Polar 66 keeps showing Hydraulic System Overheated (993)

[Gafana]

It still functions fine after clearing the error. The strange thing is that this sometimes shows immediately on the very first cut after powering it up on a cold morning so I don't suspect it's actually overheating. Any ideas what could be triggering this error?

 

[CHOCK]

Hi sir:
Here is what 993 means

This error message is issued when the thermal contact of the hydraulic motor
indicates an interruption during the release of the cut. Since Polar 66 is not fitted
with a safety bolt the thermal contact is used for generating the signal "safety bolt
(SB) activated". The SB safety cicuit serves to monitor the thermal contact of the
hydraulic motor.

check the following:

- Check loading of hydraulic motor.
- Check thermal contact WSK/M3.
- Check cabling.
- Check cutting circuit card.
- K1 on SAP 66- board (contact 11/12).
- Check 24-V power supply unit and replace it, if necessary

 

[Gafana]

Found a technician to come out and check the machine. You were spot on - It was the K1 relay on the SAP66 board. After replacing, the machine works flawlessly. Thanks!

 

[CHOCK]

ok, Sir Great, Good Job.

 

[Rodskie]

hello I have same error on my polar 66e hydraulic overheating 993. I just want to know which relay did you replaced on SAP66 board?

 

[CHOCK]

Hi Sir:

Please review this:
Check loading of hydraulic motor.
- Check thermal contact WSK/M3.
- Check cabling.
- Check cutting circuit card.
- K1 on SAP 66- board (contact 11/12).
- Check 24-V power supply unit and replace it, if necessary

Blessing

superchock@yandex.com