HT4001 Instruction Manual
7-21
MAINTENANCE
3.
COOLING WATER illuminated:
4.
PLASMA GAS illuminated:
-
RHF D O O R
-
TRANSFORMER
-
COOLING WATER
-
PLASMA GAS
STATUS
Problem
Possible Causes and Solutions
3.1.
Coolant flow too slow.
This LED will extinguish when flowswitch FS1 in the RHF
console closes after sensing a coolant flow of at least 1.25
gpm (4.7 l/m).
•
Verify that the water chiller is plugged in and is ON.
•
Verify that the water supply is connected to the water
chiller and is ON.
•
Verify that there are no leaks from tlhe water chiller to
the RHF console to the torch.
3.2.
Flow switch FS1 in RHF console not functioning.
•
Check cable, and wiring from REC3 of PCB1 to
pins 7&8 of RHF console cable connector for continuity.
•
If wiring is OK and inlet coolant flow is OK, FS1 may
need to be replaced.
Repair and/or replace defective component(s), if necessary.
4.1.
Plasma gas pressure too low.
This LED will extinguish when PS1 and PS2 (in O
2
mode) or
PS1 (in N
2
mode) close after sensing plasma gas pressure of
at least 80 psi (5.5 bar).
•
Verify that incoming plasma gas pressure is 120 psi (8.2
bar) for O
2
and 150 psi (10.3 bar) for N
2
.
•
Check for gas leaks or loose gas connections if
pressure is inadequate.
4.2.
PS1 and/or PS2 in gas console not functioning.
•
Check wiring, cables and connectors from REC3 of
PCB1 to pins 14&15 of gas console cable receptacle.
If wiring is OK, and inlet gas pressure is OK, PS1
and/or PS2 may need to be replaced.
Repair and/or replace defective component(s), if necessary.
4-99
-
RHF D O O R
-
TRANSFORMER
-
COOLING WATER
-
PLASMA GAS
STATUS
Содержание HT4001
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