7
■EPDT-213b■
5.1 Precaution for insta ation
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 irection an posture of the pro uct.
* Setting the pro uct in a wrong irection or posture prevents the pro uct 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
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 not
ice 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 loa , torque or vibration to the pro uct.
* Failure to follow this notice may result in malfunction or a drastically shortened service life of the
product.
12. The bo y an the sensor are separately package .
5.2 Insta ation of body
(1) Be sure not to lose the bellows follower [13] (attache component).
(2) Install the bo y to horizontal piping with the han le [12] facing upwar .
(3) Check the irection of the pro uct so that the flui flowing an the arrow marke on the bo y [1] are
in the same irection.
(4) Be sure to install pressure gauges, a strainer an a bypass line to the piping. (See “7.5 Piping
example”)
(5) The pressure of heating or cooling flui shoul be re uce with a re ucing valve if it excee s 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 Insta ation of therma bu b
(1) Although the thermal bulb [20] can be mounte in any posture, make sure that more than 3/4 of its
total length is in irect contact with the flui to be heate or coole .
(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 etection, it shoul be installe at a
point where the circulation is best.
* The thermal bulb is ma e of copper an can be easily bent if it bumps against something. Han le
with care.
