9
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EPDT-258b
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5.5 Adjustment Procedures
Incorrect adjustment may cause hunting, scale problems or water hammer, and may heavily damage the
main parts of the product. Be sure to follow the steps below.
(1) Close the stop valves at the front and the rear 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.
While blowing, be careful not to apply fluid of higher temperature than the max. allowable temperature of
the product.
(2) Turn the handle and move the indicator to the desired temperature position on the scale. To raise the
temperature, turn the handle counterclockwise (when seen from the top). To lower the temperature, turn it
clockwise (when seen from the top). Reading scale is only for reference, so please adjust the temperature
by using a thermometer.
(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.
5.6 Example of piping