Hypertherm PAC500 Water Injection Plasma Cutting System - Manual (Page 48)

PAC500 Instruction Manual 5-7
4
MAINTENANCE
Equipment Trouble Shooting
If the equipment fails to operate correctly, several steps may be taken to try to locate the fault. If these are
unsuccessful, an authorized factory serviceman should be contacted.
A. No power ON Light (WHITE) at Operator's Panel
1. No input power to control
2. Defective Switch (1SS, 3SS)
B. No Contactor Light (GREEN)
1. Water supply pump is not on.
2. Water supply solenoid not opening.
3. Water flowmeter valve closed.
4. Gas supply not on or pressure too low. (150 psig req'd.)
5. Console door interlock switches open.
6. Low water pressure
a. Replace filter at water supply.
b. Adjust water supply bypass valve to obtain 175 psig. (Refer to page 3-6 System Check-Out item no. 8)
C. Contacter Light (GREEN) ON, but arc does not strike.
1. No high frequency at torch.
High Frequency Check
a. Turn power supply disconnect switches OFF.
b. Turn control power OFF.
c. Place a jumper between terminals 1TB-18 and 1TB-19.
d. Place TEST/RUN Switch in TEST.
e. Turn control power ON.
f. Turn water flowmeter OFF.
g. Depress start button.
h. Set gas flowmeter at 70%.
i. Verify gas pressure input to console is 150 psig.