Doyon WM35 Operators Manual

ÉQUIPEMENT DOYON INC.

1255, rue Principale

Linière, Qc, Canada G0M 1J0

Tel.: [phone]

Canada: 1 [phone]

US: 1 [phone]

FAX: [phone]

Internet: http://www.doyon.qc.ca

e-mail: [e-mail]

WM35

Product / Produit:

Serial number / Numéro de série:

WATER METER WM35

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

TABLE OF CONTENTS

DESCRIPTION PAGE
General information 1
Description drawing 2
Description 3
Technical feature 3
Installation 4
Operating instructions 5
Faulty operations and solution 6
Maintenance instructions 6
Front view Parts drawing 7
Side view parts drawing 8
Spare parts list 9
Electrical drawing 10
Warranty 13

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Créé le 14/07/09 13:15

WM35

What you see is what you got with this unit. Plus a 120VAC 15A cord and plug. The point #1
of the 8.2' hose supplied need to be fasten to the water outlet point 3.

½ NPT inlets

1

2

1

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THE MANUFACTURER DECLINES ALL RESPONSABILITY FOR ANY DAMAGE
CAUSED BY AN UNPROPER USE OF THE MACHINE AND/OR IN
ENVIRONMENTAL CONDITIONS OUT OF THE ALLOWED RANGE.

WARNING

1) BEFORE BEGINNING THE USE OF THE MACHINE READ CAREFULLY THIS
WHOLE MANUAL.

2)

3)

4)

5) IN CASE OF SUPPLY OF HOT WATER TO THE MACHINE, THE
TEMPERATURE MUST NOT BE HIGHER THAN 65°C (150°F).

6) THIS EQUIPMENT IS TO BE INSTALLED WITH ADEQUATE BACKFLOW
PROTECTION TO COMPLY WITH FEDERAL, STATE OR LOCAL CODES
HAVING JURISDICTION.

THE OPERATION LISTED BELOW CANNOT BE PERFORMED BY THE USER.
A LICENSED INSTALLER INTERVENTION IS NEEDED.

A) ELECTRICAL CONNECTIONS
B) HYDRAULIC CONNECTIONS
C) INSTALLATION
D) OPEN THE MACHINE
E) REPAIR WITH OR WITHOUT DISASSEMBLY
F) SET-UP AND ADJUSTMENT PROCEDURES

IN ALL THE CASES EVIDENCED WITH THIS SYMBOL IN THE TEXT OF THIS
MANUAL AN INTERVENTION OF A LICENSED INSTALLER IS REQUIRED

THE OPERATION EVIDENCED WITH THIS SYMBOL IS STRICTLY FORBIDEN

1.0 GENERAL INFORMATION

This machine is a Doser-Mixer for the control of quantity and temperature of the water to be
delivered into the bread kneading machines, in small and larger industry.
The quantity control is carried out with an advanced microprocessor electronics, while
temperature is regulated by means of a thermostatic mixer and controlled with the same
electronics.

It is a model suitable for the batch of large (up to 999,9 l or 999,9 lb or 99lb and 15 oz) and
small quantities (under 5 l or 10 l).

2 3

DESCRIPTION

(see figure page 2)

1. Ball-taps with OR gasket.

2. OR gasket-type unions for an easier installation.

3. Double stainless steel net filters for water impurities.

4. No-return valves.

5. Regulation knob for setting temperature, with reference scale.

6. Key STOP/C for manual stop or eventual clearing of memory.

7. Keys + and – for setting the quantity.

8. Key START for starting or restarting water delivery.

9. Supply plug, with fuse and spare, and remote pump control plug, with fuse and spare.

10. 2,5m delivery hose with stainless steel terminals.

11. Series of function control lights.

12. Digital display of electronic internal thermometer, showing °C with tenths or °F.

13. Digital display for selected, yet to be delivered (during batching), or already discharged (after
pressing STOP) litres (or pounds).

TECHNICAL FEATURES

Supply tension (see equipment label)
Frequency
Power
Environmental conditions Indoor use only

Water inlet connection
Max. warm inlet temperature
Inlet water pressures max: 70 psi

Temperature control

Dosing control Max. batch : 999,9 L (or 9999.9lb)

Water delivery At 15 psi and 68°F: 18 L/min (40 lb/min)

Supply fuse
Pump remote control fuse

110 A.C. ± 10%
50/60 Hz
25 VA

Temperature range 4 ÷ 50°C (40 ÷ 120°F)
Relative humidity range 0 ÷ 95%

1/2" NPT
65°C (150°F)

min : 15 psi
Max. pressure ratio between the 2 inlet 1 :5

Setting range 2 ÷ 60°C (35 ÷ 140F)
Measure precision : ± 0,3°C (±0,5°F)
Mixing precision : ± 1°C (±1,5°F)

Min. dosage quantity : 0,1 L (or 0,1 lb)
Precision : ± 1%

At 75 psi and 68°F: 40 L/min (90 lb/min)

5x20 mm, 630 mA Retarded (T) L 250V
5x20 mm, F 6, 3A L 250V

4

INSTALLATION

WARNING : THE INTERVENTION OF A LICENSED INSTALLER IS NEEDED

• In the case of hard water (with high limescale content = hardness in French degrees higher
than 25-30) it is necessary to employ an ion exchange water softener. This unit must be
calibrated so as to maintain a residual hardness ranging between 5 and 10 French degrees.
We advise against the use of electronic water softeners, since their efficacy has not been
proved yet.

• Fix the doser on the wall and connect the supplied power cord to electrical wall outlet.

Do not place other machines below the DOSER.

• Arrange the water inlet tubings, mounting the ball taps (1) at their ends.

• Connect the doser to the ball gates valve using connectors (2).

• Connect the delivery tube (10) to the machine.

• Provide connection to an adeguate power supply (see equipment rating plate near the plug 6),

monophase, 50 or 60Hz, using the supplied flying spcket, fitted with a three core cable with
min. section 3 x 1 mm². It is advisable to use an external switch.

• If a pump remote control is required, use the power socket provided to supply the remote
contactor of the pump(s). The employment of such pump is necessary when the inlet pressure
is less than 7 psi, for example when using unpressurized water heaters or refrigerators.

NOTICE : in the case of water chiller equipped with a surge tank with pressure switch,
this must be by-passed and the pump must be controlled directly by the Doser, through
a power relay.

The plug has the following wiring diagram :

MAX 3A resistive

5

OPERATING INSTRUCTIONS

• Switch on the doser using the external switch (or by plugging in the flying socket)

• Set desired water quantity using + and – keys. Setting appears on display (13).

Increments/decrements may be obtained in three different ways :

1. Step by step : pressing once + and = keys

2. Continuous : keeping constant pressure on + and – keys.

3. Fast : 3 seconds after keeping constant pressure on + or – keys.

• Press START key (8).

Water delivery may be stopped at any time by pressing STOP/C key (6). Quantity of water
delivered will then flash on display (12). To resume delivery of remaining water press

START key. Press STOP/C key and the original litre setting will reapears on display. Press
STOP/C key again to clear memory.

• Water temperature is selected by turning the temperature regulation knob (5) : the
temperature is shown on the electronic thermometer display (12). When regulating the water
temperature wait a few seconds between adjustments so as to allow the temperature to
stabilize.

• Quantity in memory is retained at the end of each dosing. Simply press START key if
identical successive dosing are desired.
Memory is protected against power failure; pre-set dosing can be resumed pressing START
key when power is restored.

• To ensure optimum operation the warm water temperature must be at least 10ºC higher than
the required delivery water temperature and the cold water should be at least 5ºC lower. Low
temperatures (below 10º - 15ºC) may be obtained only when using a refrigerator.

6

FAULTY OPERATIONS AND REMEDIAL ACTION

• If during water delivery the litres display flashes and the buzzer sounds intermittently and no
water flows out of the doser, press the STOP/C key and then the START key :
➩ If no water flows out of the machine and after 10-12 seconds fault indication restarts,

check the water pipes and ball valve, probably water is not reaching the doser.

➩ If the water pipes are not obstructed, the water taps are all open and water arrives

regularly to the doser, check that the filter (3) is clean and then press the START key. If
the fault persists, the solenoid valve coil is faulty.

Ask for technical assistance.

• If during dosing, water is at first delivered regularly, but the litres display does not decrement
accordingly or decrements very slowly and/or irregularly, and after a while water delivery
stops, the buzzer sounds and display flashes :
Press the STOP/C key and then the START key :

➩ If after 10-12 seconds the anomaly reoccurs probably the internal litre counter is faulty.

Request technical assistance.

• All displays and led indicators remain off :
Check the fuse located next to the power supply plug, the housing can be opened with a
screwdriver.
If necessary, replace the fuse using the spare, located in the same housing.
If, after replacing the fuse, the fault persists, request technical assistances.

• The device discharges water regularly but the temperature display flashes : the internal
temperartureis faulty.
Request technical assistance.

MAINTENANCE INSTRUCTIONS

• To guarantee a long working life for the internal components, clean the filter (3) regularly,
particularly if the water supply has a high limescale content. Clean also filters upstream of the
machine regularly (if mounted).

• To clean the external surfaces of the doser-mixer, use a soft sponge and water or possibly a
neutral detergent; for more resistant grime, use turpentine.