PR-2000 Product Support

 

 

NOTE: It is suggested that only qualified technicians use these repair guidelines, ignoring to do so could result in a void of your warranty. This information is to be used as a guideline only, and cannot be gauranteed to solve your specific repair issue.


 


 
1. The PR-2000 shows no display screen & the phase lamps DO NOT illuminate.
 

- Check that the wall & cabinet breakers are on.

- Check house power level (all phases) at panel, breaker and outlet.
- Check wires in plug and supply cable.
- Check breaker and cassette terminal strip.
- Check harness to PCB and 18VDC.
- Check ribbon cable.


 
2. The PR-2000 shows no display screen & the phase lamps DO illuminate.
 

- Check that the display screen has power & the phase lamps are on.

- Check accidental press of gun trigger.
- Check software flash card insertion, version and integrity.
- Check display brightness adjustment under the settings menu.



 
3. The PR-2000 makes a weak weld.
 

- Check gun setup: squeeze pressure, shank & arm, tip condition & alignment.
- Check metal prep & condition as well as thickness.
- Check Weld settings and Power profile.
- Check supply voltage level for voltage drop.


 
4. Soft-start delay relay not functioning and no weld from either gun.
 


- Confirm click on PCB during 5 second soft-start delay period.
- Confirm AC Input voltage and Display.
- Check for IGBT buss voltage on PCB indicator and system wiring.
- Inspect and check Soft Start Resistor Board.
- Jumper the relay harness (temporary) to attempt System fix.  (May require cassette swap.)

 


 

5. Double-sided gun does not weld, single sided does.

 


- Check gun cable connections and trigger (input) loop continuity (24vdc).
- Check pressure & air flow to / through air lines.  Disconnect lines at Cabinet & press triggers.
- Check solenoid output integrity (24vdc).
- Check two-way Gun Solenoid.

 


 

6. Weld error message issued & no weld from either gun.
 

 

- Confirm supply voltage to welder.  Bridge in high current section generates 300VDC for IGBTs.
- Confirm IGBT buss voltage indicators. Soft Start is normally ok. 
- Confirm PCB 15VDC and IGBT driver integrity (inspect bottom).
- Check stud diode array on weld transformer.  This is a simple at-gun measurement.
- Check IGBTs.

 


 

7. Pop sound reported in cabinet, no weld either gun & soft start relay ok.
 

- Inspect systems to locate pop source following input voltage check.
- Check for loose wiring connections, especially high current paths.
- Check for problem with Softstart or IGBT systems.

 


 

8. Temperature error message issued or no air cooling.
 

 

- Check sensor Display readout (100 C =failure / 30+/-ok)  Also see ambient / outdoor temperature.
- Check sensor input (25000 +/- ohms).  (Sensor failure or temporary overheat will disable welder.)
- Check 15VDC and PCB.
- Check solenoid output and wiring.
- Check 24VDC and PCB.

 


 

9. Cabinet circuit breaker trips.
 

- Check breaker and high current wiring.
- Check for loose or broken connection.
- Check Softstart, bridge, IGBT and diode circuits.


 

10. Facility (wall) breaker trips.
 

- Check outlet & plug.
- Check cabinet breaker and high current wiring.




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