MAINTENANCE
8-18 HySpeed HT2000 Instruction Manual
19
Problem Possible Causes / Solutions
7. COOLANT FLOW LED
illuminated:
7.1. Coolant flow restricted.
This LED will extinguish when flowswitch (FS1) senses a
coolant flow of at least 0.5 gpm (1.9 l/m) to the torch. FS1 is
a normally open switch that closes when a flow greater than
0.5 gpm is sensed. See Coolant Flow Test Procedure later
in this section to troubleshoot coolant flow problems.
Note: Coolant flow LED illuminates when line disconnect
switch is turned ON because coolant reservoir pump M2 is
not activated until the power supply POWER ON (PB1) is
pressed.
• Using the wiring diagrams, check pins, wires and
connections from TS2 to PCB1.
Repair and/or replace defective component(s), if necessary.
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