Sierra Monitor Corporation HRG015-W - Manual (Page 43)

HRX-OM-J049-A
Chapter 4 Startup and Shutdown
HRG010-W HRG015-W 4.4 Check at startup
1st edition : Aug. 2006
Rev. A: May. 2007
4-5
4.4 Check at startup
Check the following items at startup of the unit.
z No leak from circulating fluid piping
z No circulating fluid flowing out of the overflow outlet and tank drain port
z Circulating fluid pressure within the specified range
„ Bypass valve
Normally, the bypass valve is fully opened. If the unit is started up with the valve
fully closed, circulating fluid supply may reach abnormal high pressure depending
on external piping conditions. Be sure to keep the bypass valve fully opened for
initial startup of the unit installed.
Adjust the bypass valve to obtain required pressure and flow rate by checking on
the external pressure gauge and flow meter that can be prepared by customer or
mounted on external piping.
Fig. 4-7 Bypass Valve
When any abnormality is found, press the [OFF] switch immediately to
stop the unit and turn the main power supply off.
Bypass valve
Right