B&C Technologies DI-475 Industrial User Manual
Page 17
3. ELECTRICAL CONNECTIONS
NOTE:
A wiring diagram is included with each dryer and is affixed to the
panel inside the right side control cabinet.
The only electrical input connections to the dryer are the 3-phase (3 ) 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 left side control cabinet.
Providing local codes permit, power connections to the dryer can be made by the use of a
flexible Under writers Laboratory listed chord / pigtail (wire size
must conform
to rating of
the dryer), or the dryer can be hard wired directly to the service breaker. In
All
cases, a strain
relief must be used where the wire(s) enter the dryer electrical service (relay) box.
NOTE:
A CIRCUIT SERVING EACH DRYER MUST BE PROVIDED.
4. GROUNDING
Grounding (earth) connections 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 Electric Code ANSI/NFPA NO. 70-latest edition. The ground
connection may be to a proven earth ground at the location service panel.
NOTE:
A grounding connection (terminal lug) is provided in the dryer at
the left side control cabinet.
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 grounded 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 non-metallic
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
(computer), an earth (zero) ground is required.
NOTE:
Grounding via metallic electrical conduit (pipe)
is not
commended.