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Idiomas disponibles
Idiomas disponibles
The units are delivered with a combined high and low
pressure control type KP17W, KP17WB or with a high pres-
sure control type KP7W.
The pressure controls KP17W/KP17WB and KP7W are in
compliance with the safety standard EN 378-2.
The high pressure controls are set to cut out at 18 bar /
R134a and 27 bar /R404A.
The low pressure control cuts out at 0 bar (factory preset-
ting). Indications in bar overpressure (P
Version T0 without pressure control
Version without pressure control is supplied with refrigerant
receiver and a helium/dry air holding charge; it is designed
for use in refrigeration systems with expansion valve and is
to be completely soldered. The refrigerant receiver is ap-
proved for max. 32 bar operating pressure (see receiver la-
bel) and is HP marked.
Units according to British Standard 1608 and approved by
UL (UL identifiable through additional label) are supplied
with a fusible plug.
In the event of fire, the fuse will melt before the tempera-
ture reaches 150°C.
Version T0 with pressure control
Version with pressure control is supplied with refrigerant
receiver and a helium/dry air holding charge. It is designed
for use in refrigeration systems with expansion valve and is
to be completely soldered. These units are supplied with a
high pressure control type CC.
Installation
Installation, maintenance and commissioning must be
carried out by qualified specialists only!
All connections, i.e. solderings and flare joints, are to be
made professionally.
Protect the surroundings against admittance of unauthorised
persons. Pay attention to sufficient ventilation.
Remove transport safety devices, if any.
Mount the condensing unit horizontally. Use the correct
tube diameters.
Prevent any vibrations. Avoid smoking and open fire.
Refrigerant is to be removed and disposed of professionally.
Assembly of the condensing units
Prepare the tube connections from the evaporator.
It is recommended to use a drier with 3Å molecular sieves,
e.g. Danfoss type DML.
Use only dry components and avoid moisture entering the
system.
The system components must not contain any chlorine,
mineral oil, or other oily substances.
Maximum test pressure must not exceed 32 bar.
Evacuation (N2, T2, A01, A02 and A04)
Fig. 2. The process descriptions below are based on the
equipment shown.
1. Suction stop valve
2. Discharge stop valve
3. Connection to suction side
4. Shut-off valve to vacuum pump
5. Shut-off valve to charging cylinder
6. Connection to discharge side
7. Shut-off valve to discharge side
8. Shut-off valve to suction side
9. Connection to vacuum pump
1 0. Connection to charging cylinder
Connect the suction line to the suction stop valve (1) of
the unit.
Connect the suction line, via the filter drier, to the dis-
charge stop valve (2).
Make the connection (3) between the manifold and the
service connector of the suction stop valve (1).
Make the connection (6) between the manifold and the
service connector of the discharge stop valve (2).
Make the connection (9) between the vacuum pump and
the manifold (4).
Make the connection (10) between the charging cylinder
and the manifold (5).
Remove the protective caps from the spindles of both
stop valves (1) and (2).
Open valves (4), (7) and (8). Open stop valves (1) and (2) to
mid position. Start the vacuum pump.
Vacuum pumps, which are normally used for refrigerants
containing chlorine, cannot be used with R134a and
R404A/R507. Only a vacuum pump with
special Polyolester oil may be used for systems with refrig-
erant containing FCKW, HFCKW and HFKW. (Contact the
pump supplier.)
Evacuation (T0)
Evacuation takes place through the compressor den process
connector after complete connection in the refrigerating
circuit.
Plan sufficient time for the evacuation as it takes place
from the low pressure side only,
unless additional measures were taken to speed up the
evacuation.
Vacuum pumps normally used for refrigerants containing
chlorine must not be used with R134a and R404A/R507.
Only a vacuum pump with special Polyolester oil may be
used for systems with refrigerant containing FCKW,
HFCKW and HFKW. (Contact the pump supplier.)
Electrical connections
Prepare the electrical connections while evacuation is tak-
ing place. Do not start the compressor until the vacuum
has been broken. Remove the cover over the terminal
board. Connect the leads.
It is impossible to start the unit without a thermostat (18)
being connected or a lead between 1 or 2, respectively,
and L has been established (fig. 4-7).
4
Fig. 4. Wiring diagram for the series: P, T, N, F, S.
Fig. 5. Wiring diagram for SC with CSR (starting and oper-
ating capacitor).
Fig. 6. Wiring diagram for TL, FR and SC condensing units
with pressure control.
Fig. 7. Wiring diagram for SC condensing units with com-
bined high and low pressure control and CSR (starting
and operating capacitor).
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11. Main winding
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1 2. Start winding
1 3. Start relay
1 4. Winding protector
1 5. Start capacitor
1 6. Bleeder resistance
1 7. Run capacitor
1 8. Thermostat
1 9. Fan
2 0. Pressure control
Fit the terminal board cover.
Keep away flammables from the electrical equipment.
Refrigerant charging (N2, T0, T2, A01, A02 and A04)
When a vacuum of 0.5 mbar or lower has been reached,
shut off the connection to the vacuum pump by closing
all manifold valves.
Repeat the evacuating process once or twice if necessary
and then close all manifold valves. Close the service con-
nector of the suction stop valve (1) by turning the spindle
„anticlockwise" to the rear stop.
Refrigerant charging must take place from equipment not
contaminated with refrigerants containing chlorine.
For units with stop valves the rule is that refrigerant
should always be charged in liquid form through the dis-
charge stop valve of the unit in order to avoid liquid ham-
mer when the unit is started. If this rule cannot be ob-
served the compressor is not to be started until the pres-
sure and the temperature of the refrigerating system
have been equalized.
Open valves (5) and (7) of the valve manifold while keeping
the other valves closed.
When all liquid has been transferred to the discharge side
of the unit close the service connector of the discharge
valve (2) by turning the spindle „ anticlockwise" to the rear
stop. Remove all hose connections.
Fit the union nuts with blind caps on pressure gauge con-
nectors (1) and (2).
Fit and tighten up caps on the valve spindles.
Maximum refrigerant charges
Units with receiver. See fig. 8.
Units without receiver. See fig. 9.
The refrigerants stated on page 2 and 3 must be used.
It is recommended that only the right quantity of refriger-
ants necessary for correct function of the refrigeration
system be added.
For refrigeration systems with capillary tube the charge
must be adapted to suit each system type.
The operating charge must never exceed the capacity of
condenser and receiver.
Always avoid excess refrigerant charge!
Crankcase heater
If the maximum amounts of refrigerant cannot be ob-
served in T0, T2, A01, A02, A04 or T0 condensing units re-
spectively, a crankcase heater or a „ pump-down transmis-
sion" must be used. The crankcase heater must be fitted
directly over the weld.
The crankcase heater will heat the compressor oil during
standstill periods. When the refrigeration system has been
at a stand-still for longer periods the crankcase heater
must be cut in 2-3 hours before starting. The following
crankcase heaters are recommended
T L and FR: 35 W (code no. 192H2095)
S C: 55W (code no. 192H2096)
Cold start
After installing the unit the compressor must be allow-ed
to assume a temperature higher than 10°C before it is
started for the first time. This will prevent possible start
problems caused by too high oil viscosity.
At lower temperatures some tripping of the winding pro-
tector may be expected until the viscosity of the oil be-
comes reduced.
See also „ crankcase heater".
Never start during vacuum!
Winding protector
The compressors have a built-in winding protector. If the
protector cuts out while the compressor is cold it may
take approx. 5 minutes for the protector to reset.
If the winding protector cuts out while the compressor is
hot (compressor housing above 80°C) up to 45 minutes
may pass before the protector resets.
Checking the winding protector
In the event of a compressor failure a check must be
made by resistance measurement direct on the current
lead-in to find out whether the fault is due to motor dam-
age or simply a winding protector trip.
Fig. 3. Location of the winding protector in the electrical
circuit.
1 1. Main winding
1 2. Start winding
1 4. Winding protector
If resistance measuring shows that there is a connection
through the motor windings from points K and S of the
current lead-in, but a broken circuit between points K and
F or between S and F, this indicates that the winding pro-
tector has cut out. Therefore, wait for the protector to reset.
Important service and safety tips
The drier must always be replaced when a system has
been opened.
Blow through the system with dry nitrogen before soldering.
When a defective system is emptied the refrigerant must
be collected without mixing with other refrigerants, and
the refrigerant must not leak into the environment.
See also „ Installation".
The condenser and the complete condensing unit must
be cleaned regularly.
Specified maintenance and cleaning intervals must be ob-
served.
Working on components that are under pressure is dan-
gerous.
Beware of hot and extremely cold components. Beware of
moving components (e.g. fan).
Pay attention to sufficient ventilation.
Check the perfect operation of the fan.
The application limits stated by the manufacturer must be
observed.
If pressure controls are specified, they must be installed
professionally.
The operating condition must be monitored in order to
ensure perfect operation.
Check whether the shut-off valves (suction and discharge
side) are completely opened.
Ensure that EN 378 is observed.
If forced ventilation is necessary, this is to be clearly
shown (i.e. by a label).
Do not install in aggressive, moist or dusty environment.
Do not install or start in rooms containing flammable gases
or in installations operating with such.
PED (Pressure Equipment Directive 97/23EC)
Condensing units are no „ units" in accordance with the PED.
The unit/installation into which the condensing unit is
mounted/integrated, must be in accordance with the PED.
DEUTSCH
Diese Instruktion gilt für luftgekühlte Verflüssigungs-
sätze mit den auf Seite 2 aufgeführten Kältemitteln.
Ausführung N0/A00
Ausführung, für Lötanschluss, hat eine Helium/Trocken-
luftschutzgasfüllung und ist für die Verwendung in Kälte-
mittelsystemen mit Kapillarrohrbetrieb vorgesehen.
In Bezug auf Evakuierung und Kältemittelbefüllung sind
N0-Verflüssigungssätze wie Verdichter zu behandeln.
Ausführung N2
Die Ausführung wird ohne Kältemittelsammler, jedoch
mit 2 Absperrventilen und einer Helium-/Trockenluft-
schutzgasfüllung geliefert; sie ist für die Verwendung in
Kältemittelsystemen mit Kapillarrohrbetrieb vorgesehen.
In Bezug auf Evakuierung und Kältemittelbefüllung sind
N2-Verflüssigungssätze wie Verdichter zu behandeln.
Ausführung T2/A01 ohne Sicherheitsdruckschalter
Die Ausführung ohne Sicherheitsdruckschalter wird mit
Kältemittelsammler, 2 Absperrventilen und einer Helium-
/Trocken-luftschutzgasfüllung geliefert; sie ist für die
Verwendung in Kältemittelsystemen mit Expansionsven-
tilbetrieb vorgesehen.
Der Kältemittelsammler ist für max. 32 bar Betriebs-über-
druck genehmigt (Angaben entnehmen Sie bitte dem Ty-
penschild) und trägt die HP-Kennzeichnung.
Verflüssigungssätze gem. British Standard 1608 und UL-
zertfizierte (UL erkennbar durch ein zusätzliches Typen-
schild) werden mit Schmelzsicherung geliefert.
In Fällen von Brand wird die Sicherung ausgelöst, bevor
die Temperatur auf 150°C angestiegen ist.
Ausführung T2/A02/A04 mit Sicherheitsdruckschalter
Die Ausführung mit Sicherheitsdruckschalter wird mit
Kältemittelsammler, 2 Absperrventilen und einer Helium-
/Trocken-luftschutzgasfüllung geliefert.
Die Verflüssigungssätze werden mit einem kombinierten
Hochdruck- und Niederdruckschalter vom Typ KP17W,
KP17WB oder Hochdruckschalter Typ KP7W geliefert.
Die Druckschalter KP17W/KP17WB und KP7W entspre-
chen den Sicherheitsvorschriften der EN 378-2.
Die Hochdruckschalter sind so eingestellt, dass sie bei 18
bar / R134a und 27 bar /R404A ausschalten.
Der Niederdruckschalter schaltet bei 0 bar aus (Werksein-
stellung). Angaben in Bar Überdruck (P
Ausführung T0 ohne Sicherheitsdruckschalter
Die Ausführung ohne Sicherheitsdruckschalter wird mit
Kältemittelsammler und einer Helium-/Trockenluftschutz-
gasfüllung geliefert; sie ist für die Verwendung in Kälte-
mittelsystemen mit Expansionsventilbetrieb vorgesehen
und sind komplett zu verlöten.
Der Kältemittelsammler ist für max. 32 bar Betriebsüber-
druck genehmigt (Angaben entnehmen Sie bitte dem
Typenschild) und trägt die HP-Kennzeichnung.
Verflüssigungssätze gem. British Standard 1608 und UL-
zertifizierte (UL erkennbar durch ein zusätzliches Typen-
schild) werden mit Schmelzsicherung geliefert.
In Fällen von Brand wird die Sicherung ausgelöst, bevor
die Temperatur auf 150°C angestiegen ist.
Ausführung T0 mit Sicherheitsdruckschalter
Die Ausführung mit Sicherheitsdruckschalter wird mit
Kältemittelsammler und einer Helium-/Trockenluftschutz-
gasfüllung geliefert.
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