The short answer
On an ADC washing machine, unusual noise most often comes back to a worn tub bearing, with debris in the drain pump close behind. ADC machines are commercial laundry equipment: they are wired for a commercial supply, controlled by an on-premises or vended controller, and run duty cycles no domestic machine sees. The first checks below are owner work, but the ranking here points at a repair that ends in a service call, so do them to confirm rather than to fix.
What you are seeing
- What this fault looks like, and which observations point somewhere else.
- a metallic clatter for the first moments of every spin and then silence
- a grinding that arrives only when the machine drains
- the machine walking across the floor during the spin
- a knocking that follows the drum round at low speed
- Not this fault: if the machine stops rather than finishing noisily, read the cycle page
- Not this fault: if there is water on the floor as well, deal with the leak first
Ranked causes on this platform
- Ranked for an ADC washing machine, which runs an on-premises or vended controller that reports a fault code and locks the machine out. No measured frequency exists for this address, so the order is platform judgement rather than a share.
- A worn tub bearing — Why: Bearing noise is a roar that rises with drum speed and is present in every spin regardless of the load, which is what separates it from balance.
- Debris in the drain pump — Why: The pump runs only during the drain, so a noise that arrives exactly then and nowhere else points here.
- Worn suspension or shock absorbers — Why: Damping wears gradually, so the machine becomes noisier over months rather than suddenly, and it knocks worst at the start of the spin.
- A machine that is not level or is on a flexing floor — Why: A spin puts enormous force into the floor, and a machine on an uneven or springy surface converts that into noise and movement.
- An unbalanced load — Why: A single heavy item in an otherwise light load throws the drum out of balance, and the machine makes every noise an owner fears without anything being wrong.
What to check, in order
- The order follows the ranking above: most likely and cheapest first, nothing needing a meter until everything else is eliminated.
- A worn tub bearing — Because: bearing noise is a roar that rises with drum speed and is present in every spin regardless of the load.
- Debris in the drain pump — Because: the pump runs only during the drain, so a noise that arrives exactly then and nowhere else points here.
- Worn suspension or shock absorbers — Because: damping wears gradually, so the machine becomes noisier over months rather than suddenly.
Checks you can safely do yourself
- Isolate the appliance before any panel comes off, and stop at the first step that explains the fault.
- Spin the empty drum by hand and listen for roughness; check for play at the drum rim. — Tools: nothing — Time estimate: a few minutes
- Isolate the machine, open the pump filter with a towel underneath and clear the chamber. — Tools: towels and gloves — Time estimate: allow half an hour
- Push the drum down by hand and let go; it should settle rather than bounce. — Tools: nothing — Time estimate: a few minutes
- Check all four feet make firm contact and lock the adjusters. — Tools: a level and a spanner — Time estimate: a quarter of an hour
- Stop condition: Stop there: the next step means metering live terminals or opening a sealed system.
Safety first
Safety
Unplug the appliance or switch off its breaker before removing any panel, because a capacitor can hold a charge after the power is off. Drain the machine before opening a filter or a pump, and expect more water than you think; keep the circuit off while you do it. Never defeat the door or lid interlock. It stops the drum before you can reach it, and a spinning drum does not stop for a hand. A machine full of water is extremely heavy — empty it before it is moved or tipped.
When to call a technician
Call a technician when the noise is a bearing roar that is present in every spin, when there is play at the drum, or when something is audible between the drum and the tub that cannot be reached. A bearing left to run takes the seal and the tub with it.
The fact bundle for this address was empty, so no warehouse figure appears. Every number on the page is a program safety constant, cited to its publisher. — Sources
General guidance- 1910.147 — The control of hazardous energy (lockout/tagout) — Occupational Safety and Health Administration, fetched 2026-09-06
Other faults documented for this brand and appliance. — Nearest pages of the same kind
What this page does not cover
This page is generalized across every ADC washing machine family and model number: no family fault list, no model parts list, and no measured figure from the program warehouse. Where a family- or model-specific page exists it goes deeper, and it should be preferred over this one.
Links: - [Common ADC Washer Problems](/blog/adc-washer-problems) - [ADC Washer: Does Not Clean or Dry](/blog/adc-washer-cleaning-performance) - [ADC Washer: Controls, Display or Error Code](/blog/adc-washer-control-fault)
Adjacent pages for what this one rules out. — Where to go next
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
