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OB-1 to 6
∙ Installation of body
1. Install the temperature regulator vertically to horizontal piping with the frame facing upward.
2. Be sure to install the temperature regulator on the place below the preset temperature. If the ambient
temperature exceeds the preset temperature, it leads to the product malfunction.
3. Be sure to install pressure gauge, strainer and bypass line to the piping (see Fig. 1 below).
4. The pressure of heating or cooling fluid should be reduced with a reducing valve if it exceeds the maximum
pressure.
5. Do not apply an excessive load, torque or vibration to the product during plumbing.
6. Completely discharge the fluid inside the piping and close the stop valves installed at before and after the
temperature regulator before stopping operation of the product for an extended period.
7. Be sure to remove foreign matter from the piping through the bypass line at the ventilation before opening
the temperature regulator circuit.
Fig.1 Piping example
<For liquid>
Pressure
Temperature
gauge
regulator
Strainer
Steam
Bypass valve
Condensate
∙ Installation of thermal bulb
1. Avoid bending the capillary tube at a sharp angle,
twisting or entangling.
2. 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.
3. Install the thermometer close to the thermal bulb.
4. Install the thermal bulb on the place where
temperature detection is needed.
5. When plumbing, make sure that the connecting
part of the thermal bulb is faced downward and
(T) position at the flange or the joint nut section is
located at uppermost part (see Fig. 2).
6. Remove the companion flange bolts from
attaching part of the thermal bulb. Then screw
the flange and insert the bulb to align holes of
companion flange, tighten the bolts uniformly. Do
not twist conduit pipe (except for the OB-5 ∙ 6).
Safety relief valve
Hot water
Thermometer
Capillary tube
Thermal bulb
Storage tank
Heating coil
Water
Strainer
Trap
www.yoshitake.jp
Temperature Regulator
<For air>
Capillary tube
Temperature
Pressure
regulator
gauge
Pressure
gauge
Strainer
Steam
Bypass valve
Strainer
Trap
Fig. 2 Mounting postures of thermal bulb
Step
3
Thermometer
Thermal bulb (for air)
Heater
O.K.
Upward
Horizontal line
Downward
WRONG
-10
13
13
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