Danfoss MLI 20 Bedienungsanleitung

DN > 40 (1½")
Bypass installation
Fig. 1
Fig. 3
Moisture content - PPM (mg H O / kg refrigerant)
2
Fugtindhold - PPM (mg H O / kg kølemiddel)
2
Feuchtigkeitsgehalt - PPM (mg H O / kg Kältemittel)/
2
Contenido de humedad - PPM (mg H
MLI
Indicates /
Indikerer /
Zeigt /
Indica
Green / Grøn / Grün / Verde
DRY / TØR / TROCKEN / SECO
Chartreuse / Lysgrøn / Hellgrün / Color amarillo verdoso
CAUTION / FORSIGTIG / VORSICHT / CAUCIÓN
Yellow / Gul / Gelb / Amarillo
WET / VÅD / NAß / MOJADO
Table 1 / Tabel 1 / Tabelle 1 / Tabla 1
ENGLISH
Refrigerants
R22, R134A, Propane, Butane, R500 and
R502.
If the moisture indicator is removed the
MLI can alternatively be used as a normal
sight glass, for R717 (ammonia) also.
Installation
The MLI may be installed anywhere in the
liquid line. If the Main liquid line is larger
than 40 mm (1½") we recommend the MLI
to be installed in by-pass (Fig. 1).
Welding / Soldering
MLI must be disassembled during welding/
soldering (Fig. 2).
Assembling
Remove dirt and weld slag, if any, from
tubes and housing.
© Danfoss A/S (MR-MC/MWA), 08-2008
Instructions
O / kg refrigerante)
2
25°C
77°F
0-50
50-150
>150
Lubricate the seal face (Fig. 3) before the
indicator element is mounted and tightend
(Fig. 4).
Colour
From factory the MLI-housing is painted in
a reddish brown primer.
Indicator element
When received the indicator may not
indicate dry. This phenomenon does
not affect operation or calibration of the
indicator due to the fact that action of the
indicator element is completely reversible.
As a result the indicator element will
change colour whenever the moisture
content of the system changes.
Time of colour change might differ from
plant to plant. We recommend that the
plant operates for at least 12 hours to
DKRCI.PI.GH0.A1.7G / 520H3004
MLI 20-40
Fig. 2
90 Nm
Fig. 4
Approx. Liquid Temp. / Ca. væsketemp. / Etwa Flüssigkeitstemp. / Aprox. Temp. de Líquido
R134a R22
40°C 25°C
104°F 77°F
0-80 0-30
80-225 30-90
>225 >90
R500
(Propane, Butane)
40°C 25°C 40°C
104°F 77°F 104°F
0-45 0-40 0-60
45-130 40-90 60-150
>130 >90 >150
allow the system to reach equilibrium
before deciding if the drier should be
changed.
The drying of the system should be
continued until the indicator element stays
dark green (Table 1).
Do not pressure test the MLI by means of
water, too much water is liable to damage
the indicator.
The indicator element are not suitable for
R717 (ammonia).
In case of doubt please contact Danfoss
A/S or distributor.
Errors and omissions excepted.
Subject to change without notice.
R502
25°C 40°C
77°F 104°F
0-10 0-20
10-45 20-65
>45 >65
1