Product Overview
The LiftMaster K22-120 is a 120V/60Hz brake solenoid replacement kit used on select LiftMaster Logic 5.0 commercial door operators. In a braked operator, the solenoid is part of the mechanism that releases the brake at the proper time and allows the brake to hold the door when the operator stops. A weak, failed, or incorrect solenoid can create brake release problems, humming, heat, and unnecessary motor strain.
This part belongs to the Logic 5.0 commercial operator service family and is also known as 22-120. It should be matched by the exact operator wiring and parts diagram. Logic 5.0 operators can be built in multiple voltage and phase configurations, and brake solenoid kits are not interchangeable just because they look similar. Confirm the original part number and the operator electrical configuration before ordering.
Compatible With / Common Applications
- Select LiftMaster Logic 5.0 commercial door operators that list K22-120 or 22-120
- Commonly associated with LiftMaster Logic 5.0 T, APT, H, J, HJ, GH, GT, SD, and GSD style service paths when the diagram calls for a 120V/60Hz brake solenoid
- Commercial door operator brake systems designed for a 120V/60Hz solenoid kit
- Use on Logic 5.0 units only when the replacement parts list identifies K22-120
- Not a substitute for K22-36899, 204B0118, 22-460-1, K22-575-1, or other voltage-specific brake solenoids
Features & Specifications
| Feature / Specification | Details |
|---|
| Manufacturer | LiftMaster |
| Product Type | Brake solenoid replacement kit |
| Part Number | K22-120 |
| Voltage | 120V |
| Frequency | 60Hz |
| Application | Logic 5.0 commercial door operator brake system |
| Compatible Operator Type | Select LiftMaster Logic 5.0 commercial door operators |
| Notes | Match voltage, frequency, and parts diagram |
Also Known As / Related Part Numbers
- 22-120
- LIF-K22-120
- K22-120 brake solenoid
- 120V/60Hz brake solenoid
- Logic 5.0 brake solenoid kit
- LiftMaster commercial door brake solenoid
Technician Note
A brake solenoid should not be replaced until the technician verifies the operator supply voltage and confirms the brake coil is the correct failure point. A dragging brake or bad control output can look like a solenoid problem.
Before Ordering
- Confirm the operator is a compatible Logic 5.0 commercial door operator
- Verify K22-120 or 22-120 in the parts diagram
- Confirm 120V/60Hz brake circuit requirements
- Inspect wiring, brake linkage, and brake wear
- Do not substitute with another voltage kit
Professional Advisory
K22-120 service involves energized commercial door operator circuits and moving brake parts. Use a qualified commercial door technician and follow proper lockout procedures.
Product Questions & Answers
What is K22-120 used for?
K22-120 is a 120V/60Hz brake solenoid replacement kit for select LiftMaster Logic 5.0 commercial door operators.
What is the alternate number for K22-120?
The common related number is 22-120.
Is K22-120 a universal Logic 5 brake part?
No. It fits only compatible Logic 5.0 operators that call for this 120V/60Hz brake solenoid kit.
Can a bad brake solenoid stop the door from moving?
Yes. If the brake does not release, the operator may hum, strain, or fail to move correctly, but wiring and brake mechanics should also be checked.
Can K22-120 replace a 575V solenoid?
No. It is a 120V/60Hz kit and must not be used in place of a 575V, 460V, or other voltage solenoid.
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