CUOGHI MININEB User manual

Adiabatic humidifier

M869-GB-2_Letter 1 / 10 mini NEB US
1. Technical features
1.1. Technical data table
Atomization Capacity
Atomization CapacityAtomization Capacity
Atomization Capacity
2.6 lbs/hour
Power Supply
Power SupplyPower Supply
Power Supply
120 V, 60 Hz
Nominal Current
Nominal CurrentNominal Current
Nominal Current
0.12 A
Air Flow
Air FlowAir Flow
Air Flow
52 cfm
Feed Water Pressure
Feed Water PressureFeed Water Pressure
Feed Water Pressure
14.5 psi … 145 psi
Water Supply Tank Capacity
Water Supply Tank CapacityWater Supply Tank Capacity
Water Supply Tank Capacity
0.12 lbs
Working Temperatures
Working TemperaturesWorking Temperatures
Working Temperatures
+33.4 °F … +95 °F
Working Relative Humidity
Working Relative HumidityWorking Relative Humidity
Working Relative Humidity
0 … 100% R.H. non condensing
Degree of protection
Degree of protectionDegree of protection
Degree of protection
IP20
Tab.
Tab.Tab.
Tab. 1.1
1.11.1
1.1.
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1
1.2. Weight and dimensions
A
AA
A
12.7 “
B
BB
B
11.9 “
C
CC
C
13.3 “
Weight
WeightWeight
Weight
10.9 lbs
Tab.
Tab.Tab.
Tab. 1.2
1.21.2
1.2.
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M869-GB-2_Letter 3 / 10 mini NEB US
3. Installation
3.1. Preliminary operations
Installation requirements:
•Electrical Power Supply 120V/60Hz grounded and with protection devices.
•Water supply connection
•Water Drain connection
The installation must comply with local safety regulations.
3.2. Positioning
The MININEB must be fitted as in Pic. 3.2.1, Pic. 3.2.2, Pic. 3.2.3, in horizontal position, with the air filter
directioned below, leaving a correct space from the ground. Any other positioning compromizes the
correct performance of the machine.
3.2.1. Minimal distances
Pic
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. 3.2
3.23.2
3.2.
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Pic PicPic
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. 3.2
3.23.2
3.2.
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2
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. 3.2
3.23.2
3.2.
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3
A
AA
A
B BB
B
C CC
C
D DD
D
minima
minimaminima
minimal
lll 6.6 ft 1.6 ft 1.6 ft 2.6 ft
suggested
suggestedsuggested
suggested
9.8 ft 3.3 ft 4.9 ft 4.9 ft
Tab.
Tab.Tab.
Tab. 3.2
3.23.2
3.2.
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mini NEB US 4 / 10 M869-GB-2_Letter
3.3. Electrical connections
3.3.1. Electrical wiring diagram
1
11
1
Humidifier motor
2
22
2
Floating switch
3
33
3
Solenoid Valve
4
44
4
External Humidistat Bridge
A
AA
A
External Humidistat 120 V,
60 Hz, 0.2 A (Not supplied)
B
BB
B
Line Protection (Not
Supplied)
Tab.
Tab.Tab.
Tab. 3.3
3.33.3
3.3.
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The control and safety
devices, that are to be fitted
by the installer, must include
an adequate disconnecting
switch on both power supply
lines.
Pic.
Pic.Pic.
Pic. 3.3
3.33.3
3.3.
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1
– ––
– Wiring diagra
Wiring diagraWiring diagra
Wiring diagram
mm
m
3.3.2. Cabling
Referring to Pic. 3.3.2:
•Remove the cover of the electrical connection
box, located on the rear of the machine,
unscrewing screws V.
•Pass the electrical power supply cable
through the cable holder P.
•Take off the terminal board M from the box.
•Connect phase, neutral and earth cable on
the first three terminals of the terminal
board.
•Put the terminal board back into the electrical
box carefully inserting the metal bracket into
the slides G.
•Close the electrical connection box.
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. 3.3
3.33.3
3.3.
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M869-GB-2_Letter 5 / 10 mini NEB US
3.4. Hydraulic connections
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. 3.4
3.43.4
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– ––
–
Hydraulic connections Hydraulic connectionsHydraulic connections
Hydraulic connections
The installation of the
machines requires the
connections to the hoses
for water feeding and
discharge. The hoses,
included with the
humidifier, must be
fitted as described
below. The water su
pp
l
y
hose A has a threaded
bush G ¾ on both ends.
Connect the L-shaped
end to the solenoid
valve of the MININEB,
and the other end (the
straight one) directly to
a tap (B) or an
extention. It’s su
gg
ested
to connect a mechanical
water filter (C)
downstream the tap B.
Concerning the water
discharge, use the hose D supplied or, if a longer hose is needed, make sure it has an internal diameter of
3/8”. The hose must be installed as represented in Pic. 3.4.1 with a minimal gradient of 10°, to guarantee
the correct water discharge. An eventual siphon E must be on the main discharge and not on the hose
connected to the machine.
To guarantee a regular and efficient water discharge, carefully check that thedischarge hose is fitted with
a gradient and stright, without elbows or bottlenecks of any kind.
3.5. Wall installation
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. 3.5
3.53.5
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– ––
–
W WW
Wall mounting bracket
all mounting bracketall mounting bracket
all mounting bracket
Use the supplied metal bracket shown on
Pic. 3.5.1 with screws to install the
machine to a wall. The special bracket
can be used as a template to mark the
holes to be made on the wall, as in Pic.
3.5.2.
•Observe the minimal distances
written at the Par. 3.2;
•Check that the extremities of the
bracket are perfectly horizontal
before holing.
•Check that the wall where the
machine will be installed is able to
sustain the weight in operative
conditions.
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. 3.5
3.53.5
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2
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– Holes
HolesHoles
Holes on the wall
on the wallon the wall
on the wall

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3
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–
Wall installation Wall installationWall installation
Wall installation
•Drill three ¼ inch diameter holes about 1
1/4 inches deep on the wall, as in Pic. 3.5.2;
•Clean the holes internally.
•Insert the three screw anchors keeping the
espansion fins on the vertical plane; fasten
the bracket with the three screws.
•Screw without tightening two of the four
screws necessary to fit the mini NEB to the
bracket, as represented in Pic. 3.5.3.
•Screw the last two screws, and finally fasten
all the four screws.
•Check the installation solidity.
3.6. Hang up installation
The Hang up installation can be made using the
supplied, special shaped hooks (Pic. 3.6.1). It is
necessary to prearrange three support chains where
to hang up the machine.
The chains must be as vertical as possible, and
attached to connections able to sustain the wei
g
ht of
the machine (see: Tab. 1.2.1). Use metal chains,
preferably steel: chain material should not be affected
by humidity.
Observe the minimal distances written on Tab. 3.2.1.
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. 3.6
3.63.6
3.6.
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Hooks HooksHooks
Hooks

M869-GB-2_Letter 7 / 10 mini NEB US
4. Startup, control and switch off.
4.1. Checks
Before starting the humidifier, check the following points:
•All connections, both electrical and hydraulic, must be made as is written in the present manual.
•There must be no water dripping in the circuit.
•The air filter must be fitted.
•The water supply tap must be opened.
•The air distribution outlets must be correctly positioned.
4.2. Startup
To start the humidifier, close the main switch. The machine starts immediately, and after a few seconds it
starts nebulizing water. It’s suggested to check that during normal operation the water discharge does not
work continuously.
In the case that the there is a continuous water discharge see the possible solutions written at paragraph
par. 7 Problem
4.3. Switch off
To switch off the machine, open the main switch. The humidifier will slow down until it stops, meanwhile the
water contained in the machine will fall down on the water basin and trigger the siphon, that will discharge it.
It’s suggested to close the water feed tap.
Between the switch off and the successive start up of the humidifier there must be a time delay of at least
30 seconds, to allow the siphon to discharge the basin completely. If this does not happen the siphon
remains triggered, and the water will be continuously dischaged during normal operation, with an
unnecessary water waste.
5. Maintenance
5.1. Introduction
The mini NEB has been designed to guarantee an efficient and problems free performance for a long time.
It’s necessary to execute some simple maintenance procedures, the frequency of which depends heavily on
the environment conditions where the mini NEB operates, and the quality of the water supply.
WARNING: before executing any kind of maintenace operation, open the main switch and wait until the
machine completely stops. Close the water supply tap. Follow the general safety rules written on par.2.1.
Before restarting the machine make all necessary startup checks as written in this manual.

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5.2. Air filter cleaning
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. 5.2
5.25.2
5.2.
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–
Air filter disassemble Air filter disassembleAir filter disassemble
Air filter disassemble
The air filter must be periodically cleaned, as the continuous accumulation of dirt and dust progressively
reduce the air flow, and consequently affect the efficiency of the machine.
Referring to Pic. 5.2.1:
•Disassemble the filter unscrewing the two V screws that keep it in place.
•Remove the net R and the air filter F;
•Clean the air filter F with a vacuum cleaner or by rinsing it into soaped water. Dry it without wringing.
Reassemble all the pieces, carefully checking that the filter is correctly positioned and the net tightened with
the screws.
Never start the humidifier without the air filter F andthe protection net R correctly assembled and
tightened with the screws V. FILTER MUST BE COMPLETELY DRY BEFORE REINSTALLATION!

M869-GB-2_Letter 9 / 10 mini NEB US
5.3. Inspection and Cleaning of the Discharge Siphon
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. 5.3
5.35.3
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- --
-
Siphon SiphonSiphon
Siphon
It may be necessary to clean periodically the water
discharge siphon R (see: Pic. 5.3.1) as the
accumulation of dirt inside may compromise its correct
and efficient operation. When a cleaning is necessary,
see the following steps:
•Extract the hose T from the small pipe R;
•Take off the screws V;
•Take off the small pipe R;
•Carefully clean both the small pipe R and the pipe
S, that is located inside the basin;
Once cleaned, reassemble carefully all the pieces.
5.4. Inspection and cleaning of the water feed solenoid valve
The water feed solenoid valve is fitted with an inlet
filter that must be periodically checked and cleaned.
To access the filter, unscrew the plastic threaded bush
A of the water supply hose: the filter is located inside
the threaded bush E of the solenoid valve.
If cleaning becomes too frequent, it is advisable to
install a cartridge filter on the machine water supply
line(see: paragraph 3.4 - Hydraulic connections)
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. 5.4
5.45.4
5.4.
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Solenoid valve Solenoid valveSolenoid valve
Solenoid valve
6. Storage
6.1. General notes
•Store the machine in a room with a temperature between 14 °F and 140 °F.
•When the machine is in its package, keep the package vertical.
•Do not stack other packages on top.
6.2. Verifications to be made before and after a long working period
6.2.1. Before
•Disconnect all electrical connections and close water feed supply tap.
•Cover the machine to protect it from dust
6.2.2. After
•Check the air intake filter, clean it if necessary.
•Check that the floating switch works correctly, moving it, and check that the fan/disk assembly rotates
freely.
•Open the water supply tap.
•Check that all electrical connections are correctly executed, as by instructions.

mini NEB US 10 / 10 M869-GB-2_Letter
6.3. Product disposal
The machine is mainly composed of plastic components, and some metal parts, both recyclable. Before
disposing of it, separate the plastic parts (body, cover, grille, etc.) from the metal ones (motor bracket, wall
installation bracket, etc.). Remove the electrical cabling and dispose of it as by standard regulations
7. Problems and solutions
7.1. The humidifier doesn’t start
POSSIBILE CAUSES SOLUTIONS
The power supply is interrupted Check the electrical connections, starting from the
electrical control box to the internal box of the humidifier
The start capacitor is burned Substitute the capacitor with a new one
7.2. Air comes out from the air outlet but not nebulized water
POSSIBILE CAUSES SOLUTIONS
Water does not arrive to the basin Check that the water supply tap is opened.
Check that the water feed solenoid valve filter is not
obstructed, and that the hoses are correctly fitted and
unobstructed. Finally, check that the floating switch
inside the basin is free to move correctly.
The fan cone extremity is obstructed Clean the cone from the impurities and dirt inside
7.3. The Humidifier continuously discharging water
POSSIBILE CAUSES SOLUTIONS
The siphon is dirty When dirt accumulates inside the siphon, it is possible
that the siphon is triggered during normal operation.
Disassemble and clean the siphon completely (see: par.
5.3 Inspection and Cleaning of the Discharge Siphon)
The machine is installed not vertically Check that the machine is installed as described on
par.3.2 Positioning.