Energy sources on a typical meat grinder
Every machine is different: check your model's nameplate, wiring and the manufacturer's manual. This is where most meat grinders get their energy and how it is usually isolated.
| Energy | Typical magnitude | Isolating device | How to control it |
|---|---|---|---|
| Electrical | 208–480 V 3-phase (floor models) or 120 V cord and plug (table-top) | Wall or machine disconnect (or plug) | Switch OFF and lock and tag the disconnect, or unplug and fit a plug lockout cover. |
| Stored mechanical (motion, springs, tension) | Auger and knife coasting after stop | None — wait for complete stop | Wait until the auger has completely stopped before removing the head or reaching into the throat. |
Shutting it down
- Stop the grinder with the normal STOP control.
- Set any forward/reverse selector to OFF or neutral.
Releasing stored energy
- Confirm the auger is stationary.
- Remember the knife and plate stay sharp: handle them with cut-resistant gloves.
Verifying isolation
- Press START and try forward and reverse: the auger must not turn. Return controls to OFF.
Things people miss
- Never use hands to push product into the throat: use the stomper. This is a guarding rule, not part of lockout, but it is the most common cause of grinder injuries.
Turn this into your written procedure
Add your company, the machine ID, the voltage and where each disconnect and valve is. You get a machine-specific procedure that follows the structure of 29 CFR 1910.147(c)(4), with an approval block and printable DANGER tags.
Start with the meat grinder templateQuestions
Does a meat grinder need its own lockout procedure?
OSHA 29 CFR 1910.147(c)(4) requires documented procedures for the control of hazardous energy. A procedure is not required only when all eight conditions of the exception in (c)(4)(i) are met, for example a single energy source that can be readily identified and isolated. Most machines with more than one energy source need a written, machine-specific procedure.
Is unplugging enough?
For cord-and-plug equipment, the lockout standard does not apply when the equipment is unplugged and the plug is under the exclusive control of the employee doing the work (1910.147(a)(2)(iii)(A)). If the plug can be out of sight or reach, use a plug lockout cover with a personal lock.
Is the interlocked guard enough?
No. Guard interlocks and emergency stops are not energy isolating devices and do not replace lockout during servicing, cleaning or clearing jams.
General information, not legal advice. Verify every energy source on the actual machine and have the procedure approved by a qualified person.