13
Inspection before startup
1. Remove any loose material in the bottom of the water tray.
2. Close the bottom valve and fill the reservoir with water.
C
heck that the connections are tight.
3. Start the pump and check the direction of rotation by
touching the rubber ring with a screwdriver. Viewed from
above, the motor should rotate clockwise. If it rotates in the
wrong direction, switch two of the phases.
First start up/ Rinsing clean the humidifier
Due to residual material from the manufacturing process off
the cassettes the cassettes need to be cleaned/flushed.
1. Fill the water tray with water (AHU fan not running).
2. Open the bleed-off valve completely and run the pump for
about half an hour.
3. Shut off the pump and empty the reservoir. Clean the bot-
tom of the reservoir.
4. Refill the reservoir and start the pump.
5. Repeat the rinsing process until water is clear.
Adjustment of bleed-off flow
Move adjustment wheel from pos 1 to adjustment screw (a).
Adjust the adjustment screw (a) to achieve the desired bleed-off
flow (b) in l/min. Read off the flow at the lower side of the
float. In some cases, (for small humidifiers), the bleed-off may
be so low that the flow can-
not be read on the scale. In
these cases, remove the hose
from the bleed-off valve at
the connection with the
discharge pipe. The bleed-
off flow is then adjusted us-
ing a calibrated vessel and
timer to measure the water
volume.
Start-up
Periodic maintenance
Periodic maintenance is recommended in the spring following
each operating season, see below.
N
ote that no service work may be started before the safety
switch of the FA6 unit is in its ”off ” position.
Cleaning distribution holes
1. Shut off water supply and empty the reservoir by opening
the valve at the bottom before starting service work.
2. Open the safety catch on the distribution header by turning
a quarter turn. The catch ensures that the distribution head-
er does not release from the cassette during operation.
Service
The level of the water in circulating-water hu-
midifiers is very important. If the level is consis-
tently too low, humidifying performance may be
drastically impaired.
Service routine
Distribution header
Clean the distribution holes.
See below.
Pump filter
Clean the pump filter.
See below.
Reservoir
Clean the reservoir.
See below.
Annual service
Inspection routine
Check function of level switch
Check water level in reservoir.
See below.
Bleed-off valve
Check the bleed-off valve.
See below.
Humidifier cassette
Check that the cassette becomes
evenly wetted and that no calci-
um streaks can be found on the
inlet side of the cassette. Carry
out fault-finding if necessary
See page 16.
Hoses and couplings
Check that the hoses and cou-
plings do not leak.
Discharge pipe and trap.
Check the discharge pipe and
water trap. Clean if necessary.
Annual inspection
Direction of rotation
a
1
b
Inspection hatch with
rubber ring
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