Sub BT oil change

[Blakey111]

I'm not 100% on this one, as it sounds like the motor may be having difficult shifting the gate. If the motor hasn't had a full oil change then this could possibly remedy the problem, but I don't come across this very often at all. Have you released the pressure off using the manual release and see whether the gates can be moved manually to free up the mechanisms? Forces generally need to be higher with Hydraulic kits anyway (and at 100% on 230V Hydraulic kits), and in colder conditions need increasing top operate successfully. However if you are still having problems when the forces are at their max, then this would indicate an underlying issue which needs fixing.
Do you know if the oil has been topped up recently? There are two variants of oil for the 230V SUB's and the 24V SUB's. The 24V SUB BT oil is winter oil (AW15, 2ltr), so if your motors have been topped up with the incorrect grade this could be the problem.
Hope this helps!
Any queries, please let us know.
Cheers
Dave