Weight Saver
WEIGHT-SAVER HUMIDIFIER
manual
Weight Saver
INSTALLATION AND SERVICE MANUAL
Version: 1-2003
SMEVA PRODUCTS
0
17-06-04
WEIGHT-SAVER HUMIDIFIER
manual
©(NL) Copyright
Deze gebruikershandleiding is een uitgave van Smeva B.V. Valkenswaard Nederland.
Niets uit deze uitgave mag worden gekopieerd (inclusief vertalingen) als geheel of in gedeelte(n)
bijvoorbeeld door fotokopiëren, microfilms of gebruik in databanken als in computers, zonder de
voorafgaande schriftelijke toestemming van de uitgever.
De handleidingen geven de stand van de techniek weer, op het moment van het in druk gaan.
Wij behouden ons het recht voor om tussentijdse wijzigingen door te voeren in zowel technische en
uitvoering specificaties.
©Copyright door Smeva B.V. Nederland. Gedrukt in Nederland.
(GB) IMPRINT
These operating instructions are published by Smeva B.V. Valkenswaard Nederland.
No reproduction (including translation) is permitted in whole or in part e.g. photocopy, microfilming or
storage in electronic data processing equipment, without the express written consent of the publisher.
The operating instructions reflect the current technical specifications at the time of the print.
We reserve the right to change the technical or physical specifications.
©Copyright by Smeva B.V. Nederland. Printed in The Netherlands.
(F) Note de l'éditeur
Cette notice est une publication de Smeva B.V. Valkenswaard Nederland.
Tous droits réservés. Y compris traduction. Toute reproduction, quel soit le type, par exemple photocopies,
microfilms ou saisie dans des traitements de texte electronique est soumise à une autorisation préalable
écrite de l'éditeur.
Impression, même partielle, interdite.
Cette notice est conforme à la règlementation en vigueur lors de l'impression. Données techniques et
conditionnement soumis à la modifications sans aucun préalable.
©Copyright by Smeva B.V. Nederland. Imprimé en Hollande.
(D) Impressum
Diese Bedienungsanleitung ist eine Publikation von Smeva B.V. Valkenswaard Nederland.
Alle Rechte, einschließlich Übersetzung vorbehalten. Reproduktionen jeder Art, z.B. Fotokopie,
Mikroverfilmung, oder die Erfassung in elektronische Datenverarbeitungsanlagen, bedürfen der
schriftlichen Genehmigung des Herausgebers.
Nachdruck, auch auszugsweise, verboten.
Diese Bedienungsanleitung entspricht dem technischen Stand bei Drucklegung.
Änderung in Technik und Ausstattung vorbehalten.
©Copyright bei Smeva B.V. Nederland. Gedrückt in die Niederlande.
versie 1-2003
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WEIGHT-SAVER HUMIDIFIER
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TABLE OF CONTENTS
1.
Weight saver operation .....................................................................................4
1.1
The principle .....................................................................................................4
1.2
Installation.........................................................................................................5
1.3
Periodic cleaning...............................................................................................6
1.3.1 Weight Saver’s internal pipe system .................................................................6
1.3.2 Distribution system in the display case .............................................................6
2.
Electronic control unit........................................................................................7 ...
3
Electronic control unit indicators......................................................................8
4
Electronic control unit settings.........................................................................9
4.1
Settings on the front..........................................................................................9
4.1.1
Fan motor speed ......................................................................................9
4.1.2
Capacity regulation ...................................................................................9
4.1.3
Water level control....................................................................................9
4.1.4
Water level safeguard.............................................................................10
4.1.5
Rinse programme ...................................................................................10
4.2
Factory settings on the back of the pcb ..........................................................10
4.2.1
Maximum current intensity in the oscillator circuit...................................10
4.2.2
Temperature safeguard of pcb components ...........................................11
5.
Connectors .....................................................................................................11
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Maintenance ...................................................................................................12
7
UTB Compact and Weight Saver housing components ..................................13
7.1
Replacing the Weight Saver transducer plate................................................. 13
7.2
Replacing the transducer mounting head on a Weight Saver or UTB C .........13
7.3
Replacing the UTB C electronics and panel with Weight Saver...................... 14
7.4
Replacing a complete UTB C unit with a Weight Saver15
8
Fault finding....................................................................................................... 16
9
Technical specifications ................................................................................ 18
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1.
manual
WEIGHT SAVER OPERATION
1.1 The principle
The Weight Saver works on the ultrasonic principle (see figure 1). Using electronics, a
ceramic vibrating plate (the transducer) which is fitted in an easily dismantled screw top
(transducer mounting head) is made to vibrate at a specific frequency. Because of this
vibration, water above the vibrating plate is also made to vibrate and microscopically
small water droplets are flung upwards, high above the surface of the water. The
transport air is led through these droplets by a fan and this carries these droplets with
it.
In addition, the electronics control the level of water in the reservoir. This is set in the
factory to open the water valve for 2 seconds every 45 seconds. Because of this the
water is sprayed into the reservoir via 2 injection heads. The excess water disappears
via the neck into the water seal and then via the overflow to the drain connection.
1. Transport air input
2. Rinse water overflow
3. Water seal
4. Transducer mounting head
5. Transducer
6. Injection head
7. Cone of droplets
8. Oversized droplet
(falls back into reservoir)
9. Moisturized air output
Figure 1: Schematic drawing of the pipe system
Level sensors check if the minimum required quantity of water is present in the pipe
system. When this is not the case the electronics stop driving the vibrating plate and the
“level” indicator lights up.
The Weight Saver is suitable for connection to the normal drinking water supply. The
factory settings are base on an average water mains pressure of 4 Bar. The pulse and
pause time can be adjusted for a higher or lower pressure. This is covered in more detail
in chapter “Adjustments on the panel”. The maximum permissible water mains pressure
on the equipment is 10 bar.
If the hardness level of the drinking water is higher than 8 German degrees a decalcifier
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WEIGHT-SAVER HUMIDIFIER
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should be fitted, do not, however, decalcify further than ± 3 German degrees. Further
information about this can be obtained from Smeva Products.
1.2 Installation
The unit must be installed in a horizontal place (level) above the level of the drip tray. On
Smeva Products extra mounting brackets are fitted in the display case for this.
The unit must be connected to a drinking water pipe system. Ground water may not,
therefore, be used for humidifying.
The connection to the drain cannot be a permanent connection. Discharge of the drain
water must occur via a drip tray, a so-called “open” drain connection. There may be no
contact between the drain and the unit.
The connection hose between the unit and the distribution system must be smooth.
There should be no kinks in the hose. This can lead to a water seal.
A steam pipe has been fitted in the housing for the distribution of the humidified air in the
display case. The maximum length of the steam pipe is 5 meters. For each external
corner in the housing the maximum length will be reduced by 0.5 meters.
For the purpose of cleaning and service, the pipe is not glued and has been fitted in
open clamping brackets so that it can be detached.
There are output openings in the steam pipe. The output openings should be pointed
diagonally downward at approx. 7 o’clock to drain condensation.
The feed of humidified air has an overpressure and will decrease over the length of the
steam pipe. Optimal distribution of the humidified air can be obtained by fitting the yellow
sealing caps (supplied separately) in the output openings. Distribution depends on the
length. Additionally, the layout of the goods to be displayed in the display case can be
humidified more or less as required.
The electrical connection must be made in accordance with the instructions for operating
the display case. Switching on and off must be done via the display case’s control panel.
Depending on the position of the steam pipe in the housing (“warm” or “cold” section) a
self-regulating heating cable will be fitted in the steam tube, if necessary, to prevent
freezing. The electrical connection must be made in accordance with the instructions for
operating the display case. Switching on and off must run parallel with the humidifying
programme.
1.3 Periodical Cleaning
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1.3.1 The Weight Saver’s internal pipe system
The humidifier has the following design features to limit the consequences of any silting
up, or the growth of algae in the pipe system, to a minimum:
‰ The choice of material and design of the pipe system is such that a minimum of algal
and bacterial growth can occur.
‰ The walls of the reservoir are rinsed clean by the movement of the water in the
reservoir created by the vibrating plate.
‰ The reservoir and pipe system are regularly filled with clean tap water at 2 locations
and the pipe system is given an additional rinse once every four hours. Because of
this, the water temperature remains low, which gives algae no chance to grow the
reservoir.
Smeva Products advises cleaning the internal pipe system once each year. The unit can
be removed from the housing and can be cleaned over a sink using a round brush.
Normal tap water is sufficient for this purpose. Never use alkaline cleaners (soap)! Soap
remnants have a negative effect on vapour formation.
1.3.2 Distribution system in the display case
Smeva Products advises cleaning the steam tube at least twice a year.
The inside of the distribution steam pipe can be cleaned using a spray head which can
be obtained from Smeva Products. This is fitted to a 6 mm hose which, in its turn, can
easily be connected to the display case’s water supply.
If the spray head is not to hand, rinsing the system using a water hose will suffice.
‰ Turn off the water supply and disconnect the 6 mm water supply hose from the unit.
‰ Loosen the flexible output hose that connects the unit to the distribution system;
‰ Slide the spray head into the steam tube and turn on the water supply;
‰ Catch the dirty wastewater!
‰ The steam tube can be removed for thorough cleaning. This is not glued and is
fitted in open clip brackets so that it can be detached.
2.
ELECTRONIC CONTROL UNIT
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Figure 2: Front of pcb
Figure 3: Rear of pcb
Explanation of figure 2.
1. Capacity, vapour capacity indicator;
2. Valve, filling time indicator;
3. Level, water level indicator;
4. Temperature, temperature alarm indicator;
5. Airflow, air speed setting;
6. Capacity, vapour capacity setting;
7. Pause time, pause time setting;
8. Filling time, filling time setting;
9. Sensitivity, water level safeguard sensitivity setting.
10. Remote control, DIN plug connection for external control.
Explanation of figure 3.
11. Transducer connection plug;
12. Connection plug for fan and water supply valve;
13. Connection plug for water level safeguard;
14. Supply voltage connection plug;
15. Fuse – vibrating plate, 1A quick;
16. Fuse – water valve / fan 1A quick;
17. Current intensity potentiometer
18. Temperature safeguard potentiometer
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Figure 4: Rear
Explanation of figure 4.
19. Power supply external fuse – 1A slow.
3.
ELECTRONIC CONTROL UNIT INDICATORS
Capacity
Capacity indicator. During normal operation the blue LED will glow brighter as the
capacity is set higher.
Valve
Pulse time indicator. The green LED will light up during pulse time (water valve is open).
Level
Indicates that the water level in the reservoir is too low. If there is too little or even no
water at all in the reservoir the red LED will light up from flashing to a strong glow.
Temperature
Indicates temperature too high. When the temperature of the main transistor is too high,
the red LED lights up and the oscillator circuit is switched off
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manual
ELECTRONIC CONTROL UNIT SETTINGS
4.1 Settings on the front. All positions are based on making settings from the front.
4.1.1 Fan motor speed
Air flow
(Fig.2 pos.5)
This potentiometer can be used to regulate the flow of air through the pipe system.
Turning clockwise increases the speed.
Factory setting is maximum speed. Position, fully right.
4.1.2 Capacity regulation
Capacity
(Fig.2 pos.6)
The vapour capacity of the humidifier (quantity of moisture per hour) can be set using
this potentiometer. Turning clockwise increases the capacity.
Factory setting maximum. Position, fully right.
4.1.3 Water level control
Pause time
(Fig.2 pos.7)
The pause time (time during which the water valve is closed) is adjustable and can have
a minimum value of ± 30 seconds and a maximum value of approximately 3.5 minutes.
Factory setting ± 45 seconds. Position, turn fully right and then turn 45º to
the left.
Filling time
(Fig2 pos.8)
The filling time (period during which the water valve is open) is adjustable and can
have a minimum value of ± 0.8 seconds and a maximum value of approximately 3.5
seconds.
Factory setting ± 1 second. Position, turn fully right and then turn
approximately 45º to the left.
N.B. In general, an ideal water level will be obtained by using the standard pulse
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WEIGHT-SAVER HUMIDIFIER
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time. The pulse time need only be increased if the water main pressure is very low.
The pulse time may not be less than 1 second. The water level in the reservoir will
then become too low, causing the “Level” indicator (3) to light-up and the level
safeguard will regularly cut-off the supply of power to the transducer.
4.1.4 Water level safeguard
Sensitivity
(Fig.2 pos.9)
The water level safeguard is set ex factory so that the humidifier functions optimally with
average European drinking water quality (of 400mS).
Factory setting as described below.
N.B. If the quality of the drinking water is such that insufficient minerals are present in
the water, conductivity will be lower and the Level indicator (3) will light up and the safety
device will cut off power to the transducer. This will happen despite the fact that the
reservoir is filled. The sensitivity that the electrical conductors measure between the 2
sensors in the reservoir will have to be increased. If this situation arises, proceed as
follows:
The reservoir must be fully filled with water.
Turn potentiometer 9 to the right (clockwise) until the Level indicator (3) stops blinking
and humidification resumes.
‰ Next give it an extra turn of approximately 5º to the right (safety margin).
‰
‰
4.1.5 Rinse programme
For reasons of hygiene, the Weight Saver automatically flushes through every 4 hours.
4.2. Factory settings on the back of the pcb
4.2.1 Maximum current intensity in the oscillator circuit
(Fig.3 pos17)
The oscillator circuit is the circuit that provides the vibration frequency for the transducer.
This is protected by a fuse (1.0 A F – 250 V). The setting of the maximum circuit
intensity is set ex factory using a potentiometer. Never turn this potentiometer!
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4.2.2 Temperature safeguard of pcb components
(Fig.3 pos.18)
A number of components on the pcb are cooled by a cooling element on the front. If the
temperature is too high power to the transducer will be cut off. The temperature indicator
(4) will then light up. After cooling down the power will be restored and this indicator will
go out. The maximum temperature is set ex factory using a potentiometer. Never turn
this potentiometer!
5.
CONNECTORS
Front panel: External control. Fig.2 pos.10
DIN plug on the front of the Weight Saver.
This 8-pole DIN plug is for connecting an external
capacity regulator, 0 – 10 volt.
2-pole HKUTB-01-02 with cable for connection to
SCU control panel.
8-pole HKUTB-02-02 with cable for operating a
Weight Saver control panel.
N.B. After connection the capacity regulator
automatically switches over to the external signal.
Rear of pcb: Transducer
Fig.3 pos.11
1. brown
2. white
3. grey (earth)
Rear of pcb: Fan and magnetic valve Fig.3 pos. 12
1.
2.
3.
4.
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fan (black, -)
fan (red, +)
magnetic valve (blue)
magnetic valve (brown)
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WEIGHT-SAVER HUMIDIFIER
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Rear of pcb: Water level safeguard Fig.3 pos.13
1. white
2. white
TABLE OF CONTENTS
Rear of pcb: Power supply control
Fig.3 pos.14
1. blue (neutral)
2. yellow-green (earth)
3. brown (live)
6.
MAINTENANCE
The Weight Saver requires little maintenance. A few parts should be checked and/or
replaced once a year.
Transducer
Smeva advises having the transducer checked annually. The manufacturer gives a
service life of 10,000 operating hours at maximum capacity, thereafter this capacity will
gradually reduce. The service life is, however, also dependant on the quality of the
water. Replacing the transducer is described in chapter 7.
Fan
If the fan is dirty this can result in insufficient air being sucked in.
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WEIGHT-SAVER HUMIDIFIER
7.
7.1
manual
UTB COMPACT AND WEIGHT SAVER HOUSING COMPONENTS
Replacing the transducer plate on the Weight Saver
Parts required:
WS transducer plate
1) Shut-off the water supply, disconnect from the mains and remove the unit.
2) Above a sink, tip the water out of the internal pipe system and the unit’s
reservoir through the discharge and the output opening.
3) Remove the side panel and using pliers detach the transducer holder
connector and then detach the transducer holder from the pipe system.
Keep the O-ring for a good seal on the pipe system.
4) Detach the earth lead from the rear of the transducer holder and remove the
retaining ring by removing the spring washer using pointed pliers.
5) Detach the plastic holder and remove the rubber with vibrating plate from the
plastic holder.
6) Remove the transducer plate from the rubber.
7) Place the new transducer plate in the plastic holder. Pay attention to the
position of the boss. The rubber must make a good, flat fit.
8) Re-assemble in the reverse order and take into operation.
7.2
Replacing the transducer mounting head on a Weight Saver or UTB C
Parts required:
WS transducer mounting head complete with O-ring
1) Shut-off the water supply, disconnect from the mains and remove the unit.
2) Above a sink, tip the water out of the internal pipe system and the unit’s reservoir
through the discharge and the output opening.
3) Remove the side panel and using pliers detach the transducer mounting head
connector (11) and then unscrew the transducer mounting head from the pipe
system. Keep the O-ring for a good seal on the pipe system.
4) Screw the new transducer mounting head with O-ring onto the pipe system and
turn hand-tight.
5) Re-assemble in the reverse order and take into operation.
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WEIGHT-SAVER HUMIDIFIER
7.3
manual
Replacing the UTB C electronics and panel with Weight Saver
Parts required:
1)
2)
3)
4)
WS electronics and panel
Cap. regulating cable WS-SCU 2 mtr. (HKUTB-01-02)
Additionally, see chapter 5 Connectors.
Disconnect the unit from the mains.
If present, loosen the UTB Compact external capacity regulator control connection
on the back of the unit.
Remove the panel with the electronics from the housing.
Disconnect the connectors from the pcb.
Figure 5 illustration of position of UTB and Weight Saver connectors on rear side of pcb
5) Detach both wires 1 (brown) and 2 (blue) from the 2-pole external capacity regulator
connector and completely remove the wiring from the unit. Keep the pcb connector,
see point 6.
6) Detach water sensor wires 1 (blue) and wire 2 (red) from the 7-pole connector
and fit into the 2-pole plug from point 5 (red and blue can be swapped).
7) Place the 4-pole connector on the 4-pole connection. Remove the wires from the
7-pole plug and connect to the 4-pole plug.
Completely remove the magnetic valve earth wire (green/yellow).
8) Fit the water sensor 2-pole connection (from points 5 and 6).
9) Fit the 3-pole transducer plug.
10) Fit the 3-pole power supply (orange) connector.
11) Fit the electronics with panel and reassemble the unit in the reverse order
12) If present, replace the cable for connecting an external capacity regulator 0 – 10
volt loosened in point 2 with the 2–pole HKUTB-01-02. Connect the DIN plug to
the front of the Weight Saver.
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WEIGHT-SAVER HUMIDIFIER
7.4
manual
Replacing a complete UTB C unit with a Weight Saver
Parts required:
Weight Saver unit complete with power supply cable.
Cap. regulating cable WS-SCU 2 mtr. (HKUTB-01-02)
1) Shut-off the water supply, disconnect from the mains and remove the unit.
2) If present, loosen the UTB Compact external capacity regulator control connection
and power supply connection on the back of the unit.
3) Above a sink, tip the water out of the pipe system and reservoir through the
discharge and the output opening. Drain this away.
4) Replace the UTB Compact power supply cable with the new Weight Saver power
supply cable with modified connection.
5) If present, replace the cable for connecting an external capacity regulator 0 – 10
volt loosened in point 2 with the 2–pole HKUTB-01-02. Connect the DIN plug to
the front of the Weight Saver.
6) Install the new Weight Saver, see also chapter 1.2, and take into operation.
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WEIGHT-SAVER HUMIDIFIER
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Be vo ch tig in g fu n ctio n e e rt n ie t
N
B ra n d t L E D 'Po we r'?
C o n tro le e r d e a a n slu itin g e n va n d e
vo e d in g , d e 2 3 0 V -ze k e rin g e n d e
to e sta n d va n d e p rin t (vo ch tig ,vu il,
d o o rg e b ra n d e sp o re n e n /o f
co m p o n e n te n ).
N
Brand t LED 'Power'?
V e rva n g d e e le ctro n isch e re g e lu n it
J
J
J
C o n tro le e r o m g e vin g ste m p e ra tu u r
< 3 5 °C
B ra n d t L ED 'T m a x'?
Brandt LED 'T m a x'?
N
N
J
N
Is h e t re se rvo ir
m e t w a te r g e vu ld ?
B ra n d t L E D 'L e ve l'?
C o n tro le e r wa te rd ru k
C o n tro le e r d e m a g n e e tk le p o p
ve rvu ilin g . In d ie n d it h e t g e va l is
m o e t d e ze g e re in ig d wo rd e n .
J
N
Is d e ze k e rin g
va n h e t o scilla to rcircu it
d o o rg e b ra n d ?
V e rva n g d e e le ctro n isch e re g e lu n it
J
V e rva n g d e e le ctro n isch e re g e lu n it
C o n tro le e r d e p a rk e rs w a a ra a n d e
se n so re n zijn b e ve stig d . S te l d a n
in d ie n n o o d za k e lijk , d e p o tm e te r b ij
d ie h e t wa te rn ive a u b e wa a k t.
N
Bra n d t L E D 'L e ve l'?
J
N
N
F u n ctio n e e rt h e t
trilp la a tje ?
Is h e t
b u ize n ste lse l
ve rvu ild ?
T rilp a a tje ve rva n g e n in d ie n d e ze
stu k o f e rn stig ve rvu ild is.
V e rva n g d e e le ctro n isch e re g e lu n it
J
S ch o o n m a k e n m e t w a te r e n
a fwa sm id d e l
N
Be vo ch tig e r fu ctio n e e rt
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WEIGHT-SAVER HUMIDIFIER
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B e v o c h tig e r f u n c tio n e e r t, m a a r e r
w o r d t o n v o ld o e n d e d a m p
g e p ro d u c e e rd
Is d e
b e v o c h tig e r v o lle d ig
h o r iz o n ta a l g e m o n te e r d ?
N
H o r iz o n ta a l o p e e n s te v ig e
o n d e r g r o n d m o n te re n
J
Is d e in te r n e o f
e x t eBr rnaen d
c at pL aE cDi t e' Pi t os rwe eg re' ?l i n g
g o e d in g e s te ld ?
N
J u is t in s te lle n
J
J
B r a n d t L E D 'L e v e l'?
W a te r to e v o e r c o n tr o le r e n ,
s e n s o re n s c h o o n m a k e n ,
M a g n e e ta f s lu ite r c o n tr o le r e n
N
J
W e r k t tr ilp la a t
g o e d ?
1 d r u p p e l a f w a s m id d e l in
b u iz e n s te ls e l to e v o e g e n ,
in d ie n s le c h t v e r v a n g e n
N
Is h e t
to e r e n ta l v a n d e v e n tila to r
te la a g a f g e s te ld ?
J
H o g e r a f s te lle n
N
J
Is v e n tila to r v e r v u ild ?
S ch o o n m a k e n
N
J
Is w e e r s ta n d s to o m p ijp te
h o o g ?
S to o m b u is v e r v u ilt/v e r s to p t
B ij ijs v o r m in g v e r w a r m in g s b a n d
c o n tr o le r e n .
N
Z ijn d e
g e le d o p je s in
h e t b u is v e r d e e ls y s te e m
a a n g e b ra c h t ?
N
v e r d e lin g d o p je s c o n tr o le r e n
J
B e v o c h tig e r
f u c tio n e e r t m e t v o ld o e n d e
d a m p ?
N
E le c tr o n ic a v e r v a n g e n ,
u n it u itw is s e le n e n r e to u r f a b r ik a n t
J
B e v o c h tig e r f u c tio n e e r t m e t
v o ld o e n d e d a m p
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WEIGHT-SAVER HUMIDIFIER
9.
manual
TECHNICAL SPECIFICATIONS
Type plate
WEIGHTSAVER
MODEL
S/N
MFD
VOLTAGE
POWER
MANUFACTURED IN THE NETHERLANDS
Model: Weight Saver
S/N: Serial number
MFD: date of manufacture
Technical details:
Power supply:
Power
Capacity:
External fuse:
230 V / 50 – 60 Hz
50 Watt
500 gram / hour
1A Slow
Operating conditions
- Maximum hardness of drinking water:
- Water operating pressure:
- Temperature
- Humidity
SMEVA PRODUCTS
6-8 German Degrees (demineralised water
is recommended. Conductivity of the water
should, however, be > 50µs.
1 - 10 bar
10 – 35 ºC
20 – 80 % rL
18
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