Thermal Dynamics A-08950, Руководство по обслуживанию

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CUTMASTER 12mm
SERVICE 5-10 Manual 0-5077
F. Pilot Arc Test
1. Activate or depress the torch switch (Activate
START signal) to establish a pilot arc and note
the following
• Gas solenoid opens
• Gas flows
• After two seconds the gas solenoid closes
and gas stops flowing momentarily, then gas
solenoid re-opens and gas resumes flowing
• DC LED comes ON.
• Pilot arc is established
2. Open the torch switch (Remote Pendant switch
or remove CNC start signal)
• Gas continues to flow
• DC LED goes OFF
After 20 second post flow time
• Gas solenoid closes
• Gas flow stops
This completes the Pilot Arc Test. If the above are all
correct then proceed to the next section "G, Main Arc
and Controls Test". If the unit does not function as stated
above, then note the symptom and proceed to Section
"5.08, Pilot Arc Problems".
G. Main Arc and Controls Test
Connect work Cable to the work piece, Close torch
switch (Pendant switch or activate CNC Start) to es-
tablish a pilot arc. Bring torch to within 1/8” – 3/8”
of the work piece to establish main cutting arc.
• Main Cutting Arc Establishes
• On Main PCB D59 turns OFF and D78 turns
ON
1. Clamp DC ammeter around the work cable. Out-
put will be 40 amps.
2. While cutting, adjust the CURRENT CONTROL
POTENTIOMETER from maximum setting to
minimum setting.
• Current adjusts from 40 amps down to 20
amps
3. Set the CURRENT CONTROL POTENTIOM-
ETER to maximum position.
• Current adjusts from 20 amps up to 40 amps
4. While cutting keep the torch switch closed, bring
the torch OFF the edge of the material.
• Cutting arc extinguishes
• Gas solenoid closes
• Gas flow stops momentarily then restarts
when solenoid opens
• Pilot arc ignites
5. Open the torch switch
• DC LED turns OFF
After 20 second post flow time
• Gas solenoid closes
• Gas flow stops
6. Set the FUNCTION CONTROL SWITCH to
RAPID AUTO RESTART mode.
7. Close torch switch (Pendant switch or activate
CNC Start) to establish a pilot arc. Bring torch to
within 1/8” – 3/8” of the work piece to establish
main cutting arc.
8. While cutting keep the torch switch closed and
bring the torch OFF the edge of the material.
• Pilot Arc re-ignites immediately
9. Open the torch switch
• DC LED turns OFF
After 20 second post flow time
• Gas solenoid closes
• Gas flow stops
10. Set the FUNCTION CONTROL SWITCH to
LATCH mode
11. Start a cut, and release the torch switch
• Main cutting arc will remain ON until the torch
is lifted away from the plate approximately ¾”
(19 mm) or until the torch is brought OFF the
edge of the metal
Once the arc has extinguished
• DC LED turns OFF
After 20 second post flow time
• Gas solenoid closes
• Gas flow stops
This completes the Main Arc and Controls Test. If the
above are all correct then proceed to the next section
"H CNC Interface Test." If the unit does not function as
stated above, then note the symptom and proceed to
Section "5.09, Main Arc and Controls Problems".