Yoshitake MS-6 User manual

■EPDT-055■
MS-6
Noiseless Heater
Instruction Manual
Thank you very much for purchasing 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 place.
−−−−−−The following safety symbols are used in this manual.−−−−−


Warning


Caution
Contents
OverView ･････････････････････････････････････････････････ 1
1. Features ･･････････････････････････････････････････････ 1
2. Specifications ＆Performance
2.1 Specifications ･･･････････････････････････････････････ 1
2.2 Dimensions ＆Weights ･････････････････････････････ 1
2.3 Nominal Size Selection Method････････････････････････ 2〜3
2.4 Noise Characteristics Charts ･･････････････････････････ 3〜4
3. Maintenance ＆Inspection
3.1Cautionbeforetheoperation･･････････････････････････ 5
3.2ExampleofPiping････････････････････････････････････ 5
3.3Warningduringtheoperation ･･････････････････････････ 5
After sales service
This symbol indicates a potentially hazardous situation that, if not
avoided
,
could result in death or serious in
j
ur
y
.
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
p
ractices or risks of
p
ro
p
ert
y
dama
g
e.
)

■EPDT−055■
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OverView
The use of hot water is indispensable in food processing,cleaning,and plating operations.
Although the simplest and most efficient way to provide the hot water is by a direct heating
format,such a format often results in vibration and noise caused by steam blowing into the water
tank.These problems can be greatly reduced by mounting an MS-6 noiseless heater at the end of
the pipe.
1. Features
(1) Stainless steel construction for greater durability.
(2) Mounting is simple and economical.
(3) Maintenance free.
2. Specifications&Performance
2.1 Specifications
Fluid Steam
Pressure Range 0.05~0.7 MPa
Maximum warning sound
temperature limit 90℃
Material Stainless steel
Connection JIS Rc screwed
2.2 Dimensions & Weights
(
mm )
Nominal
Size dLD
Weight
(kg)
15A Rc1/2 48.5 35 0.25
20A Rc3/4 49 45 0.40
25A Rc1 52 50 0.52
32A Rc1 1/4 55 60 0.77
40A Rc1 1/2 59 70 1.15
50A Rc2 65 105 2.99

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A500 QB
W×
×
≒
2.3 Nominal Size Selection Method
●Nominal Size Selection Chart
●Formula For Calculating The Required Nominal Size
The steam volume “W” required to raise the temperature of “Q” amount of water by “B”
degrees Celsius in “A” amount of time is calculated as follows:
W:Steamvolume(kg/h)
B:DesiredTemp.rise(℃)
Q:Watervolume(kg)
A:Desiredtime(h)

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Based on the steam volume (W kg/h) and steam pressure(P MPa)values obtained by the above
formula,the appropriate nominal size is selected using the “Nominal Size Selection Chart”.
●Nominal Size Calculation Example
When the temperature of 7000kg of water is to be raised from 20 to 60℃over a periotd of 1
hour,with a steam pressure of 0.5MPa,the nominal size is calculated as follows:
Referring to the “Norminal Selection” chart, find point (A) where the 0.5MPa(pressure)and the
560(flow rate) lines intersect. As point (A) is between the 40A and 50A sizes, the larger size of
50A is selected.
2.4 Noise Characteristrics Charts
●Steam Pressure : 0.3MPa
560(kg/h)
1500
700040
W=
×
×
≒

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●Steam Pressure : 0.5MPa
※The noise characteristics indicated in the above charts may vary somewhat depending on the
tank size and shape, and on the noiseless heater’s mount position,etc.
※Noise is measured at a point 1 meter above the waterline.

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3.Maintenance&Inspection
3.1 Caution before the operation
Caution
(1) The noiseless heater should be mounted 300mm or more from the tank’s walls and
bottom.
※Vibration may occur in a tank by the flow of a liquid.
(2) Use it within the maximum warning sound temperature limit.
※Vibration in a tank and piping occurs.
(1)In order to obtain a result as planned,please fully utilize a nominal size selection chart.
(2)There are various methods in attachment and please take into consideration the blow-off
position with the size of a tank etc.(Refer to 3.2 Example of Piping)
(3)VB-7 vacuum relief valve is recommended in the piping in order to prevent a back-flow
condition when the steam is stopped.
3.2 Example of Piping
3.3 Warning during the operation
Warning
(1)Do not touch the valve directly with bare hands.
※Doing so may result in burns.
(2)Sink a noiseless heater into underwater in a tank.
※It is dangerous in order that steam may come out