7
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EPDT-213b
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5. Installation
5.1 Precaution for installation
Caution
1. Do not disassemble the product unless it is necessary.
* Disassembly may prevent the product from functioning properly.
2. Be sure to remove foreign substances and scale from the piping before connecting the product.
* Foreign substances and scale may prevent the product from functioning properly.
3. Be sure to install a strainer (60 to 80 mesh) at the inlet side of the product.
* Foreign substances and scale may prevent the product from functioning properly.
4. Be sure to install pressure gauges at the inlet and outlet sides of the product for operation check.
* Failure to follow this notice hampers correct temperature regulation.
5.
When installing, check the direction and posture of the product.
* Setting the product in a wrong direction or posture prevents the product from functioning properly.
6. Install the product to a place where the ambient temperature does not exceed the set temperature.
* The ambient temperature beyond the set temperature hampers correct temperature regulation.
7. Install a thermometer close to the thermal bulb.
* Failure to follow this notice hampers correct temperature regulation.
8. Make sure that more than 3/4 of the thermal bulb’s total length is in direct contact with the fluid to be
heated or cooled.
* Failure to follow this notice hampers correct temperature regulation.
9. The bend radius of the capillary tube should be more than 40 mm. Avoid bending at a sharp angle,
twisting or pulling it with force.
* Failure to follow this notice may damage the capillary tube and prevent the product from functioning
properly.
10. Make sure that the capillary tube is not in contact with steam piping.
* Failure to follow this notice hampers correct temperature regulation.
11.
Do not apply excessive load, torque or vibration to the product.
* Failure to follow this notice may result in malfunction or a drastically shortened service life of the
product
.
12.
The body and the sensor are separately packaged.
5.2 Installation of body
(1)
Be sure not to lose the bellows follower [13] (attached component).
(2)
Install the body to horizontal piping with the handle [12] facing upward.
(3)
Check the direction of the product so that the fluid flowing and the arrow marked on the body [1] are
in the same direction.
(4)
Be sure to install pressure gauges, a strainer and a bypass line to the piping. (See “7.5 Piping
example”)
(5)
The pressure of heating or cooling fluid should be reduced with a reducing valve if it exceeds the
maximum pressure.
(6) Before stopping operation of the product for an extended period, completely discharge the condensate
inside the product and piping, and close the stop valves installed at before and after the product.
(7) Before leading fluid into the product, be sure to remove foreign substances and scale from the piping
completely by using a bypass line.
5.3 Installation of thermal bulb
(1)
Although the thermal bulb [20] can be mounted in any posture, make sure that more than 3/4 of its
total length is in direct contact with the fluid to be heated or cooled.
(2)
Screw in the bushing [18] first, then use the washer of packing [19] to secure the thermal bulb.
(3) The bend radius of the capillary tube [21] should be more than 40 mm. Avoid bending at a sharp angle,
twisting or pulling it with force.
(4) Install a thermometer close to the thermal bulb.
(5)
When inserting the thermal bulb into the piping for temperature detection, it should be installed at a
point where the circulation is best.
* The thermal bulb is made of copper and can be easily bent if it bumps against something. Handle
with care.
