Overview
Run capacitor, 10 µF 450 V, for the Dry Air Technology Tempest air mover motor. Part number AF-00E-PNBN0329.
Check the capacitor before you replace a motor
This is the single most useful thing on this page. A single-phase motor that hums but will not start, or that starts only if you help the fan by hand, is almost always a failed run capacitor — not a failed motor.
Symptoms worth checking a capacitor for:
- Motor hums, fan does not turn
- Fan starts only after a nudge — stop and unplug the machine rather than keep doing this
- Motor runs hot, or noticeably down on airflow
- Machine trips a breaker on start-up
Razorback's troubleshooting table for this class of machine names exactly this: fan does not turn — capacitor wire has broken or come loose, capacitor has failed. Check the wire before you check the capacitor; it is free.
A bulged, split or weeping capacitor is finished on sight. One that looks perfect can still be well below its marked capacitance — test it, do not judge it by appearance.
Important — match the value to the motor, not to the machine
Razorback's own parts list for the MaxxAir AAM Pro lists the capacitor as "refer to motor name plate" rather than giving a part number. That is the correct instruction and it applies here too.
Read the µF and voltage off the capacitor you are removing, or off the motor's data plate, before you order. The same model of air mover has been built with more than one motor, and the capacitor follows the motor.
Do not substitute on value, and do not fit a lower voltage rating. A capacitor of the wrong value will run the motor inefficiently and hot, which shortens the life of the expensive part.
Safety
Capacitors hold a charge after the machine is unplugged. Discharge it safely before handling. This is not optional.
Photograph the terminal connections before disconnecting anything.
Related Dry Air parts
- Tempest Primary Inlet Grill (CF-00C-P4N20552)
- Tempest Snout Grill (CF-00C-P4N20554)
- Single-Throw Rocker Switch (GN-00E-P3B10218)
Frequently asked questions
What is the value?
10 µF, 450 V.
Which machine is it for?
The Dry Air Technology Tempest air mover motor.
Can I fit a different µF value?
No. Match what is on the motor data plate.
Can I fit a higher voltage rating?
A higher voltage rating is generally acceptable where the capacitor physically fits; a lower one is not. Ask us if you are unsure rather than guessing on a motor circuit.
How do I test one?
With a multimeter on the capacitance range, after discharging it. Well below the marked value means replace.
Read the value off your existing capacitor or the motor plate and send it to us — we will confirm the right one before you order.
