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Temperature Regulator – Annex
CAUTION
Piping example
· OB-30, OB-30U (for heating)
Pressure gauge
Stop
valve
Steam
Condensate
Adjustment
Taking a wrong adjusting procedure may cause
hunting, scale problems or water hammer, and can
heavily damage the main parts of the product. Be
sure to follow the procedure below.
1. Close the stop valves at the inlet and outlet
sides of the product.
Open the bypass stop valve and blow fluid through
the bypass line with enough time. After discharging,
be sure to close the bypass stop valve.
2. Turn the handle and move the indicator to the
desired temperature position on the scale. To
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raise the temperature, turn the handle clockwise
(to direction of the "H" position). To lower
the temperature, turn it counterclockwise (to
direction of the "L" position).
3. Slowly open the inlet stop valve to its full open
position, and then, open the outlet stop valve
little by little to its full open position.
4. Adjust the handle till the desired temperature is
obtained while watching the thermometer with
enough time.
5. Scale reading and set temperature
The tables show the set temperature per scale
reading as a guide. Because the temperature
varies slightly according to the conditions of use,
adjust the handle till the desired temperature is
obtained.
6. Please note that too much frequent adjustment
by handle can lead damage on the internal parts.
Completely discharge the internal pressure from the valves before disassembly.
-35
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Please refer to the manual attached to the product for procedures for installation and operation.
Safety relief valve
Thermometer
Capillary tube
Thermal bulb
Strainer
Heating coil
Bypass stop valve
Stop
Trap
valve
Strainer
· OB-31, OB-31U (for cooling)
Hot water
Storage tank
Air
Water
Water
Scale
reading
0-35°C
0
-10°C
1
2
20°C
3
31°C
4
42°C
Scale
OB-31, OB-31U (for cooling)
reading
0-35°C
0
1
-14°C
2
3
32°C
4
55°C
www.yoshitake.jp
OB-31
Temperature regulator
Capillary tube
Stop
Strainer
valve
Thermal
bulb
Bypass stop valve
Air
OB-30, OB-30U (for heating)
25-70°C
40-100°C 60-130°C 70-150°C
14°C
28°C
5°C
30°C
47°C
46°C
66°C
62°C
86°C
78°C
106°C
25-70°C
40-100°C
−
−
−
11°C
23°C
9°C
38°C
55°C
65°C
94°C
98°C
141°C
OB-30 series
Stop valve
Water
OB-30 series
−
−
58°C
67°C
81°C
91°C
105°C
119°C
132°C
162°C
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