ESAB ESP-150 - Page 52

52
6. Release torch switch.
a. MC opens and the cutting arc shuts o.
b. Gases continue to ow (postow) for approximately another 10 seconds at which time the PGSV and CGSV
will close, opening PCPS and CGPS.
NOTE: Anewcuttingcyclecanbestartedanytimeduringthepostow.Assoonasthetorchswitchisdepressed,the
remainingpostowtimewillcancelandthenormalpreowtimewillstart.
7. Control circuit will not energize or can deenergize during a cutting cycle when:
a. PGPS or CGPS is open due to insucient gas pressure (at least 15 psi required).
b. Thermal Switches (TS) are open due to overheating of unit. TS should open at 180° C
(356° F).
8. Place ROS to “OFF” position.
a. Control circuit deenergizes.
b. Fan motor (FM) deenergizes.
c. Low Gas light on status board will go out.
9. Open primary disconnect switch.
a. Input power unit shut o.
SECTION 5 MAINTENANCE