Air Make-Up Units for Switchgear Cabinet Finishing
Switchgear cabinet finishing areas can move a large amount of air through powder booths, paint booths, ovens, and exhaust systems. Double D Mechanical installs, relocates, and services air make-up units and related duct, heater, controls, and utility connections that help coating areas operate with steadier pressure and airflow.
Discuss your installationAir Replacement for Coating Operations
When booth exhaust or oven exhaust removes air from the building, replacement air has to come from somewhere. Without planned make-up air, doors can pull hard, booth capture can change, and nearby processes may be affected. For cabinet coating, the replacement air strategy should consider powder application, liquid coating areas, cure ovens, prep spaces, and the movement of large enclosures through the department.
Unit Placement and Duct Routing
An air make-up unit needs a practical location for intake air, discharge ductwork, service access, utility connections, and structural support. Roof-mounted, mezzanine, or floor-level arrangements each create different coordination issues. Double D Mechanical reviews route constraints such as roof framing, sprinkler lines, electrical trays, crane paths, and wall penetrations before installation work begins.
- Identify the coating and oven equipment that removes air from the space.
- Confirm discharge locations that support booth balance without creating drafts on parts.
- Reserve service clearance for filters, belts, motors, burners, controls, and dampers.
Heat, Controls, and Production Comfort
Tempered replacement air can help the finishing area stay more predictable during seasonal changes. Heating method, control sequence, discharge temperature, and interlocks with exhaust equipment should be reviewed with the facility team. The goal is a system that supports the coating process while still allowing maintenance staff to reach filters, controls, and combustion components.
Site Details to Gather Early
Useful information includes existing exhaust fan data, booth and oven drawings, building pressure complaints, utility availability, roof access, structural limits, and preferred equipment locations. Photos of the proposed intake and discharge routes help identify conflicts before crews and equipment arrive.
Frequently asked questions
Why does a cabinet coating area need make-up air?
Booths and ovens remove air from the building. A make-up air unit replaces that air in a controlled way, which can help booth capture, oven draft, and general room pressure.
Can one unit serve multiple finishing systems?
It may be possible when the airflow, controls, duct routing, and operating sequence are planned for the connected equipment. The unit should be evaluated against the actual exhaust demand.
Where should replacement air be introduced?
Discharge locations should support the booth and oven area without blowing directly on coated parts, operators, powder clouds, or open booth faces.
What utilities are commonly needed?
The project may involve electrical power, controls, gas for heated units, roof supports, intake openings, discharge duct, and interlocks with exhaust equipment.
What should be checked during a replacement or relocation?
Fan capacity, heat source, control condition, curb or support condition, duct layout, filter access, and whether the new location can serve the finishing area effectively.