14
2.7 Application Standard & Limit (For R22, R407C and R410A)
The following requirements apply to vertical type hermetic scroll compressors:
Standard: Applicable to ordinary conditions in Japan JIS B8616 or standards relative to JIS B8616, such
as standard rating conditions, maximum operating conditions, low temperature conditions, etc.
Limit: Applicable to transitional brief period, such as starting and beginning of defrost mode.
Table 2-6
68℃(155 °F)
65℃(149 °F) max. for R407C/R410A
10
(8 max. for R407C/R410A)
Evaporating Temp. + 12K(21 °F) Min.
Ambient Temp. + 11K(20 °F) Min.
130℃( 266°F) Max. for C-SB
Within 10cm(4in.) of
the discharge fitting
135℃( 275°F) Max. for C-SC
Inside of the well pile
on the top of comp.
Superheat: 5K(10 °F) Min.
Items 4,5,6 and 14
shall be kept.
Within ±10% of the rated voltage
Voltage at comp.
terminals
Three Phase Models: 85% of the rated voltage min.
Voltage at comp.
terminals
Single Phase Models: 90% of the rated voltage min.
On Period: Until the oil level returns to the center of the lower
bearing
For at least 7
minutes -on/3
minutes-off is
recommendable
Off Period: Until balance of high and low pressure is obtained
Oil/Refrigerant(wt.)≥0.35
(Specific gravity of the Oil: SAY56T: 0.92; FV68S: 0.94)
C-SB: Center of the lower bearing
C-SB:Bottom of the lower bearing
C-SC: No less then 70% of the initial oil charge
Abnormal Pressure
Rise/Drop
Pressure Rise: see the Table 2-5
Pressure Drop: see the Table 2-4
Start/Shutdown: 34.32N/mm
2
Max.
Run: 12.26N/mm
2
Max.
System
Uncondensable
Gas Level
1 Vol.% Max.
Residual Oxygen 0.1 Vol.% Max.
24 hrs. after
vacuuming:
1.01kPa (0.15 psig)
Max.
* Operation beyond the above limits must be approved by PAPCDL.