Daikin VRV Plus Series General Information Manual page 180

Si33-003.book Page 178 Monday, June 25, 2001 9:06 AM
Service Tools
Tool name
2. Torque wrench
3. Vacuum pump with check valve
Reverse flow prevetive vacuum adaptor
4. Leak tester
5. Refrigerant oil
(Air Compal)
6. Gauge manifold for R-407C
Charge hose
(Hose adator with ball value)
178
Diference from previous tool
Change of dimension B DimensionB
Size increase only for 1/2" and
Nominal size
5/8" pipes
No change in tightening torque
No change in pipes of other sizes
Class-1 pipes : R-407C
Must be equipped with a EX.) Left side of the left fig. (Tasco Japan)
mechanism to prevent reverse
oil flow.
Previous vacumm pump can be
used by installing adaptor.
Previous testers detected
chlorine.
Since HFCs do not contain
chlorine, new testers detect
hydrogen.
Can be used for HFC and
HCFC units.
Oil and refrigerant types are
different.
(Previous gauge manifold
cannnot be used.)
: http://splitoff.ru/tehn-doc.html
SiE33-003
New tool specifications
Unit:mm
Class-1 Previous
1/2 24 24
3/8 27 27
Discharge speed 50L/min (50Hz)
60L/min (60Hz)
–6
Maximum degree of vacuum 5×10 Torr
Suction port UNF7/16-20 (1/4"flare)
UNF1/2-20 (5/16"flare) with adaptor
Hydorogen detecting type
Applicabe refrigerants
R410A, R-407C, R404A, R507AR134a,etc.
Contains synthetic oil, therefore it can be
used for all types of refrigerant piping.
Offers high rust resistance and stability over
long period of time.
High pressure gauge
–0.1~3.5Mpa (–76cmHg~35kg/cm²)
Low pressure gauge
–0.1~1.5Mpa (–76cmHg~cm²)
1/4"
Available with and without hand-operate
valve that prevents refrigerant from
escaping from hose.
No oil is used in pressure test of gauges.→
Prevention of gauge contamination
Temperature graduation indicates the
relationship between pressure and
temperature in gas saturation condition.
New Refrigerant R-407C