Johnson Controls YVAHP0721CW Series, Руководство по обслуживанию

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1-10
SM-16007
INSTALLATION
*
: Interchangeability is available with current R22
O
: Only for Refrigerant R410A (No Interchangeability with R22)
: Prohibited
)
: Only for Refrigerant R407C (No Interchangeability with R22)
Measuring Instrument and Tool
Interchangeability
with R22
Reason of Non-Interchangeability and Attention
(
+
: Strictly Required)
Use
R410A R407C
Refrigerant
Pipe
Pipe Cutter,
Chamfering
Reamer
* *
-
Cutting Pipe
Removing Burrs
Flaring Tool
*O *
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for R410A.
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Flaring for Tubes
Extrusion
Adjustment Gauge
O
-
Dimensional Control
for Extruded Portion
of Tube after Flaring
Pipe Bender
* *
* In case of hard temper pipe, bending is not
available.
Use elbow for bend and braze.
Bending
Expanding Tool
* *
* In case of hard temper pipe, expanding of tube is
not available. Use socket for connecting tube.
Expanding Tubes
Torque Wrench
O *
* For 1/2 inch D. (12.7mm), 5/8 inch D. (15.88mm),
spanner size is up 3/32 inch (2mm).
Connection of
Flare Nut
* *
* For 1/4 inch D. (6.35mm), 3/8 inch D. (9.52mm),
3/4 inch D. (19.05mm), spanner size is the same.
Brazing Tool
* *
* Perform correct brazing work. Brazing for Tubes
Nitrogen Gas
* *
* Strict Control against Contamin
(Blow nitrogen during brazing.)
Prevention from
Oxidation during
Brazing
Lubrication Oil
(for Flare Surface)
O )
* Use a synthetic oil which is equivalent to the oil
used in the refrigeration cycle.
* Synthetic oil absorbs moisture quickly.
Applying Oil to
the Flared Surface
Vacuum
Drying
O
Refrigerant
Charge
Refrigerant
Cylinder
O )
* Check refrigerant cylinder color.
+
Liquid refrigerant charging is required regarding
zeotoropic refrigerant.
Refrigerant Charging
Vacuum Pump
* * +
The current ones are applicable. However, it is
required to mount a vacuum pump adapter which
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Vacuum Pumping
Adapter for
Vacuum Pump
6
O
)
Manifold Valve
O )
* No interchangeability is available due to higher
pressures when compared with R22.
+
Do not use current ones to the different refrigerant.
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cause sludges, resulting in clogging or compressor
failure.
Connection diameter is different; R410A: UNF1/2,
R407C: UNF7/16.
Vacuum Pumping,
Vacuum Holding,
Refrigerant Charging
and Check of
Pressures
Charging Hose
O )
Charging Cylinder
* Use the weight scale to ensure proper charging of
the unit.
-
Weight Scale
* *
-
Measuring
Instrument for
Refrigerant Charging
Refrigerant Gas
Leakage Detector
6
O
)
* The current gas leakage detector (R22) is not
applicable due to different detecting method.
Gas Leakage Check
6
: Interchangeability with R407C.