A pneumatic motor will not start with correct pressure at the inlet port and exhaust at the outlet port. What test indicates the issue is with the actuator?

When troubleshooting a pneumatic motor that does not start despite having the correct pressure at the inlet and exhaust ports, disconnecting the load and checking if the motor starts is an effective method to isolate the issue with the actuator.

By disconnecting the load, you remove any potential mechanical binding or excessive friction that might prevent the motor from starting. If the motor does start when the load is disconnected, this indicates that the actuator or the load itself is causing the issue. In contrast, if the motor still does not start, it may point to a problem within the motor itself or its power supply, rather than the actuator.

This approach is practical because it focuses directly on identifying whether the actuator (the connected load) is impacting the motor's ability to function properly. In contrast, checking for voltage, inspecting the motor for damage, or measuring current draw provides insights about the motor's operational condition, but they may not directly indicate whether the actuator is the source of the problem.