Danfoss RT 1 Guia De Instalacion página 2

ENGLISH
Pressure switches
*) For complete list of approved refrigerants,
www.products.danfoss.com and search for
individual code numbers, where refrigerants
are listed as part of technical data.
**) Only for RT 1A, RT 5A
Technical data
Range
(P )
e
Type Reset
[bar]
auto
RT 1
-0.8 – 5
RT 1A
min.
auto
RT 5
4 – 17
RT 5A
max.
*1)
1.3 – 2.4 bar
*2)
0.6 – 3.0 bar
0.3 – 2.5 bar
Max. working pressure, PS / MWP:
22 bar / 315 psig
Max. test pressure, p': 25 bar
Maximum permissible bellows temperature: 70 °C
Enclosure: IP66 according to IEC 529
Contact load
The marking, e.g.10 (4) A, 400 V ~ means
that max. connection current is 10 A
ohmic or 4 A inductive at 400 V ~. The max.
starting current on motor cutin (L.R.) may
be up to seven times the inductive load –
but max. 28 A.
The RT pressure controls comply with
*VDE = Verband Deutscher Elektrotechniker
Fitting
A set of Pg13.5 cable gland is attached to
the RT in a separate bag. To ensure IP66
(units with automatic reset) or IP54 (units
with external reset) grade of RT enclosure
it is necessary to assemble this gland as
with a cable, a metal blinding should be
also assembled.
on the valve panel or the compressor. Use
control is subjected to vibration, it should
be mounted on a soft intermediate base.
If pressure pulsations occur in the system,
e.g. by connecting the pressure switch to the
system through a capillary tube.
Mains connection
START = make. STOP = break
Cable diameter: 6 – 14 mm
The earth terminal 38 should be connected
to earth.
Re t protective cap.
© Danfoss | Climate Solutions | 2021.07
Adjustment
Set the pressure switch for minimum
actuating pressure (range setting).
NOTE: RT 5 and RT 5A with max. reset
should be set for maximum actuating
pressure (range setting). Setting is done
by rotating the main spindle 44, at the
same time reading the main scale 9. The
Adjustable
adjusting nut 19 according to the diagram
p
[bar]
the sum of the setting pressure and the
0.5 – 1.6
*1)
1.2 – 4
Example
*2)
of approx. 1.8 bar on type RT 1A (code no.
017-500766), while the same setting on
type
2.3 bar.
In general, turning the main spindle
automatically moves both the maximum
and minimum actuating pressures (break
and make pressures) up or down because
adjusting nut only alters the maximum
actuating pressures.
The scale of all RT types without reset
and RT types with min. reset is calibrated
in such a way that the scale setting
corresponds to contact change-over at
minimum actuating pressure (normal
setting).
In RT switches with min. reset, the pressure
in the bellow system must increase by a
RT switches with max. reset have a scale
which is calibrated in such a way that
the scale setting corresponds to contact
changeover at maximum actuating
pressure. (NOTE: contrary to normal setting).
The pressure in the bellows system must
decrease by a value which corresponds to
Accessories
DANSK
Pressostater
*) For komplet liste over godkendte kølemidler,
besøge www.products.danfoss.com og søg
efter individuelle bestillingsnumre, hvor
kølemidler er opført som en del af tekniske data.
**) Kun for RT 1A, RT 5A
Tekniske data
Regulerings-
område
Type Reset
(P )
e
[bar]
auto
RT 1
-0.8 – 5
RT 1A
min.
auto
RT 5
4 – 17
RT 5A
max.
*1)
1.3 – 2.4 bar
*2)
0.6 – 3.0 bar
0.3 – 2.5 bar
Tilladeligt driftstryk, PS / MWP: 22 bar / 315 psig
Maks. prøvetryk, p': 25 bar
Maks. till. temp. i bælg: 70 °C
Tæthedsgrad: IP66 iht. IEC 529
Kontaktbelastning
Mærkningen, f.eks.10(4) A, 400 V ~, angiver,
at der maks. må tilsluttes 10 A ohmsk eller
4 A induktiv belastning ved 400 V ~. Den
maksimale startstrøm ved indkobling af
motor (L.R.) må være op til syv gange den
induktive belastning – dog maks. 28 A.
RT pressostaterne opfylder betingelserne
i VDE* 0660.
*VDE = Verband Deutscher Elektrotechniker
Montering
Et sæt Pg13,5 kabelforskruning er vedlagt
produktet i en separat pose. For at sikre
kapslingsgrad IP66 (enheder med
automatisk reset) eller IP54 (enheder med
ekstern DANSK RESET) er det nødvendigt
at montere denne kabelforskruning som
ikke bruges sammen med et kabel, bør der
monteres en blindprop (metal skive).
Pressostaten monteres på ventiltavlen eller
på selve kompressoren. Benyt
apparatet kan blive udsat for vibrationer,
bør det monteres på et blødt underlag.
Forekommer der trykpulsationer i anlægget,
tilslutte pressostaten til anlægget ved hjælp
af et kapillarrør.
El-tilslutning
START = slutte. STOP = bryde
Kabeldiameter: 6 – 14 mm
Jordforbindelse tilsluttes jordskruen 38.
Beskyttelsesdækslet monteres.
AN21698644097301-000402 | 2
Indstillelig
p
[bar]
0.5 – 1.6
*1)
fast ca. 0.5
1.2 – 4
fast ca.1.2
*2)