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Maintenance
06-236115-001
5-7
October 2014
Figure 5-1. Liquid Level Indicator
6. Check the ambient temperature where the HFC-227ea cylinders are stored and record the
temperature.
7. Refer to the appropriate calibration charts (see Figure 5-2 through Figure 5-7) and locate
the level reading on the vertical axis (labeled Flexible Tape Reading). Trace horizontally to
the right to the appropriate temperature line. Read the weight of HFC-227ea from the scale
at the bottom of the chart. Record the weight and date on the record tag attached to the
cylinder.
8. After taking the reading, carefully push the tape down into the liquid level housing. Replace
the protective cap.
Note: If the weight measured by the liquid level indicator indicates the cylinder should be re-
charged, we recommend the cylinder first be removed from service and the weight loss
verified using a weigh scale before recharging.
All HFC-227ea cylinders must be filled or recharged by weight using a platform scale or
equivalent. If weight loss is more than 5% of the HFC-227ea charge, the unit must be
recharged.
CAP
GRADUAT
E
D
TAP
E
S
H
O
W
N
I
N
M
AGN
E
T
I
C
I
NT
E
RLOCK
POS
I
T
I
ON
R
E
ADY TO
TAK
E
R
E
AD
I
NG
.
O
-
R
I
NG
BRASS
TUB
E
H
FC
-
227
ea
CYL
I
ND
E
R
TAP
E I
NS
I
D
E
BRASS
TUB
E
R
E
AD
I
NG
TAK
E
N AT
TOP
E
DG
E
OF
F
I
TT
I
NG
M
AGN
E
T
I
C
E
ND
OF
TAP
E E
NGAG
E
S
I
N
M
AGN
E
T
I
C
F
IE
LD
OF
FLOAT
WHE
N
TAP
E I
S
PULL
E
D
UP TO
TAK
E
R
E
AD
I
NG
.
M
AGN
E
T
EM
B
E
DD
E
D
I
N
FLOAT
.
FLOAT
-
FLOATS
ON
SURFAC
E
OF
L
I
QU
I
D
H
FC
-
227
ea
FR
EE
TO
M
OV
E
UP OR
DO
W
N
OUTS
I
D
E
OF
BRASS
TUB
E.
H
FC
-
227
ea
L
I
QU
I
D
L
E
V
E
L
R
E
TA
I
N
E
R
-
FLOAT
R
E
STS
HE
R
E WHE
N
CYL
I
N
E
R
I
S
EM
PTY
.
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