Mitsubishi Electric PUHY-P250YJM-A, Service Manual

Page: 122 / 272

[
IX
Test Run Mode ]
- 113 -
HWE10190 GB
(2) Example: PUHY-P500YSHM-A
(3) Sample calculation
CAUTION
Charge liquid refrigerant (as opposed to gaseous refrigerant) into the system.
ΠIf gaseous refrigerant is charged into the system, the composition of the refrigerant in the cylinder will change and may
result in performance loss.
[3/4"][98 ft]
[3/8"]
[3 ft] [3/8"]
[9 ft]
15.88 (30 m)
9.52
(3 m)
9.52
(1 m)
Liquid
separator
Liquid
separator
P600-F
P600-F
All the pipes in the figure are liquid pipes.
15.88 : 30 m = 30 m
9.52 : 3 m + 1m = 4 m
According to the above formula
The calculation result would be 11.24, and it is rounded up to the nearest 0.1.
The final result will be as follows:
Amount of refrigerant to be charged (kg) = (0.2 X 30) + (0.06 X 4) + 5.0 = 11.24kg
Amount of refrigerant to be charged = 11.3kg
All the pipes in the figure are liquid pipes.
[3/4"] : [98 ft] = [98 ft]
[3/8"] : [9 ft] + [3 ft] = [12 ft]
According to the above formula
The calculation result would be 395.5 oz, and it is rounded up to the nearest 1 oz.
The final result will be as follows:
Amount of refrigerant to be charged (oz) = (2.15 X 98) + (0.65 X 12) + 177 = 395.5oz
Amount of refrigerant to be charged = 396 oz
0000002115.book 113 ページ ２０１１年６月４日 土曜日 午前１０時４８分