE WARRANTY.

NOTE: ADC reserves the right to make changes in specifications at any time, without notice or

obligation.

F. UNPACKING/SETTING UP

ATTENTION: CHECK STATE AND LOCAL LAWS REGARDING THE OPERATION

OF WATER VENDING MACHINES BEFORE INSTALLATION. SOME
STATES REQUIRE VENDORS TO NOTIFY THE DEPARTMENT OF
PUBLIC HEALTH OR WEIGHTS AND MEASURES CONCERNING THE
INSTALLATION OF THE MACHINE. FOLLOW ALL APPLICABLE
FEDERAL, STATE AND LOCAL STANDARDS FOR DRINKING WATER
INSTALLATIONS.

ATTENTION: BE SURE THE INSTALLATION OF THIS MACHINE COMPLIES WITH

ALL LOCAL PLUMBING AND ELECTRICAL CODES.

WARNING: DO NOT CONNECT ELECTRICAL POWER TO MACHINE UNTIL

REQUESTED.

1. Remove the wrappings of the vending machine and check for transit damage. Notify carrier if there
is damage.

2. Skid can be removed by unscrewing four 5/16” skid bolts at the legs of the machine.

3. Place machine at the intended location and, if required, adjust the 3/4” bolts at the legs until the machine
is level and stable.

4. Connect plumbing inlet and outlet lines. Refer to guidelines in the section “SITE REQUIREMENTS.”

5. Reconnect R.O. membrane (see next page).