Kodak NovaJet 850 Training Manual page 51

If neutral-to-ground voltage, above 6 volts AC, is present then a serious
problem is present within the building's
electrical system. Often a mis-wired
connection or imbalanced phase load
can cause voltage/current to 'bleed' onto
the ground line (commonly referred to as
neutral-to-ground voltage) or a serious
ground fault exists within the building.
Immediately stop operations/service on
the printer. The printer is extremely
dangerous to work on in this condition
(with power applied) and is a personnel hazard. The problem, for the
symptoms described in section A, cannot be fully diagnosed and/or
corrected until the electrical system/receptacle is properly fixed. A
certified electrician will need to be contacted to upgrade the electrical
system with a properly grounded outlet or to correct a neutral-to-ground
voltage problem.
D. Power/Voltage Testers
1. In North America, basic receptacle testers are available for
testing standard 110 volt receptacle/wall outlets for proper
polarity and ground detection. These models are probably the
fastest and safest way in detecting improper wiring or the
presence of a ground fault.
The three LEDs help the electrician or technician identify:
•
Correct wiring
•
Hot/neutral reverse
•
Hot/ground reverse
•
Missing neutral
•
Missing ground
•
Missing hot.
2. In other continents a simple voltage 'screwdriver' may be used,
such as the inexpensive Stanley 3MM Voltage Tester. These tools
are used to determine the presence of phase on a hot line (L),
neutral (N) or even ground (G).
3. The universal test instrument is the voltmeter or multimeter which
may be used to measure dc, ac, resistance, etc.
NovaJet 800 Series Training Guide
51