HydroMatik DG4 User manual

Manual
Atomizer Air Humidifiers
Type DG4 / DG8

1
1.. Instructions ......................................................................................................................... 2
1.1. Operational Safety notes .................................................................................................... 2
1.2. Transport ............................................................................................................................ 2
1.3. Technical data .................................................................................................................... 3
1.4. Schematic diagram ............................................................................................................. 4
1.5. Description of Operation ..................................................................................................... 5
1.6. Faults .................................................................................................................................. 6
1.6.1. Output fall off ................................................................................................................... 6
1.6.2. No water in the pan ......................................................................................................... 6
1.6.3. Water fault ....................................................................................................................... 6
1.7. Maintenance ....................................................................................................................... 6
1.. Installation .......................................................................................................................... 8
1.1. Atomizer ............................................................................................................................. 8
1.2. Hygrostat ........................................................................................................................... 8
1.3. Control box NR ................................................................................................................... 8
1.4. Installation of DG ................................................................................................................ 9
1.. Water installation ............................................................................................................... 10
1.1. Water feed .......................................................................................................................... 10
1.2. Safety overflow ................................................................................................................... 10
1.3. Elektrische Überlaufsicherung, Niveausteuerung, Wasserfüllung bei DG8 ....................... 10
1.. Electrical installation ......................................................................................................... 11
1.1. Electrical installation ........................................................................................................... 11
1.2. Legend for Wiring Diagrams DG ........................................................................................ 12
11.. Spare Parts ....................................................................................................................... 20

Page 2
1. Instructions
Dear Customer,
Microatomization and fast freshwater exchange ensure optimum
operating properties. Our range of products includes devices
with circulation air blower for fast, uniform moisture distribution
and also still humidification (without circulation blower) for spe-
cial applications.
The control box NR operates to an extraordinary high degee of
precision and automatic controls 1 to 4 air humidifiers. The inte-
grated auromatic freshwater control ensures that the residual
water in the unit is essentially used up after reaching the set
humidity level and, when restarted, freshwater is immediately
fed to the unit and atomized. The unit can be set to a range of
30-90% relative humidity with the room hygrostat RH1 and the
duct humidistat KF 1.
The DG4 is not available with the automatic freshwater control.
1.1 Operational Safety notes
Observe all safety and warning notices on the unit.
Observe applicable national accident prevention regulations.
Turn off the power before service work or repairs are done to the
unit.
Work on the electrical installation must be carried out by quali-
fied electricians.
1.2 Transport
Carefully transport, load or unload the atomizer to avoid any
damage.
Pay attention to the pictograms on the carton.
Upon receipt of the unit, make sure that:
• Type and serial number on the type plate correspond with
order and delivery notes.
• That the equipment parts are complete and in perfect con-
dition.
Note: File immediately a written report to your shipping agent in
case of transport damage.

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1.3 Technical data
* effective volume depends greatly on required room humidity
** special voltage on request
Type HygroMatik DG4
with air circulation
DG8
with air circulation
humidififying capacity [kg/h] 4 8
effective volume* [m3]400 1200
circulation air volume [m3/h] 350 600
motor power rating [kW] 0,14 0,25
power supply** V/50Hz/3/N
nominal current A
230
0,65
-
V/50Hz/3/N
nominal current A
- 360 - 420
0,77
V/50Hz/3/N
nominal current A
- 210 - 240
1,3
height
diameter
[mm] 540
280
620
390
operating water volume [l] 0,5 0,5
max. water pressure [bar] 6 10
Water connection:
feed pipe
safety overflow
R 1/4“
R 1/2“
R 1/4“
R 1/2“
electric
safety water supply
-Yes
weight
operational weight
[kg] 4,5
5,0
15,0
15,5

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1.4 Schematic diagram
1. Electric motor
2. Atomizer disc
3. Baffle grid
4. Water feed cone
5a. Mechanical float - only DG 4
6. Water solenoid valve for operating level
7. Mechanical overflow
8. Atomized droplet spray
9. Terminal box
10. Fan impeller
11. Carrier air flow
Nur bei DG8:
13. Mechanical level float and microswitch for electrical safety
overflow/guard
14. Water solenoid valve for electrical - safety overflow guard
15. drain connection

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1.5 Description of Operation
HygroMatik atomizing air humidifiers work on the centrifugal
principle.
There is a water pan in wich a normal operating water level is
maintained by means of a regulating system consisting of an
electrical float (5) and a water solenoid valve (6). The water is
drawn up on the outside of the atomizer disc (2). This causes the
water to travel outwards as a film on the underside of the disc
until it becomes detached at the edge, where it is flung at high
velocity into the guide vanes of the baffle grid (3) and is atom-
ized into fine droplets, suspended in the air, evaporate and the
humidity is immediately taken up by the air. For higher rates of
humidification, the evaporative effect is intensified by the fan and
the carrier air flow (11). The carrier air flow is blown not through ,
but over the bonnet of the humidifier, so as not to suck in the
dust from the air of the room.

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1.6 Faults
1.6.1 Output fall off
If the humidification rate drops off, or the humidifier ceases to
function, check the following:
• The motor protection switch. If it repeatedly cuts out, have
it checked by an electrician.
• Main fuses.
• Control fuse in the control box NR.
• Set the selector dial on the RH hygrostat to 90% for a short
period; the air humidifier should start up immediately.
• Check the function of the solenoid valves.
1.6.2 No water in the pan
• Check the function of the float wich controls the operating
level and check the quantity of water filled into the pan.
• If necessary, depending on the amount of water found,
shift the float to a higher or lower position in the slotted
hole in its holder.
• Check the functioning of the mechanical float and micro-
switch in the electrical overflow control system.
• Check the function of the water solenoid valves, especially
that they close satisfactorily and check the strainer in the
inlet union.
• DG8: Wassermagnetventile auf Funktion prüfen, insbe-
sondere einwandfreie Schließfunktion und Filter in der
Zulaufverschraubung.
1.6.3 Water fault
Red lamp on control box NR:
• See 1.7.2
1.7 Maintenance
Periodic cleaning and checking of the level control system and
particularly the water solenoid valves, should be carried out at
intervals depending on the degree of fouling.

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• Remove the water pan (4 handnuts) and clean.
• Clean the water feed cone.
• Clean the baffle grid. If there is much scale formation, use
an ordinary commercial scale remover to remove it, taking
the baffle grid out if necessary. Rinse thoroughly with
water.
• Check the level control system - the electrical float and the
solenoid valve (check that it closes properly).
• Check the electrical overflow control system - the mecha-
nical float / microswitch and solenoid valve (check that it
closes properly).
• Run the motor and check for any bearing noises.
• Check that the overflow line (if present) is not obstructed.
• Carry out a trial run.
• Readjust the humidity sensor in the hygrostat by compa-
ring to an accurate measuring instrument.

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1. Installation
1.1 Atomizer
Install approximately centrally over a gangway if possible (to
facilitate maintenance). If a number of humidifiers are used, dis-
tribute them uniformly over a area.
For ceiling heights up to 3.5 m, mount directly under the ceiling;
in case of higher ceilings, suspend such, that the bottomof the
humidifier is approx. 2.5 - 3 m above the floor. Minimum ceiling
and lateral clearances as shown in installation drawing 2.4.
When suspension chains are used, it is essential to spread and
fix them at 4 points, otherwise there is a risk of the unit rotating
at start-up with breakage of the water line. The humidifier must
be suspended precisely horinzontally (lenght or shorten the sus-
pension chains).
1.2 Hygrostat
Mount at a height of approx. 1.5 - 2 m on a column or inside wall
at a point where normal atmospheric conditions prevail, not in
direct sunlight and not above a source of heat. Distance from air
humidifier, 1.5 m min. 5 m max..
1.3 Control box NR
Install at a place where it is easy to see, so that an indicated
fault can be seen and cleared.

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1.4 Installation of DG
a: DG4 min. 0,4 m
DG8 min. 0,8 m
b: DG4 min. 0,4 m
DG8 min. 0,7 m
c: DG4 min. 1,0 m
DG8 min. 2,5 m
d: DG4 min. 1,0 m
DG8 min. 2,5 m

Page 10
1. Water installation
1.1 Water feed
The connection on the humidifier to the water feed line is a 1/4“
BSP externally threaded nipple. With water pressures up to 10
bar, (DG4 max. 6 bar) connect directly to the water main; other-
wise fit a pressure reducing valve. Min. working presssure, 1
bar.
The water feed line should be brought down from the ceiling
(otherwise condensation around the line might occur).
It is advisable to insert a strainer in the common feed line and
stop valve for each humidifier.
1.2 Safety overflow
Install an overflow line with a continuous downward slope to
drain, from the 1/2“ nozzle on the water pan. Hose and pipe size,
15 mm i.d. minimum, depending on the downward gradient. If
space does not permit the installation of an overflow pipe, the
electrical overflow control system must be provided (DG 4 - not
deliverable with electrical safety overflow guard).
1.3 Elektrische Überlaufsicherung, Niveau-
steuerung, Wasserfüllung bei DG8
The level in the water pan in controlled by means of a regulating
system consisting of an electrical float and a solenoid valve, fit-
ted as standard equipment. In addition, as an optional extra, an
overflow control system may be fitted wich immediately shuts off
the water feed when the max. water level is reached and wich
signals the malfunction of the primary level control by a red
warning light at the NR control box. The air humidifier continues
to operate normally, but with a higher water level.
To abolish see faults 1.7.
Operation - water filling: DG4 / DG8 approx. 0.5 l

Page 11
1. Electrical installation
1.1 Electrical installation
• All work must be carried out by qualified electricans.
• Carry out the electrical installation in accordance with the
electrical ciruit diagrams.
Connect max. 4 atomizers to one control box NR.
Note: All NR units are equipped as standard with automatic
freshwater control.
After the set humidity level has been reached, the solenoid-oper-
ated water valve „operating level“ switches off first, while the
motor or the diffuser system continues to run for several min-
utes, there by using up the residual water in the tray. When
restarted, freshwater is immediately fed to the unit and ato-
mized.
Caution: If the unit is briefly switched on and off again by adjust-
ing the hygrostat, a time delay of approx. 5 minutes must elapse
before the motor switches off.
• Set the motor protection switch at the nominal
amperage stated on the name plate.
• Main fuses must be supplied by the customer.
• A 4 A control fuse is incorporated to the terminal block in
the control box NR.

Page 12
1.2 Legend for Wiring Diagrams DG
b1 Electrical float for operational level
b2 Electrical float for electrical safety overflow
F1 Motor protection switch
F1 Motor protection relais
F1 Safety fuse, 4 A
H1 LED „Stand-by“ (green)
H2 LED „Humidification“ (yellow)
H3 LED „Fault“ (red)
Hy Hygrostat
K1 Main contactor
K11 Delayed relais
M1 Motor 380 V 3N 50 Hz
M2 Motor 230 V 3N 50 Hz
M3 Motor 230 V 1N 50 Hz
S1 Main switch
Y1 Solenoid valve for automatic water feed
Y2 Solenoid valve for operational level

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