10
M898-3_GB_letter
NEB 6500 and NEB 6500 R
to a water tap
B
, or to an extension. It is advisable to install
a mechanical filter
C
down-line of the tap
B
, as shown in
Pic. 14.
For the water drain use the plastic pipe
D
supplied or one
that is similar having a 0.39 inches internal diameter. The
pipe must be installed as shown in Pic. 14 with a minimum
slope of 10°, to guarantee the correct drainage of the water.
A siphon
E
must be on the main drain and not on the
drainpipe connected to the machine.
To guarantee regular drainage of the water, make sure
that the drainpipe has a slope and is straight, without any
bends or constrictions. The end of the drain tube must be
“in air” to prevent any back pressure.
Pic. 15 - Details of the end of the drain tube.
WARNING! Any failure in the drainage can cause water
dripping from the humidifier.
4.5 Final operations
»
Direct the outlets of the air diffuser. To do this, loosen
the screw that holds the diffuser on top of the machine,
and turn the diffuser: at the end of the operation block
the screw again.
»
Check that the hydraulic connections have been prop-
erly installed. Open the water supply tap and check that
there are no leaks along the supply circuit
5 Operation & Control
5.1 Preliminary checking
Before starting up the humidifier check that:
1. All the connections, both electrical and hydraulic, have
been done according to the instructions found in this
manual.
2. There are no leaks.
3. The air filter is fitted.
4. The water supply tap is open.
5. The distribution inlets are correctly positioned.
WARNING: prolonged use of the machine without water
supply can seriously damage the solenoid valve.
5.2 Starting
To start the humidifier turn on the main switch. The
machine will perform a washing cycle lasting about one
minute, as described in detail in par. “6.3 The washing/reset
cycle”. At the end of the cycle, if the humidistat contact is
closed, the humidi fier starts the motor and water atomiza-
tion begins.
IMPORTANT: The humidifier will start to atomize the
water only if the H-H contact is closed.
During operation check if the water is drained regularly. If
it should be necessary to adjust its humidification capacity,
follow the instructions indicated in par. “6.2 Adjusting the
humidification capacity”.
WARNING: if the humidifier works in a room with over
saturated humidity the air filter can impregnate reducing
the air flow. Use an humidistat or a timer to avoid this
situation.
5.3 Stopping
To stop the humidifier:
1. Take the humidistat to the minimum % R.H. value so
that the corresponding ON/OFF contact is opened.
2. Wait for about one minute to give the machine the time
to carry out the washing cycle.
3. Open the main electrical power switch;
4. Close the water supply tap.
WARNING: if the main switch is opened while the machine
is atomizing the electronic board will NOT perform the
washing cycle and the basin will NOT be emptied.
6 Electronic control
6.1 The electronic board
The operation of the NEB 6500 is controlled by the elec-
tronic card, that has the following functions:
»
Adjustment of the humidification capacity.
»
Starting and stopping of the washing/reset cycle.
The regulation of the capacity is made with dip-switches.
