User Manual
Chapter 2: Installation 
Product Service 1-800-522-7658 
7
Electrical 
Open Combination Macro-Kjeldahl Systems have been wired at the factory per 
the product model number ordered by the customer. Labconco model numbers 
ending in 01 are 115 volts. Model number ending in 02 are 230 volts. Models 
ending in 03 are 230 volt, three phase. Amperage requirements vary depending on 
the number of heaters per the digestion rack. The tables below provide the voltage 
and amperage electrical requirements for the Open Combination Macro-Kjeldahl 
Systems. A qualified electrician will need to connect the facility electrical supply 
to the main breaker box with its individual circuit breakers. The following basic 
steps should be followed: 
1.  Remove circuit breaker box cover panel. 
2.  Main line lead connection terminals are identified and connections 
must be made accordingly. 
3.  Line leads to the apparatus must conform to local electrical codes. 
4.  Provide an electrical ground to the apparatus per code. 
5.  Before applying power to apparatus, check the electrical panel and 
breakers for loose connections. 
6.  Reinstall box cover panel. 
7.  Power the breaker box and reset breakers to check circuits in the 
apparatus. 
8.  All electrical wiring and connections must conform to local codes and 
should be performed by qualified electricians. An earth ground must 
be provided. 
Figure 2-2 










