HVAC Drives & Controllers

Match the drive's rated kW and output current to the motor plate, never below it, and confirm the supply voltage: most industrial units are three phase 400 V. Fan and pump duty drives such as the Danfoss VLT HVAC series suit variable torque loads. Photograph your motor plate and send it to the seller with your enquiry.

Spin the impeller by hand and feel for bearing roughness, check the blades for dust build-up, erosion and cracked welds, and look at the mounting feet for fatigue. Confirm the motor plate matches your supply and ask what the fan previously extracted, since abrasive or corrosive duties shorten impeller life considerably.

Normally no: F-Gas rules require a certificated engineer to recover the charge before the unit is moved, and another to pressure test and recharge it on installation. Confirm the refrigerant type on the data plate, because units on phased-down gases cost more to service. Budget for certificated installation when comparing against new.

Match the dryer's rated flow at your working pressure to the compressor's output with headroom, since an undersized dryer passes wet air at peak demand. Refrigerated dryers deliver a pressure dew point of around +3 °C, which covers general workshop duty; desiccant dryers are needed only for lower ISO 8573-1 classes. Ask the seller for the rated flow figure.

Drives, portable air conditioners and smaller fans travel by pallet courier, often within days, which matters when a breakdown is holding production. Larger fans and condensing units need forklift loading and flatbed transport arranged with the seller. Confirm lead time and loading responsibilities in your first enquiry through the listing.