1. Problem Description
The customer reported that, after the machine had been running a job for a period of time, the main wave pump slowed down and could not be commanded above approximately 435 RPM. Changing programs and adjusting solder pot settings did not change the condition.
2. Troubleshooting Performed by Customer
Removed the solder pot for maintenance to determine whether dross was restricting the pump.
Cleaned the pot and refilled it with solder; the speed limitation remained.
Removed the pump drive belt and manually rotated the pump shaft. The shaft was reported to turn freely, with no bearing drag detected.
Ran the pump with the belt removed; the pump still would not exceed approximately 435 RPM.
Shut the machine down completely and restarted it; the condition remained.
3. Recommended Checks
Technical Support recommended checking whether Standby mode was enabled. If Standby was enabled, the customer was advised to disable it and see whether the pump speed limitation was corrected. Support also noted that a malfunctioning input sensor could be a possible cause.
Important: The available service ticket does not document whether Standby mode was disabled, whether an input sensor was found to be faulty, or whether either action resolved the issue. These are troubleshooting directions from the ticket, not a confirmed repair.
4. Recommended Troubleshooting Sequence
Check the machine's Standby function/status.
If Standby is enabled, disable it and retest the main wave pump speed.
If the pump remains limited to approximately 435 RPM, investigate the relevant input sensor and its signal/status in accordance with the machine's service documentation.
Record the result of each check and verify whether the pump can reach its commanded operating speed.
5. Conclusion
The issue was resolved by disabling the stand by mode.