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WARNING: 208 VAC AND 240 VAC ARE NOT THE SAME. Any damage done to the dryer
components due to improper voltage connections will automatically VOID THE
WARRANTY.
NOTE: ADC reserves the right to make changes in specifications at any time without notice or
obligation.
2. Electrical Connections
NOTE: A wiring diagram is included with each dryer and is located in the blueprint pocket
inside the left hand side control cabinet.
The main electrical input connections to the dryer are the 3-phase (3ø) power leads (L1, L2, and L3),
GROUND, and in the case of 4 wire service, the Neutral. These electrical connections are made at the
power distribution block located in the right side base electrical enclosure.
If the dryer has an optional sprinkler circuit then a separate single-phase (1ø) source must be supplied to
the sprinkler circuit at the nameplate voltage. These connections are made at the power distribution block
located in the right side base electrical enclosure.
The main electrical 3-phase (3ø) connections (L1, L2, and L3) and the optional single-phase (1ø) connection
must be provided and installed in accordance with state and local codes. In ALL cases, a strain relief
must be used where the wire(s) enter the dryer electrical service (relay) box.
NOTE: A CIRCUIT SERVICING EACH DRYER MUST BE PROVIDED.
3. Main Grounding
A ground (earth) connection must be provided and installed in accordance with state and local codes. In
the absence of these codes, grounding must conform to applicable requirements of the National Electrical
Code ANSI/NFPA NO. 70-LATEST EDITION, or in Canada, the installation must conform to applicable
Canada Standards: Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or LATEST EDITION. The
ground connection may be to a proven earth ground at the location service panel.
NOTE: A grounding connection (terminal block) is provided in the dryer in the base electrical
junction box.
For added personal safety, when possible, it is suggested that a separate ground wire (sized per local
codes) be connected from the ground connection of the dryer to a cold water pipe. DO NOT ground to a
gas or hot water pipe. The grounded cold water pipe must have metal to metal connections ALL the way
to electrical ground. If there are any nonmetallic interruptions, such as a meter, pump, plastic, rubber, or
other insulating connectors, they must be jumped out with no. 4 copper wire and securely clamped to bare
metal at both ends.
IMPORTANT: For personal safety and proper operation, the dryer must be grounded. For
proper operation of the microprocessor controller (computer), an earth (zero)
ground is required.
NOTE: Grounding via metallic electrical conduit (pipe) is not recommended.