Doyon WM35 User manual

WATER METER WM35
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
TABLE OF CONTENTS
DESCRIPTION PAGE
Figure 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Figure 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Figure 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
General informations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Technical feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Faulty operations and remedial action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

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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)
A) ELECTRICAL CONNECTIONS
B) HYDRAULIC CONNECTIONS
C) INSTALLATION
D) OPEN THE MACHINE
E) REPAIR WITH OR WITHOUT DISASSEMBLY
F) SET-UP AND ADJUSTMENT PROCEDURES
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.
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).
THE OPERATION LISTED BELOW CANNOT BE PERFORMED BY THE USER.
A LICENSED INSTALLER INTERVENTION IS NEEDED.
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

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DESCRIPTION
(see figure 1)
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)110 A.C. ±10%
Frequency 50/60 Hz
Power 25 VA
Installation category II
Environmental conditions Indoor use only
Temperature range 4 ÷50°C (40 ÷120°F)
Relative humidity range 0 ÷95%
Hydraulic connections 1/2'’
Max. warm inlet temperature 65°C (150°F)
Inlet water pressures max: 75 psi
min : 15 psi
Max. pressure ratio between the inlet : 1 :5
Temperature control Setting range 2 ÷65°C (35 ÷140F)
Measure precision : ±0,25°C (±0,5°F)
Mixing precision : ±1°C (±1,5°F)
Dosing control Max. batch : 999,9 l (or 999,9 lb)
Min. dosage quantity : 0,1 l (or 0,1 lb)
Precision : ±1%
Water delivery At 15 psi : min 18 l/l’(40 lb/l’)
At 75 psi : min 40 l/l’ (90 lb/l’)
Supply fuse
Pump remote control fuse
5x20 mm, 630 mA Retarded (T) L 250V
5x20 mm, F 6, 3A L 250V

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INSTALLATION
•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 at a height from the floor of 1350 ÷1550mm using the two wall
plugs supplied. The 90°wall plug hook is supplied to provide support for the water delivery
outlet elbow.
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 :
WARNING : THE INTERVENTION OF A LICENSED INSTALLER IS NEEDED
MAX 3A resistive

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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.
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 DOX, 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 :

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!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.

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SPARE PARTS
Figure-3 shows the machine section indicating the different components of the device and the
following Table lists their description with relevant spare parts code numbers.
WM35 SPARE PARTS
POS DESCRIPTION CODE
230V 50Hz 110V 60Hz
1 Hot water ball gate valve (red,left) 3801229 /
2 Cold water ball gate valve (black, right) 3801228 /
3 Filter – no return valve assembly 3801230 /
4 2 wires liter counter 3801007 /
5 Actuators electronic board / plugs 3811547 3811548
6 Internal probe 3812522 /
7 Electrovalve internal kit 4400451 /
8 Electrovalve group with coil 3801136 3801138
9Ø16mm delivery hose 3801209 /
10 Electrovalve coil 4400405 4400406
11 Mixing unit without knob 3801309 /
12 Thermostatic sensor 4400351 /
13 Regulating knob 3801208 /
14 Cover with electronics 3811044 /
!IT IS STRICTLY FORBIDEN TO USE NOT ORIGINAL SPARE PARTS !

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LIMITED WARRANTY
(Continental United States Of America And Canada Only)
Doyon Equipment Inc. guarantees to the original purchaser only that its product are free of
defects in material and workmanship, under normal use.
This warranty does not cover any light bulbs, thermostat calibration or defects due to or
resulting from handling, abuse, misuse, nor shall it extend to any unit from which the serial
number has been removed or altered, or modifications made by unauthorized service
personnel or damage by flood, fire or other acts of God. Nor will this warranty apply as
regards to the immersion element damaged by hard water.
The extent of the manufacturer’s obligation under this warranty shall be limited to the
replacement or repair of defective parts within the warranty period. The decision of the
acceptance of the warranty will be made by Doyon Equipment service department, which
decision will be final.
The purchaser is responsible for having the equipment properly installed, operated under
normal conditions with proper supervision and to perform periodic preventive maintenance.
If any parts are proven defective during the period of one year from date of purchase, Doyon
Equipment Inc. hereby guarantees to replace, without charge, F.O.B. Linière, Quebec,
Canada, such part or parts.
Doyon Equipment Inc will pay the reasonable labor charges in connection with the
replacement parts occurring within one year from purchase date. Travel over 50 miles,
holiday or overtime charges are not covered. After one year from purchase date, all labor
and transportation charges in connection with replacement parts will be the purchaser’s
responsibility.
Doyon Equipment Inc. does hereby exclude and shall not be liable to purchaser for any
consequential or incidental damages including, but not limited to, damages to property,.
damages for loss of use, loss of time, loss of profits or income, resulting from any breach
or warranty.
In no case, shall this warranty apply outside Canada and continental United States unless
the purchaser has a written agreement from Doyon Equipment Inc