Doyon WM45 User manual

WATER METER WM45
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
TABLE OF CONTENT
DESCRIPTION PAGE
General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Technical features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Manual operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Operation with 80 programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Use of external probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Special functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Error messages and corrective actions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8
Operation interruption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Maintenance instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

1
STATEMENT
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.
a) ELECTRICAL CONNECTIONS
b) HYDRAULIC CONNECTIONS
c) INSTALLATION
d) OPEN THE MACHINE
e) REPAIR WITH OR WITHOUT DISASSEMBLY
f) SET-UP AND ADJUSTEMENT PROCEDURES
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 BEN INSTALLED WITH ADEQUATE BACKGLOW
PROTECTION TO COMPLY WITH FEDERAL, STATE OR LOCAL CODES HAVING
JURISDICTION.
1.0GENERAL 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 99 Lb and 15 oz) and small
quantities (under 5L or 10Lb).
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
FORBIDDEN.

2
1. DESCRIPTION
(see figure no. 6 page 3)
1. Ball gate valves
2. ‘O’ ring gasket type unions to facilitate installation
3. Stainless steel double mesh filters for water impurities
4. Non return valves
5. Temperature regulation knob
6. External probe
7. Supply plug with fuse and spare and plug for the pump control, with fuse and spare
8. Display for the internal electronic thermometer and the set temperature
9. Display for the external electronic thermometer and the programs
10. key to move from temperature to quantity and vice versa
11. STOP/C and START keys
12. Delivery hose
13. By-pass connection
14. Series of function control lights
15. Membrane keyboard for the data entry
16. Display showing litres selected, litres still to be delivered (during the dosing), or already delivered
(after pressing STOP).
1.1 TECHNICAL FEATURES
Features
Supply tension
(see equipment rating plate)
230 Volt A.C. or 110Volt A.C. ± 10%
Frequency 50/60Hz
Power 25VA
Hydraulic connections ½’’
By-pass water outlet 16mm
Max. inlet water temperature 65°C
Inlet water pressures Max.: 75 PSI
Min.: 15 PSI
Max. pressure ratio between the 2 inlets: 1:5
Temperature control Setting range 2 - 60°C
Measure precision: ±0.3°C
Mixing precision: ± 1°C
Dosing control Max. dosage quantity: 999.9L
Min. dosage quantity: 100g
Precision: ± 1% (over 5L)
Water delivery At 15 PSI and 20°C: 18litres/min
At 75 PSI and 20°C: 40litres/min
Supply fuse
Pump remote control fuse
250V – 630mA delayed
250V 6.3A delayed

3
2. INSTALLATION
•In case of hard water (with high lime scale content = hardness in French degrees higher than 25 – 30,
or 250 – 300ppm) it is necessary to employ an ion exchange water softener. This unit must be
calibrated so as to maintain a residual hardness ranging between 50 – 100ppm. The use of electronic
water softeners is not advised, since their efficacy has not been proved yet.
•Fix the doser-mixer on the wall at a height from the floor of 1350 – 1550mm, using the four 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-MIXER.
•Arrange the water inlet tubing as shown in the lay-out diagrams, figures 2-3-4-5, mounting the ball
gate valves (1) at the end of the pipes (black lever = cold on the right and red lever = warn on the left).
•With reference to the figure 4, it is advisable to use the pre-assembled group: Three way connection
kit, code 3801205.
•Connect ball gate valves to the doser-mixer by means of the "O" ring gasket type unions (2).
•Insert the delivery hose (12) into the housing.
•Connect the by-pass (13) to a drain by means of a copper pipe with 16mm external diameter.
•Connect the proper power supply (see equipment rating plate near the plug 7), monophase 50 or 60Hz,
using the supplied flying socket, fitted with a three core cable min. section 3x1mm². An external
switch is helpful.
•For the eventual pump remote control, use the supplied flying socket to connect the remote control
switch if the pump(s). The use of such a pump is necessary when one of the two inlet pressures in less
than 15 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 on the device has the following wiring diagram (clean control):
WARNING: THE INTERVENTION OF A LICENSED INSTALLER IS NEEDED

4
3. OPERATING INSTRUCTIONS
Switch on the doser-mixer using the external switch (or by plugging in the flying socket).
The first displays appearing at the switching on refer to the self-test. The displays show the numbers form
0 to 9, the microprocessor software version, then the data regarding the last discharge.
3.1MANUAL OPERATION
•Press P00 on the keyboard (the yellow Manual led lights up and the decimal point of the litres
flashes), then select the required water quantity. If only the quantity has to be stored, press START. If
the operator needs to store also the temperature, press the key : the flashing moves to the decimal
point of the temperature, which can be set. In case of error, in the litres or in the temperature, press
STOP/C key and reselect.
•Press the START key: the display 8 shows the actual discharge temperature and the display (16)
indicates the decreasing litres.
•To manually stop delivery at any time press the STOP/C key. In the display (16) the quantity if
delivered water flashes; to resume the dosage, press again the START key; otherwise pressing again
the STOP/C key the memory is cancelled and a different quantity can be set.
•Adjust the water temperature using the knob (5), checking it on the electronic thermometer (8). In case
of correction, wait a few seconds before intervening, so as to allow the temperature to stabilize.
•To obtain the same water dosage in successive operations, simply press the START key, as the doser-
mixer is provided with a memory. In the case of power failure during dosing the data are not lost;
when power is restored simply repress the START key to complete the dosing operation (see page 20
par.3.5.3).
•To modify quantity and/or temperature in memory, press directly the key and proceed as for the
first data entry.
•To ensure optimum operation the warm water temperature must be at least 10°C higher than the
required delivery water temperature and the cold water should be at least 3°C lower. Low
temperatures (under 10° - 15°C) may be obtained only using a refrigerator.
•The doser-mixer is equipped with a valve for manual delivery of pre-mixed water (by-pass). This
valve can be used both for discharging possible backwater in the pipes, when the doser is switched on
for the first time every day, and for water delivery during power failure or in the event of dosing
solenoid valve failure.
NOTES: 1) The by-pass function light never switches on in this machine version, and the RUN
function light is on during the whole discharge.
2) The stored temperature appears only when a recipe is recalled, or when the key for the
quick modification is pressed, and remains for 6”; then the display shows the
actual internal probe temperature.

5
3.2 OPERATION WITH 80 PROGRAMS
3.2.1 Initial recipes setting
Set the program number (ex.: P01, P02 etc.) appearing on the lower display (9) (PROGR. lights up) and
then the desired water quantity, appearing on the upper display (16). To store also the temperature, press
key and proceed as for manual operation. It is possible to exit from a recipe setting dosing the recipe
itself (press START), setting a new recipe (press P…). or automatically after 10 seconds: in all these
cases the recipe is stored.
Warning: recipe numbers from 1 to 9 must always be set using the format: 01, 02, etc…
3.2.2 With recipes already programmed:
To recall a recipe, enter the desired number (for example P28), which is shown for 3 seconds on the lower
display (9), while the upper displays show the relevant quantity and temperature.
Press START to carry out the dosing.
If modifications are required, set the new quantity and/or temperature as explained above.
To stop water delivery manually at any time press the STOP/C key. After that on the display (16) the
delivered water quantity flashes; to resume dosing press again the START key, otherwise, pressing the
STOP/C key, the quantity is cleared and it is possible to set a new quantity.
3.3 USE OF EXTERNAL PROBE
The equipment is fitted with an auxiliary precision electronic thermometer with a mobile probe (6), usable
at distances up to 5 metres.
Temperature readout on the display is continuous (9), except when the program number appears.
3.4 SPECIAL FUNCTIONS
•With the double pressure of the Pkey, the device shows the succession of the recipes stored in
memory.
•Holding the key for 10”, the total amount of m³ delivered by the machine (with a decimal
number) is indicated: see example in Figure 9.
Figure -9
2 4 5. 7
t o t
M E M

6
By pressing the STOP/C key, will appear the number of times the electrovalve has been opened (see fig.
10), divided into 10.
Figure –10
Pressing the STOP/C key, the normal visualization is restored.
NOTE: The totalizators go automatically to zero when they reach respectively 999,9m³ and 9990 times
(visualized: 999).
•To prevent from modifying the recipes, it is possible to protect the setting and modification
operations, pressing the Pkey for 5”; the display indicates the wording as in Figure 11, in which the
code 147 has to be entered.
Figure -11
Then, pressing the Pkey, the display indicates the wording as in Figure 12:
Figure -12
Pressing the 1key, the wording diS appears, indicating that the recipe programming is disable; pressing
the 2key, the wording Abi appears, indicating that the recipe programming is enabled.
E L. U
2 0 3
C o d E
P r G
r E c i
A b i

7
Pressing Pthe normal visualization is restored.
•Free delivery: it is possible to exclude the liter-counter (for example in case of malfunction of the
part) by means of the special program P99:
Figure -13
With the START and STOP keys the electrovalve opens and closes.
3.5 ERROR MESSAGES AND CORRECTIVE ACTIONS
All error messages are accompanied by flashing wordings and an intermittent acoustic signalling. The
latter one can be stopped with the STOP key. Using the START key the error message is cancelled and
the delivery starts again. On the contrary, the double STOP command cancels the delivery. The possible
error messages and relevant wordings are listed below.
3.5.1 Quantity counting error
After pressing START, after 12” this wording appears:
Figure -14
Possible causes:
A) If no water comes out of the service
•The cocks on the inlets of warm water and/or cold water are not open. Check that both are open and
that the connection to the pipes is correct.
•The inlet filters are obstructed. Clean them.
•The electrovalve dos not open. Contact the service.
F r E E
2 3. 5
2 1. 8
ÑE r r. LÒ
2 3. 5
2 1. 7

8
B) If water comes out normally and this message appears, it indicates a malfunction of the litre-counter.
Contact the service.
3.5.2 Probe error
The PrE wording appears on the display referred to the damaged or wrongly connected probe. Contact the
service for the replacement.
In the meantime, if the internal probe is broken, use the external probe to check that the temperature is
correct.
3.5.3 Tension fall
If there is a tension fall during a water delivery, the device stores the delivered quantity and interrupts the
delivery. When tension is restored, the following wording appears:
Figure -15
Press START to complete the dosage.
3.5.4 Parameter error
If, after the machine switching on, the following message appears on the display:
Figure -16
Some incongruous values have been found in the machine parameters.
For further information contact the service.
It is anyway possible to restart the machine with the standard settings:
•Press contemporaneously the keys 2 and 6 for 5 seconds: the device restores the default values and
restarts automatically. While holding the keys, the display shows the menu of figure 17 and indicates
that the standard values are being setting (manual by-pass)
Ñt E n SÒ
F A I
2 1. 7
Ñr A MÒ
d E F

9
Figure –17
3.6 OPERATION INTERRUPTION
If, with tension available, all displays remain off, it means that the electrical supply does not reach the
main board, or this latter is damaged.
Possible causes:
A) Over-tension and/or supply fuse failure. Open the fuse housing next to the supply plug, take out the
spare fuse and replace the damaged one.
B) Damage to the actuators board or the main board. Contact the service
4. MAINTENANCE INSTRUCTIONS
To assure a long working life of the internal parts of the device, are necessary following periodic checks:
1. Clean the filters (3) regularly, particularly if the water contains a high quantity of lime-scale.
2. When switching off the doser-mixer, set always the temperature regulation knob (5) to its mid
position, to allow a minimum number of moves in the mixer valve, particularly when deliveries at the
same temperature are carried out.
3. To clean the external surface of the doser-mixer, use a soft sponge and water or a neutral detergent;
for more resistant grime, use alcohol or turpentine.
d o M
M A n

10
4.1SPARE PARTS
[IT IS STRICTLY FORBIDDEN TO USE NOT ORIGINAL SPARE PARTS !
Figure –7 on page 4 shows the machine overview indicating the various components of the device and,
here following, Table 2 lists their description with relevant spare parts code numbers.
POS. DESCRIPTION CODE – 230V VARIANTS – 110V
1Cover with keyboard and electronics 3811032 /
2Regulation knob 3801208 /
3External temperature probe 3812511 /
4Actuators and supply board 3811534 3811537
5Thermostatic element 4400351 /
62 Wires liter counter 3801007 /
7Internal probe 3812522 /
8Electrovalve group with coil 3801127 3801129
9Electrovalve coil 4400405 4400406
10 Filter – No return valve assembly 3801230 /
11 Hot water ball gate valve (red) 3801229 /
12 Cold water ball gate valve (black) 3801228 /
--- Electrovalve internal kit 4400451 /
--- Main supply FAST fuse F 315mA L 250V 4400606 /
--- Pump control FAST fuse F 6,3A L 250V 4400608 /
--- Ø delivery hose 16 mm 3801209 /

1
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