WDT SAUNA-Plus VII User manual

operation manual SAUNA-VII (07/12) page 1 of 14
SAUNA- Plus VII
Table of contents page
1. Function.............................................................................................. 2
2. Technical Data ..................................................................................... 3
2.2 The controller ............................................................................. 3
2.2.1 Cycle - pause in minutes ........................................................... 3
2.2.2 Splash quantity........................................................................ 3
2.2.3 Programme and test switch ....................................................... 4
2.2.4 Indications of the controller ....................................................... 4
2.2.5 Main switch ............................................................................. 5
2.2.6 Pre-indication of the splash ....................................................... 5
2.2.7 Adjustment of the dosing .......................................................... 5
3. The dosing pump ................................................................................. 6
3.1 Changing the hose set ................................................................. 6
3.2 Dosing valve............................................................................... 7
3.3 Fragrance canister....................................................................... 7
4 Installation / Taking the unit into operation ............................................. 7
4.1 Installation ................................................................................. 7
4.2 Electrical connection .................................................................... 8
4.3 Splash sprinkler .......................................................................... 9
5 Maintenance ...................................................................................... 10
5.1 Changing the canister................................................................ 10
5.3 Checking the dosing valve .......................................................... 10
5.4 Cleaning the splash sprinkler ...................................................... 10
5.5 Cleaning the protection filter ...................................................... 10
5.6 Checking the press switch .......................................................... 11
5.7 Trouble shooting ....................................................................... 11
6 Wiring diagramme .............................................................................. 12
6. Spare parts list .................................................................................. 13
6.1 Pump and controller ..................................................................... 13
7.2 Water part................................................................................... 14

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1. Function
The splash automatic SAUNA-Plus VI doses the splash full automatically to
the sauna oven.
The dosing cycle, the intensity of the splash (quantity of water) and the
arome-intensity (quantity of fragrance) are adjusted individual by 3 rotary
knobs.
For the dosing the solenoid valve (4) opens and the splash water flows to
the Sauna-oven. The water is accumulated at the diaphragm that is
installed behind the pressure switch (5). A certain pressure is built up. If
this pressure gets higher than 1,2 bar the fragrance dosing released, the
dosing pump (8) doses the adjusted fragrance quantity over the dosing
valve (9) into the water that streams to the oven. A a result it is ensured
that the fragrance concentrate is only dosed when there´s pressure in the
water tubing. Additionally the installed security combination (non-return
valve + blower) (3) ensures that no splash water is sucked back into the
supply tubing when there´s a sudden pressure loss (according to DIN
1988). A locker ball valve ½“ (1) and a fine filter (2) are switched in in
front of the solenoid valve.
Attention!
For the prevention of a flooding of the Sauna-room the Sauna-Plus has
necessarily to be locked electrical with the Sauna-oven. The internal time
delay of app. 30 minutes prevents the first splash onto the cold oven. If
necessary the time delay can be switched-off (e.g. at an external start of
the splash).
knob for fragrance
knob for water
rotary knob for cycle
10 to 60 minutes
programme and test
switch
pilot lamps LED

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2. Technical Data
The unit consists of:
-water connection ½“ female thread (app. 150l per hour)
-solenoid valve ½“
-peristaltic pump 12-24VDC for fragrance
-controller with connector for ore-indiation of the splash 230VAC
-connector for push-button or external start device
-voltage supply 230VAC 1,25A
-splash sprinkler 3/8“ female thread
-measures 44x41x17 cm
-fragrance: up to 15 ml pro Aufguss
-water consumption: up tp 800 ml per splash at adjustment 100%
-cycle time: 10-60 Minuten
options
-tube cutter (if the splash tubing does not fall)
-enlargement for the splash sprinkler
-connections for PTFE hose 6x1
-push-button for external control
-clock-timer
2.2 The controller
2.2.1 Cycle - pause in minutes
The cycle time (time from splash to
splash) is adjustable from 10 to 60
minutes. After the lapse of the cycle
time the times for the dosing of water
and fragrance run accordingly. The
operation time of the fragrance dosing
is limited to the opening time of the
solenoid valve by the pressure switch.
If the unit is operated externally (e.g.
by push-button) the pause time is
according to a locking time in which
no further splash can be started.
2.2.2 Splash quantity
The dosing times are adjustable by
the rotary knobs from 0 to 20
seconds. During this time the max.
quantity that is dosed is 0.8l water
with 15ml of fragrance.
Attention: fragrance can only be dosed into flowing water!!!

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2.2.3 Programme and test switch
The programme and test switch is to choose the operation programmes
and to test all functions of the SAUNA-Plus-VII:
-operation: controlled internally with cycle and splash
quantity
-operation with push-button: start of the splash by external push-
button and adjustment
„splash quantity“ cycle/pause is according to
locking time
-operation with clock timer: start of the splash according to exactly
adjusted time and according to the adjustment
of the “splash quantity”
-T-splash: a splash is started, afterwards the operation
LED blinks, the controller waits for a
readjustment
-T-pump: test of the fragrance pump for 20 seconds,
afterwards the operation LED blinks, the
controller waits for a readjustment
-T-valve: test of the solenoid valve for 20 seconds,
afterwards the operation LED blinks, the
controller waits for a readjustment
-T-pressure: test of the pressure switch (see 5.6)
-T-indication: test of the pre-indication for 20 seconds,
afterwards the operation LED blinks, the
controller waits for a readjustment
2.2.4 Indications of the controller
The operating state and the function sequence is indicated by three LED´s
at the controller.
green „operation“ shines at standard opearation or if test function
is activated
blinks at a disfunction or after the lapse of a test
programme
yellow „splash indication“ shines according to the adjusted pre-
indication time of the splash (see 2.2.6)
yellow „splash“ shines during the splash

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2.2.5 Main switch
You find the illuminated main switch (for switching the unit on & off) on
the left side of the controller housing.
2.2.6 Pre-indication of the splash
A pilot lamp that indicates the coming splash can be connected to the
controller. The lead time can be adjusted to 0 –30 –60 or 120 seconds
(see wiring diagramme).
2.2.7 Adjustment of the dosing
The cycle time (time from splash to splash) is adjusted by the left rotary
knob from 10 –60 minutes. After the lapse of the cycle time the times for
the dosing of water and fragrance run accordingly. The dosing times are
adjustable by the rotary knobs from 0 to 20 seconds. During this time the
max. quantity that is dosed is 0.8l water with 15ml of fragrance.

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Attention! If you switch the unit on the first splash always starts with a
delay of 30 minutes (set up ex works). This switch-on delay can be
switched-off manually (see wiring diagramme).
The fragrance dosing is only unlocked if water flows through the unit.
3. The dosing pump
For the fragrance dosing a peristaltic pump that
conveys smallest dosing quantities is used, even when
there are gas- or air bubbles in the suction tube.
Revolving rolls push the dosing hose against a walling
whereby the the liquid in the hose is pressed out in
front of the rolls and sucked back behind them.
It is extraordinary safe in its
function an in addition to this very
easy to handle (see mounting).
Fragrance concentrates are extremely aggressive. The used
dosing hose is resistant against the most concentrates that are
common in trade. Lifetimes from some months to some years are
possible. But there are also concentrates against which the hose
in not resistant. So we are not able to provide a warranty in this
case!
3.1 Changing the hose set
Remove the transparent pump
cover and the yellow roller
cover. To change the hose set
the suction and pressure
connections have to be pulled
forward. Turn the roller to the
right and pull out the pump hose
over the cut out at the roller. On
reassembly reverse this process.
At the installation act
contrariwise.
pump housing
safety disc
hose set
hose holder
suction side
pressure side

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3.2 Dosing valve
A back pression of water resp. a emptying of the
dosing tube is prevented safely by the use of a
spring-loaded non-return valve.
The valve body is completely manufactured of
stainless steal, hose connection 4x1 mm –male thread 3/8“.
3.3 Fragrance canister
The SAUNA-Plus VII is delivered to be mounted on the wall, the fragrance
canister (volume 1.5 l) is pre-mounted at the mounting plate.
4 Installation / Taking the unit into operation
4.1 Installation
options
clock timer
Push-button for
external start of the splash
grommet 3/8“ thread
security device
according to DIN 1988 water supply
cold ½“
power socket
230V/AC
interlocked with the
oven
walling
splash tubing - should be
installed falling
splash sprinkler
output for the pre-
indication of the
splash

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The dosing unit SAUNA PLUS VI is delivered in a state ready for operation.
It has to be mounted on place that is accessable easily and a bit higher
than the oven.
The installed security device according to DIN 1988 is useable for
non-toxical fragrances for sauna splashs. A second pre-condition is
a free outlet.
If the tubing tends upwards to the oven a more significant security
device (tube cutter) has to be installed. If demanded the tube
cutter (article no. 14872) can also be pre-installed ex works. The
connection for the water supply at the ball valve is ½”, for the splash
tubing 3/8".
The fragrance canister has to be filled and the suction tube has to be hung
into it so that its end reaches the bottom of the canister.The roller of the
pump is packed seprately for transport and stock-taking to prevent a
deformation of the dosing hose. Insert the roller before taking the unit into
operation (see 3.1).
4.2 Electrical connection
To prevent that there is a dosing off-time of the sauna operation time, the
electric connection (power socket 230V) has to be locked by the controller
for the sauna oven.
The first splash comes after app. 30 minutes after the overplugging of the
voltage.

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4.3 Splash sprinkler
The scope of delivery includes a splash sprinkler made of stainless steel
(16) to distribute the water drops over the stones of the oven. Connection
for splash tubing is 3/8” female thread.
Longer splash tubings are deliverable on demand. To prevent a back
flowing if there´s a longer splash tubing it is possible to install a weak
spring loaded non-return valve before the oven. If a non-return valve is
installed a tube cutter is absolutely necessary!
Option:
For the assembly and safe fixing of the splash sprinkler, we offer a
grommet with two threads 3/8” made of stainless steel. About 10-15cm
over the oven, a app. 18mm hole is drilled into the sauna wall.
Furthermore, the wall holder with the rosette is pushed inside. The rosette
is fixed together with the delivered V4A screws on the sauna wall. Now the
splash sprinkler can be screwed-on over the sauna stones. Use only teflon
band for sealing to keep the cleaning of the sprinkler simply.
wall holder
option
splash
sprinkler
scope of
delivery

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5 Maintenance
5.1 Changing the canister
Release the canister lid from the empty canister and refill it.
Make sure not to overfill it.
5.2 Checking/ changing the dosing hose (see 3.1)
The hose set of the pump is exposed to a mechanical anch chemical wear.
For this reason the pump hose has always to be checked when the
fragrance is refilled. This is unavoidable to recognize damages in time and
to change the pump set. In general, the pump set has to be changed
every year. In case of aggressive fragrances, it hast to be changed more
often.
5.3 Checking the dosing valve
Some fragrance concentrates lead to disposals in the dosing tube and in
the dosing valve. In this case water may be pressed back at the splash,
especially if the dosing hose is already damaged. For this reason check the
dosing valve half a year, resp. when there´s a need to check it. For this
purpose release the dosing hose and screw out the dosing valve. If you
blow through the valve from the screw-in side it has to be hermetically
sealed. If this is not the case flush it with water from the connection side.
If this leads to no success insert a new valve.
5.4 Cleaning the splash sprinkler
After a certain operation time the splash sprinkler fossilises inevitably. For
the cleaning screw off the sprinkler and clean it mechanically with weak
acid. If you screw it up again Use only teflon band for sealing to keep the
cleaning of the sprinkler simply.
5.5 Cleaning the protection filter
Depending on the contamination of the fresh water, the filter has to be
cleaned in the supply. This is especially necessary shortly after the start-
up as there can occur some impurities in the pipeline and in the water.
Therefore lock the ball valve, screw off the sealing plug of the filter, pull
out the filter element and clean it up by flowing water. Install it again
afterwards. Pay attention that the sealing is not damaged.