(.,
HEATING CYCLE
FIGURE 15
#!#!
&
!%!"
%%
$
! $#
%!
%%
%%
$
'"
%%
#!!!
&# #!
%%
!"#
#!"##
"!
$!
# 886=9 05+0*(:, +08,*:065 6- 8,-80.,8(5: -36= 05 /,(:05. 46+,
!""!
#
'" %%
V-CHARGING
#/, ;50: 09 -(*:68>*/(8.,+ =0:/ :/, (46;5: 6- ! 8,@
-80.,8(5: 05+0*(:,+ 65 :/, ;50: 8(:05. 73(:, #/09 */(8., 09
)(9,+ 65 ( 4(:*/05. 05+668 *603 (5+ 6;:+668 *603 =0:/ (
-66: 44 305, 9,: 68 <(8>05. 3,5.:/9 6- 305, 9,:
8,-,8 :6 :()3, -68 8,-80.,8(5: */(8., (+1;9:4,5: )3(52
97(*, 09 786<0+,+ 65 :/, ;50: 8(:05. 73(:, :6 309: (*:;(3 -0,3+
*/(8.,
LINE SETDIAMETER
Ozs per ft. (ml per mm)
adjust from 25 ft.
(7620mm) line set*
Vapor
Liquid
05
05
6;5*,
44
44
43
6;5*,
43
6;5*,
43
05
44
05
44
05
44
05
44
TABLE 5
* If line length is greater than 25 feet (7620 mm), add this
amount. If line length is less than 25 feet (7620 mm), subĆ
tract this amount.
A-Leak Testing
::(*/ .(;., 4(50-63+ (5+ *655,*: ( +8;4 6- +8> 50@
:86.,5 :6 *,5:,8 768: 6- .(;., 4(50-63+
CAUTION - When using dry nitrogen, a pressure reĆ
ducing regulator must be used to prevent excessive
pressure in gauge manifold, connecting hoses, and
within the system. Regulator setting must not exceed
150 psig (1034 kPa).
7,5 /0./ 78,99;8, <(3<, 65 .(;., 4(50-63+ (5+
78,99;80?, 305, 9,: (5+ 05+668 *603 :6 790.
2(
/,*2 305,9 (5+ *655,*:0659 -68 3,(29
NOTE - If electronic leak detector is used, add a
trace of refrigerant to the nitrogen for detection by the
leak detector.
!,3,(9, 50:86.,5 78,99;8, -864 :/, 9>9:,4 *688,*:
(5> 3,(29 (5+ 8,*/,*2
B-Evacuating the System
::(*/ .(;., 4(50-63+ (9 9/6=5 05 -0.;8, 65@
5,*: <(*;;4 7;47 =0:/ <(*;;4 .(;., :6 *,5:,8
768: 6- .(;., 4(50-63+ &0:/ )6:/ 4(50-63+ 9,8<0*,
<(3<,9 67,5 9:(8: 7;47 (5+ ,<(*;(:, 05+668 *603
(5+ 8,-80.,8(5: 305,9
NOTE - A temperature vacuum gauge, mercury vacĆ
uum(U-tube), or thermocouple gauge should be
used. The usual Bourdon tube gauges are not accuĆ
rate enough in the vacuumrange.
