Yoshitake MS-6 Manuel utilisateur
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EPDT-055a
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MS-6
Noiseless Heater
Instruction Manual
Thank you very much for urchasing our Noiseless Heater.
Please read this instruction manual thoroughly before using the Noiseless Heater, so that
you may do so correctly and safely. Please carefully store this manual in a handy lace.
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The following safety symbols are used in this manual.
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Warning
Caution
Contents
1. S ecifications ······························································ 1
2. Dimensions and weights ··············································· 1
3. Nominal size selection method ···································· 2
～
3
4. Noise characteristics charts ········································ 3
～
4
5. Installation and o eration
5.1 Precaution for installation········································ 5
5.2 Exam le of i ing ··················································· 5
5.3 Precaution for o eration ············································ 5
After sales service
This symbol indicates a otentially hazardous situation that, if not
avoided, could result in death or serious injury.
This symbol indicates a hazardous situation that, if not avoided, may
result in minor or moderate injury. (“Caution” may also be used to
indicate other unsafe ractices or risks of ro erty damage.)
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EPDT
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055a
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- 1 -
1. S ecifications
Fluid Steam
Nominal size 15A-50A
Pressure range 0.05~0.7 MPa
Maximum warning sound
tem erature limit 90
℃
Material Stainless steel
Connection JIS Rc screwed
2.2 Dimensions and weights
(
mm
)
Nominal
size d L D Weight
(kg)
15
A
Rc1/2
48.5
35
0.25
20
A
Rc3/4
49
4
4.
5
0.40
25
A
Rc1
52
50
0.52
32A
Rc
1
1/4
55
60
0.77
40
A
Rc1
1
/2
59
70
1.15
50
A
Rc2
65
105
2.99
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EPDT
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055a
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3 Nominal size selection method
Nominal size selection chart
Formula for calculating the required nominal size
The steam volume “W” required to raise the tem erature of “Q” amount of water by “B”
degrees Celsius in “A” amount of time is calculated as follows:
W:Steamvolume(kg/h)
Q:Water volume(kg)
B:DesiredTem .rise(
℃
)
A:Desired time(h)
Based on the steam volume (W kg/h) and steam ressure(P MPa)values obtained by the
above formula,the a ro riate nominal size is selected using the “Nominal Size Selection
Chart”.
A
QB
w
500
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EPDT
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055a
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- 3 -
Nominal size calculation exam le
When the tem erature of 7000kg of water is to be raised from 20 to 60
℃
over a eriod of
1 hour, with a steam ressure of 0.5MPa,the nominal size is calculated as follows:
=560 (kg/h)
Referring to the “Norminal Selection” chart, find oint (A) where the 0.5MPa ( ressure)
and the 560 (flow rate) lines intersect. As oint (A) is between the 40A and 50A sizes,
the larger size of 50A is selected.
4. Noise characteristics charts
Steam Pressure : 0.3MPa
1
500
7000)2060(
w
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EPDT
－
055a
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- 4 -
Steam Pressure : 0.5MPa
*The noise characteristics indicated in the above charts may vary somewhat de ending
on the tank size and sha e, and on the noiseless heater’s mount osition,etc.
*Noise is measured at a oint 1 meter above the waterline.
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EPDT
－
055a
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5.
Installation and o eration
5.1 Precautions for installation
Caution
(1) The noiseless heater should be mounted 300mm or more from the tank’s walls and
bottom. (Refer to 5.2 Exam le of i ing)
* Vibration may occur in a tank by the flow of a liquid.
(2) Use it within the maximum warning sound tem erature limit.
* Vibration in a tank and i ing occurs.
(1) In order to obtain a result as lanned, lease fully utilize the nominal size selection
chart.
(2) There are various methods in attachment and lease take into consideration the
blow-off osition with the size of a tank etc. (Refer to 5.2 Exam le of i ing)
(3) VB-7 vacuum relief valve is recommended in the i ing in order to revent a back-
flow condition when the steam is sto ed.
5.2 Exam le of i ing
5.3. Precautions for o eration
Warning
(1) Do not touch the roduct by bare hands
* Failure to follow this notice may cause burn or injury.
(2) Submerge the roduct in the tank.
* Steam may s out out and result in burns.
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