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Sterilizer Manufacturer:
Market Forge
Model of Sterilizer:
Market Forge STM-EL
Problem Title:
Problem Description:
We have acquired a second hand Market Forge autoclave, Model STM-EL (208/240V) and want to electrically install it. We have 4 black wires and 1 green coming out of the unit. We plan to install it into a three-phase circuit breaker. One of the 4 black wires is the return that needs to go to the bus in the breaker box, but I donít know which. Could you send me a wiring diagram for this unit possibly via fax?

Thank you for your assistance,

Walter Callen
Biomatrica Corp
FAX 858-678-0597


1. Yes. the market forge sterilizer can work on both 3 wires or 4 wires , i.e. Delta or Star diagram. It is very easy to convert to each other.

Normally on the backside of the power connect cover, it has a wiring diagram, which shows you how to set the machine work on 3 wires or 4 wires. Remember you should be very carefully, following the Numbered wires (there are number on each wire).

You need a certificated electric technician to do it. If you need more help you can get a technical manual from the following site:

The technical information is just to help sterilizer users as reference to do their trouble shooting.
no guarranty implied. For each specific technical help to do with sterilizers
or autoclaves, go to ... or call 1-800-801-9934 Contact Us