Frequently Asked Questions
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FIRGELLI support guide
The FAQ page is the fastest place to answer order, shipping, actuator selection, wiring, and troubleshooting questions. If you are planning a project, the best answer usually comes from combining the FAQ with the selector tools and the engineering calculators. That gives you the policy answer, the product answer, and the mechanical check before you contact support.
When writing to FIRGELLI support, include your order number if the question is about an existing order. For engineering questions, include stroke, force, voltage, actuator model, control method, mounting geometry, and photos or sketches of the mechanism. Clear project details make it much easier for the team to separate a wiring issue from a mechanical binding issue.
| Question type | Best next step | Details to have ready |
|---|---|---|
| Order, shipping, or account help | Contact FIRGELLI | Order number, shipping address, email used at checkout, and the exact item involved. |
| Choosing a linear actuator | Actuator selector tools | Required stroke, force, speed, voltage, duty cycle, environment, and mounting dimensions. |
| Wiring a switch, relay, or control box | Wiring Diagram Generator | Number of actuators, control type, voltage, current draw, and whether synchronization is required. |
| Force or mechanism calculations | Engineering Library | Pivot locations, load position, center of gravity, friction, angle, and safety factor. |
| Linear actuator sizing | Linear Actuator Calculator | Closed length, open length, force direction, bracket locations, and the worst-case load position. |
Before contacting support
Check whether the issue is mechanical, electrical, or product-selection related. Mechanical issues usually show up as binding, side load, noisy motion, bent brackets, or a load that moves easily by hand in one position but not another. Electrical issues usually show up as no motion, intermittent motion, reversed direction, tripped power supplies, weak batteries, or controllers that reset under load.
For actuator sizing questions, include the worst-case geometry instead of only the desired final position. FIRGELLI calculators are designed to help with the hardest point in the movement, because that is where an undersized actuator stalls. If the project uses two or more actuators, describe whether they move one panel together or operate separate loads.
Common checks
- Confirm the power supply voltage matches the actuator voltage.
- Confirm the supply can deliver the actuator current under load, not just at idle.
- Confirm the actuator is not being forced to take side load from a misaligned bracket.
- Confirm the stroke is long enough without bottoming out at either end.
- Confirm switches, relays, and control boxes are rated for the current of the actuator.
Useful engineering resources
FAQ checkpoints
How do I make an engineering question easier to answer?
Send dimensions, load, stroke, voltage, actuator model, mounting sketch, and any photos showing the full range of motion. Include what you expect to happen and what actually happens.
What should I check when an actuator will not move?
Check power supply voltage, current capacity, polarity, switch wiring, controller rating, limit switches, and whether the actuator moves when disconnected from the mechanism.
What makes a sizing question hard?
Hinges, levers, friction, and angled brackets can multiply the required force. Use the calculator that matches the mechanism instead of selecting from weight alone.