American Dryer Corp. AD-400 - Manual (Page 17)

Supplying the wrong voltage or low voltage to the dryer can result in poor performance or in serious
damage to the dryer components. Fused disconnect switches must be provided near the dryer to supply
power.
NOTES:
1. The AD-400 approximate load is 39 HP.
2. Fuse ratings are for dual-element, time-delay, current-limiting type.
3. Circuit breakers are thermal-magnetic and 3-pole type.
4. Dryer must be grounded for proper operation.
5. The AD-400 safety sprinkler system load is approximately 200VA
IMPORTANT: Installation of this diyer should be performed by qualified and trained
professionals in accordance with all applicable local and state electric codes and ordinances. In
the absence of these codes, installation must conform to the American National Standard:
National Electric Code ANSI/NFPA 70, latest edition.
I
CAUTION: Use only copper cable for electric hookup. Use of aluminum cable will void your
warranty.
2. Compressed air supply
A minimum of 20 cubic feet per hour of 80 psi compressed air must be supplied to the dryer.
The compressed air supply must be connected into the 3/8-inch FPT fitting in the dryer's
filter/lubricator/regulator which is located in the bottom rear comer of the lower bumer/heater section.
The filter bulb should be emptied monthly, and the oiler bulb should be refilled monthly with an
SAE 150-200 SSU misting oil, such as Mobil DTE lightweight oil or equivalent. Do not use synthetic oils.
3. Gas Piping (gas-heated dryers only)
The gas connection to the dryer is made into the 1-1/2-inch FPT shut-off valve located in the bottom front
comer of the lower bumer/heater section.
The gas pressure supplied to the dryer must be between 7 inches and 13 inches water column for natural
gas and between 10 inches and 11 inches water column for L.P. gas.
If the plant's gas pressure is higher than these values, then an external pressure regulator must be
installed prior to the dryer to reduce the gas pressure to within the appropriate range.
The dryer must be connected to either natural or L.P. gas as indicated on the dryer data label located on
the inner right wall of the electric cabinet door. If your gas supply does not match the type of gas for
which the dryer was built, contact your distributor or the ADC factory.
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