Daikin LRLEQ10AY1(E), Руководство по обслуживанию

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Appendix (Supplementary Information) SiENBE28-901
150 Air Cooled Refrigeration Condensing Unit
7.3 Trouble Case with Present Machine (R-407C)
Compressor damage due to the overcharge of refrigerant in the field
„ Cause
By mistake, a local installer added 1.3 times of the total refrigerant, not 1.3 times of the
additional charging refrigerant which is specified in the Installation Manual.
(It is already explained in the service news #MJ-08023. See the next page for more details.)
„
Prevention of new models
New models have improved compressor reliability by countermeasure control functions of
current models. Also, the amount of the additional charging refrigerant at the field specified
up to 0.1 times only.
Request for t
he ind
ication of additio
nal r
e
frigera
nt cha
rging amount and
installation date
*B
e su
re to f
ill th
e
b
lanks, which are
n
eeded
f
o
r af
te
r-sale
services.
Please calculate the a
m
ount of additional
re
friger
ant ch
arging as following metho
d.
(1)
By piping len
gth of system
Ple
ase calculate from the total length of the
liquid pip
es. C
a
lculate the total piping
leng
th of each size as follows.
(2)
By connectin
g sho
wcase
Ple
ase calculate from the capacity of the
conne
cted show
case as below tables.
(3)Constant
Add constant amount by outdo
or unit model
F
u
ll of
liquid
A fe
w
bu
bb
le
s
flow.
Sea
led st
at
e (
{
)
S
ho
rt
age
of
r
e
fr
igera
nt
(
5
)
B
ubble
s
come ou
t at
a
ll times.
(A
)
(B
)
Manufa
cture's label
val
u
e
(A
)+(
B)
T
o
tal a
d
ditional
charging amou
nt
kg
Cha
rging amount
(Factory se
t)
kg
T
o
tal a
m
ount of
re
frigerant
kg
Total length of
φ
15.9
liquid pipe
s
+
T
o
tal length
of
φ
12.7 liquid pipes
–
Total le
ngth of
φ
9.5 liq
uid pipes
–
Char
ging
amount
by piping length
(m)
×0.19
(m
)×0.12
(m)
×0.0
6
(1)
kg
Capacity of showcase (*Note.
)
Amount of refrigera
nt
Show
case
Bl
ower
coi
l
MT
LT
less than 5kW
1.
1kg
1.4kg
0.6
k
g
Fr
om
5
kW
to le
ss th
an
10k
W
2.
3kg
3.2kg
1.2
kg
Fro
m
10
kW
to
le
ss
than 1
5kW
3.
4kg
5.2kg
1.7
kg
Fro
m
15
kW
to
le
ss
than 2
0kW
4.
6kg
2.3
k
g
Fro
m
20
kW
to
le
ss
than 2
5kW
5.
9kg
3.0
k
g
Fro
m
25
kW
to
le
ss
than 3
0kW
7.
0kg
3.5
k
g
Fro
m
30
kW
to
le
ss
than 3
5kW
8.
2kg
4.1
k
g
Fro
m
35
kW
to
le
ss
than 4
0kW
9.
7kg
4.9
k
g
40kW o
r more
11
.0
kg
5.5
kg
Ca
pa
ci
ty
o
f
show
case
kW
+
Ca
pac
ity o
f
blow
er coil
kW
–
Char
ging
amount
by conn
ecting
showcase
A
m
o
unt of
refriger
ant
kg
Amount of re
frigerant
kg
(2)
kg
Constant (3)
kg
Char
ging
amount
by adju
stment
(4)
kg
Ou
tdoor un
it
Amount of refr
ig
erant
LR
LEQ
5,
6
AY1•LRM
EQ
5,
6AY
1
1.0kg
LR
LE
Q8~
12A
Y1•
LR
M
EQ8
~1
2AY
1
3.0kg
LR
LEQ
15
~20A
Y1•
LR
ME
Q15~
20AY1
3.5kg
*Note) 1.
Case of showcase th
e
cond
ition of capacity
(evaporat
ing
temperatu
re)
MT (Me
dium
temperatu
re):
–10°C LT (
Low temper
ature)
:
–35°C
2.
Case of blower coil, th
e
cond
ition of capacity is
10°C (
T
d)
.
(1
)+(2
)+
(3
)+(4
)
(4)By adjustment
(When the liq
uid eye shows shortage
of
refriger
ant.)
When
test
running, add r
e
frigera
nt if th
e
liquid
eye n
o
t be in sea
ling states at
coolin
g operat
ion.
(4)By adjustmen
t
≤
(2)By connecting showcase
×
0.
1
D
o
not be over 1
0
% of (
2
) amou
nt by
conne
cting showcase
.
3
P
2
5
15
93
-1
A