Setup
3A0420ZAF 25
Systems with Explosion-Proof
Heaters
(Hazardous location systems only)
When explosion-proof heaters are used, ensure the
wiring, wiring connections, switches, and electrical
distribution panel all meet flame-proof (explosion-proof)
requirements.
Refer to the Viscon HP heater manual for electrical
connection instructions and guidelines in hazardous
locations.
Motor Position
The motor position must be set for the volume mix ratio
of the system.
NOTE: Changing the motor position does not change
the mix ratio.
Check Motor Position
1. Verify that the correct pumps are mounted for your
mix ratio by volume. See Volume Mix Ratio charts
on pages 11-12.
2. Verify that the motor position is adjusted correctly
for that mix ratio (refer to the image above). If not,
follow the Change Motor Position procedure on
page 26.
Improperly installed or connected equipment will
create a hazardous condition and cause fire,
explosion, or electric shock. Follow local regulations.
If your system is rated for hazardous locations, and
you have explosion-proof heaters, you must have a
qualified electrician connect the heater wiring. Make
sure the wiring and installation comply with local
electrical codes for hazardous locations.
indicator line
indicator line
Air Motor shown
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