(8) During transportation, look at the display from
time to time to see if it keeps and established
storage temperature.
12.3 Monthly inspection
(1) Check the belt for looseness, degree of parallel
(stick-out of interline) and scraches. (bending of
the belt is to be about 7mm ~ 10mm.)
(2) Check if anything is touching to another part.
(compressor, pulley, belt, tubing and wiring)
(3) Clean carefully the refrigeration unit and drain
pipe with soft brush.
The fins will be deformed or damaged if a hard
brush is used.
Note:
(a) Never make a high pressure washing with a
high pressure washing machine as it crushes
its fin.
(b) Never make a steam washing as it raises its
inside pressure unusually high and is
dangerous.
(4) Check the refrigerant sight glass for color and
degree of flash.
Green = Normal
Yellow = Abnormal (water in it)
Lots of bubbles = Insufficient refrigerant
(Replacement of dryer and refrigerant is needed if
water is in it)
(5) Check refrigeration. (Check temperature indication
on the display and high and low pressure power.)
As to high and low pressure power, refer to page
41.
(6) Implement the matters to be taken care of at the
time of periodic inspection as shown on page 38.
12.4 Six-mouth inspection
(1) Implement the checking items required at the time
of installation-test operation and monthly
checking. (excluding a check for mis-wiring)
(2) Check the relay for contact point.
Correct defective contact point due to short circuit.
(3) Carry out the warning items at the time of periodic
inspection listed on page 38.
12.5 Bolt tightening table for each section
(1) Standard tightening torques for flare nuts.
Tightening torque N·m(kgf·cm)
9.8 ~ 19.6 (100 ~ 200)
19.6 ~ 29.4 (200 ~ 300)
29.4 ~ 39.2 (300 ~ 400)
39.2 ~ 49.0 (400 ~ 500)
49.0 ~ 58.8 (500 ~ 600)
(2) Tightening torques of general N·m (kgf·cm)
SS41C S45C SUS304
No mark or 4 or 7 No mark
0.6 ~ 1.0 1.0 ~ 1.5 0.8 ~ 1.0
M3
(6 ~ 10) (10 ~ 15) (8 ~ 10)
1.0 ~ 1.5 2.0 ~ 3.0 2.0 ~ 2.5
M4
(10 ~ 15) (20 ~ 30) (20 ~ 25)
2.0 ~ 2.5 4.0 ~ 5.0 3.4 ~ 4.4
M5
(20 ~ 25) (40 ~ 50) (35 ~ 45)
3.5 ~ 4.4 6.9 ~ 8.3 6.4 ~ 7.8
M6
(36 ~ 45) (70 ~ 85) (65 ~ 80)
8.4 ~ 9.8 17.7 ~ 19.6 16.7 ~ 19.6
M8
(86 ~ 100) (180 ~ 200) (170 ~ 200)
17.0 ~ 19.6 35.3 ~ 40.2 33.3 ~ 38.2
M10
(173 ~ 200) (360 ~ 410) (340 ~ 390)
29.4 ~ 33.3 59.8 ~ 69.6 56.9 ~ 65.7
M12
(300 ~ 340) (610 ~ 710) (580 ~ 670)
47.1 ~ 53.0 96.1 ~ 107.9 91.2 ~ 104.9
M14
(480 ~ 540) (980 ~ 1100) (930 ~ 1070)
73.5 ~ 84.3 156.9 ~ 176.5 142.2 ~ 165.7
M16
(750 ~ 860) (1600 ~ 1800) (1450 ~ 1690)
– 35 –
Applicable
copper pipe
ø 6.35
ø 9.52
ø 12.7
ø 15.88
ø 19.05
Material
Head
mark
Thread
diameter
v
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