Ā®Munters
:MX.
2
Plus Dehumidification system
4.2 Water coils
4.2.1 Product
description
The
unit can have water coils for cooling and heating.
The
cooling
or
heating is only regulated
if
the supply
air fan is running.
LL
CAUllON!
If
there
is
a risk
of
freezing when untreated outside air
is
used,
a frost protection monitor sensor must
be
fitted.
The
coils
in
the
unit
can
be
seriously damaged
if
this
is
not
done.
All units with
hot
water coils are always delivered with an insertion sensor and outlet for an insertion sensor.
The
header is provided with a plugged outlet for venting and draining.
If
there is a risk
of
freezing, the sensor
must
be fitted and connected according
to
the wiring diagram for the unit.
There
can
be
a risk
of
freezing
if
the process air is taken directly from outside.
If
the water
in
a coil freezes this could cause serious damage. A frozen coil must almost always
be
replaced.
The
warranty is
no
longer valid even
if
the cracks are
not
visible.
LL
CAUllON!
Hot and cold water supply lines must only be designed and executed by qualified personnel taking into account
the respective relevant local regulations.
4.2.2
Coil
maintenance
LL
w
ARNING!
Coil fins have sharp edges. Always wear protective gloves when working with coils.
Check for signs
of
corrosion
on
surfaces with flanges. Clean and repair
if
necessary.
If
applicable, remove the droplet separator.
Inspect
the inlet surface (towards the cooling coil).
If
dirty, rinse with warm water.
Air in the piping reduces the capacity
of
the coil. Vent
off
the air via the air nipple
on
the highest horizontal
part
of
the header.
In
the case
of
a long operation stop
or
when
the temperature is below freezing point, empty the water
out
of
the coil.
Do
this via the nipple
on
the lowest horizontal
part
of
the header.
Note
that some coils cannot
be drained.
LL
CAUllON!
Do
not attempt
to
clean
the
water coils mechanically.
NOTE!
In
the
case
of
damage, contact Munters Service. Do not attempt
to
carry out repairs.
1.
The
coils should
be
checked at least once a year, and cleaned
if
required.
2.
Some
of
the dust which passes through the filters comes
to
rest
on
the coil cells. This layer
of
dust
affects the air flow and reduces the rate
of
exchange leading to decreased unit efficiency.
3.
The
coils should therefore be kept clean. Cleaning can
be
done by using a vacuum cleaner, low pressure
compressed air
or
low pressure water and a soft brush.
Do
not
forget
to
clean the unit internally after the
coil cleaning. Never use a high pressure cleaner, this will damage the coil fins.
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