Check The Resistance; Connect Other Wiring - Graco BDS Instructions-Parts List Manual

Feed Pumps or Pressure Pots
Use a ground wire and clamp to electrically connect
each of the supply pumps or pots to a true earth
ground. See your separate pump or pressure pot
manual.
Air and Fluid Hoses
Use only grounded hoses for supply lines.
Fluid Supply Container
Ground the container according to your local code.
All Containers Filled when Dispensing
Use only metal pails or containers, which are conduc-
tive, placed on the grounded scale surface. Do not
place the pail on a non-conductive surface, such as
paper or cardboard, which interrupts the grounding
continuity.

Check the Resistance

WARNING
FIRE, EXPLOSION, AND
ELECTRIC SHOCK HAZARD
To reduce the risk of fire, explosion, or
electric shock the resistance between
the BDS components and true earth
ground must be less than 25 ohms.
Have a qualified electrician check the resistance
between each BDS component and the true earth
ground. The resistance must be less than 25 ohms. If
the resistance is greater than 25 ohms, a different
ground site may be required. Do not operate the sys-
tem until the problem is corrected.
14 309279
Installation

Connect Other Wiring

Refer to the system and controller drawings starting on
page 54.
D Refer to your local code for the explosion proof
wiring requirements in your area.
Industrial PC
The Industrial PC is pre-connected at the factory. Do
not change the cable length. If the Industrial PC,
Industrial PC cable, or the barrier blocks fail, identify
and correct the source of the problem first. Then
replace the failed components with identical, approved
components only. Service must only be performed by a
qualified electrician.
Scale Platform
The scale platform is pre-connected at the factory. Do
not change the cable length. The platform is connected
to the controller through approved, intrinsically safe
barrier blocks. If the platform, platform cable, or the
barrier blocks fail, identify and correct the source of the
problem first. Then replace the failed components with
identical, approved components only. Service must
only be performed by a qualified electrician.
WARNING
FIRE, EXPLOSION, AND
ELECTRIC SHOCK HAZARD
To reduce the risk of fire, explosion, or
electric shock:
D The Batch Dispense System must be
electrically connected using approved
explosion proof conduit and fittings
D A qualified electrician must complete
all wiring connections.