If you’ve exhausted all legal avenues and cannot obtain a manual, your safest course is to contract a Schindler-authorized service provider. The hourly rate is steep, but it’s far cheaper than a lawsuit or a fatality.
Specific procedures are provided to verify the integrity of the safety string, including emergency stop switches, gate switches, and pit switches. Schindler 330a Elevator Repair Manual
Check the cylinder bleed valve. Trapped air in the hydraulic cylinder is the primary cause of a "spongy" or jerky ride. If you’ve exhausted all legal avenues and cannot
Before opening the controller or entering the pit/hatch: including emergency stop switches
Check the optical or magnetic leveling switches mounted on top of the elevator car.
If you’re about to crack open a newly acquired Schindler 330a Elevator Repair Manual, verify you have: