LiftMaster XF208VAC7 208V Transformer Kit — MAXUM 700 Operators

The LiftMaster XF208VAC7 is the 208V step-down transformer kit identified for supported MAXUM 700 commercial-door operator configurations. Manufacturer wiring information describes a 208VAC-to-120VAC supply arrangement and requires the transformer to be selected for the operator size. Match the complete model, voltage version and current kit instructions before purchase. This is an external AC supply-conversion accessory, separate from the operator’s DC battery-backup system; it does not increase door capacity or establish compatibility with every operator that carries the MAXUM name.

Compatibility — Models, Versions and Exclusions

Match Supply Voltage, Operator Size and Manual Revision

Have the electrician identify the incoming supply and the operator’s actual voltage configuration before selecting the kit. Check the full model designation, not just the general product family or cabinet appearance. Transformer sizing and the intended output arrangement must agree with the manufacturer’s instructions. A similar transformer with the same input label is not automatically an approved substitute.

Use the current accessory table together with the model-specific wiring diagram and the instructions supplied with the kit. Preserve the specified grounding, protective components, mounting and conductor routing. Do not transfer connections from a 480V factory-wired configuration or another operator size. After electrical work, complete normal operating, limit and protection-device tests before returning the commercial door to service.

Specifications and Product Identification

Before Ordering

• Record the full MAXUM 700 model and supply version.
• Verify available 208VAC input and the required 120VAC arrangement.
• Confirm XF208VAC7 in the current accessory and wiring documentation.
• Plan mounting, protection and site wiring with qualified electrical personnel.

Package Contents and Separate Requirements

This offer identifies the XF208VAC7 transformer kit. Confirm the current carton for enclosure, connection and mounting pieces, and identify any separately required electrical materials from the supplied instructions. An operator, branch circuit, battery-backup kit, control board and safety sensors are not promised as included. Matching input and output labels alone does not make the kit a complete approved conversion for unspecified equipment.

Safety Warnings — Read Before Installation or Service

• WARNING: Transformer installation exposes hazardous AC voltage. Use qualified electrical and commercial-door personnel.
• Disconnect and secure all applicable power, including backup batteries where required, before installation or wiring changes.
• Follow the exact kit and operator diagrams. Do not improvise supply connections or use an unverified transformer size.
• Restore covers and test normal operation, limits, reversal and all required protection devices before returning the door to service.

Related Products and Important Differences

• DC7AH MAXUM battery-backup kit — a separate DC backup option for approved models; not a replacement for this AC transformer.
• TDC12X1BMC MAXUM trolley operator — a different 1200-size operator; its transformer requirements must be checked separately.

Frequently Asked Questions

Does it produce 24VDC for batteries?

No. The documented conversion is 208VAC to 120VAC.

Can I use it for a 1200 or 2200 operator?

Use the kit specified for that operator size; this reference is identified for 700 configurations.

Does it increase the door weight rating?

No. Supply conversion does not change the operator’s mechanical capacity.

Can it be selected from supply voltage alone?

No. The full operator model, electrical version and current instructions must also match.

Need Help Confirming the Right Product?

Contact Garage-DoorParts.com before ordering. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.