Hypertherm HPR130

MAINTENANCE
HPR130 Manual Gas Instruction Manual 5-35
6
TP 206
TP 210
Testing the flow switch
1. Turn ON the power.
2. Measure the VDC between TP210 and TP206.
TP206 is common on PCB3. TP210 provides a filtered, 67% scaled, voltage from the flow switch. 0.45 VDC (0.67
VDC at the flow switch) equals 2.3 lpm (0.6 gpm). If the TP210 voltage reading is below 0.45 VDC and the flow is
equal to or above 3.0 lpm (1 gpm), replace the flow switch.