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Installation
310554V 15
Connecting the Control Assembly to a Power Source (continued)
Checking Resistance Between
the Control Assembly and the
True Earth Ground
Have a qualified electrician check the resistance
between each system component and the true earth
ground. The resistance must be less than 0.25 ohms. If
the resistance is greater than 0.25 ohms, a different
ground site may be required. Do not operate the Preci-
sionSwirl module until the problem is corrected.
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L1
L2/N
PE/GND
Power Terminals
FIRE, EXPLOSION, AND ELECTRIC SHOCK
HAZARD
To reduce the risk of fire, explosion, or electric shock,
the resistance between the supply unit components
and true earth ground must be less than 0.25 ohms.