Yoshitake MS-1 User manual

■EPDT-197■

MODEL MS-1,2,3,4

Noiseless Heater

PRODUCT MANUAL

Thank you very much for choosing the Yoshitake’s product. To ensure the correct and safe use of the

product please read this manual before use. This manual shall be kept with care for future references.

The symbols used in this manual have the following meanings.

Warning This symbol indicates a potentially hazardous situation that if not avoided

could result in death or serious injury.

Caution This symbol indicates a hazardous situation that if not avoided may result

in minor or moderate injury or may result in only property damage.

Table of Co te ts

1. Specifications···························································· 1

2. Dimensions and weight ··············································· 1

3. Nominal size selection method ····································· 2

4. Installation and operation

4.1 Precautions for installation ····································· 3

4.2 Example of piping ··············································3-4

4.3. Precautions for operation ······································ 4

Warranty Information

‐1‐ ■EPDT-197■

1. Specifications

Model MS-1 MS-3-13 MS-2 MS-4-13

Application Steam

Pressure range 0.05～0.7MPa 0.1～0.7MPa

Maximum warning sound

temperature limit

60℃90℃

Material Bronze Stainless Steel Bronze Stainless Steel

Connection JIS Rc screwed

2. Dimensions and weight

[MS-1, MS-3-13]

(mm)

Nominal

size

d L L

Weight

(kg)

15A

Rc 1/2

100

0.4

20A

Rc 3/4

110

0.4

25A

Rc 1

140

0.8

32A

Rc 1 1/4

180

1.0

40A

Rc 1 1/2

200

100

2.0

50A

Rc 2

270

130

140

4.0

[MS-2, MS-4-13]

(mm)

Nominal

size

d C B Weight

(kg)

15A

Rc 1/2

0.5

(

0.4)

20A

Rc 3/4

25A

Rc 1

125

3 (1.2)

32A

Rc 1 1/4

105

155

2 (2.2)

40A

Rc 1 1/2

115

175

4.2 (3.9)

50A

Rc 2

142

220

7.0

(5.4)

*The above values in parentheses are the

weights of MS-4-13

‐2‐ ■EPDT-197■

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: Steam volume (kg/h)

B: Desired temperature rise (℃)

Q: Water volume (kg)

A: Desired time(h)

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 (MS-2)

When the temperature of 7000kg of water is to be raised from 20 to 60℃over a

period of 1 hour, with a steam pressure of 0.5MPa,the nominal size is calculated as

follows:

=560(kg/h)

Referring to the “Nominal size selection chart”, find the point where the 0.5MPa and

the 560 (flow rate) lines intersect. As the point is between the 40A and 50A sizes, the

larger size of 50A is selected.

[

13]

[

13]

500

7000)2060(

−

‐3‐ ■EPDT-197■

4. Installation and operation

4.1 Precautions for installation

Caution

(1)

The noiseless heater should be mounted 300mm or more from the tank’s walls and

bottom. (Refer to 4.2 Example of piping)

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 the 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 4.2 Example of piping)

(3) Submerge the product in the tank. If it is unavoidable, keep it as close to the water

surface as possible. (Refer to 4.2 Example of piping)

When using the method shown in Fig. 3, make the L dimension as short as

possible.

(4) VB-7 vacuum relief valve is recommended in the piping in order to prevent a back-

flow condition when the steam is stopped.

4.2 Example of piping

Fig.1 Fig.2

‐4‐ ■EPDT-197■

4.3. Precautions for operation

Warning

(1)

Do not touch the product by bare hands

* Failure to follow this notice may cause burn or injury.

(2)

Submerge the product (In the case of Fig. 3 the tip of the pipe)

in the water (liquid)

in the tank.

Steam

may spout out and result in burns.

Fig.3

Fig.4 Fig.5

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