Ariston MIROS Serie Manuel D'installation page 22

GB
2.4 Tools
TOOLS
A pressure gauge assembly
B pipe cutter
C recharge pipe
D electronic scale for refrigerant recharge
E dynamometric spanner (nominal ø 1/2, 5/8)
F clamp-shaped pipe vice
G refrigerant cylinder
H vacuum pump
I leak detector
A) Pressure gauge assembly
B) Pipe cutter
C) Recharge pipe
The recharge pipe for R410A refrigerant.
D) Electronic scale for refrigerant recharge
Due to its high pressure and speed of evaporation, R410A refrigerant may not be maintained in
a liquid state; as a result, refrigerant gas bubbles form inside the cylinder, making it diffi cult to
read the recharge values, and it is therefore recommended that an electronic scale be used to
be sure of the values. The electronic scale for the refrigerant recharge consists of a structure
with four support points to measure the weight of the refrigerant cylinder. The refrigerant is
recharged by opening/closing the valve.
E) Dynamometric spanner
The dynamometric spanner for nominal ø of 1/2" and 5/8" has a different size on each side to
comply with the modifi ed measurements of the pipe unions.
F) Clamp-shaped pipe vice
The pipe vice for R410A is fi tted with a clamp which has a receiving opening so that the copper
pipe projection may be regulated to 0-0.5 mm, during the processing of the pipe connection.
G) Refrigerant cylinder
H) Vacuum pump
A 1/2 UNF 20 thread/inch and corresponding seal are necessary.
I) Leak detector
For R410A, a special leak detector for HFC refrigerants is used. It must have a high detection
sensitivity.
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