Connecting The Electrical Control Panel To A Power Source; Check The Resistance Between The Supply Unit And The True Earth Ground - Graco Therm-O-Flow 5 Instructions-Parts List Manual

Connecting the Electrical Control Panel to
a Power Source
The Electrical Control Panel (Fig. 2) comes already
attached and wired to the ram, however before the
supply unit becomes functional, you must connect the
electrical control panel to a power source.
Fig. 2
Have a trained electrician connect the electrical control
panel to a grounded electrical source that has the
required service ratings:
Control
Panel Zones: VAC:
Model:
617300 3
(Standard)
617330
(Swirl)
617349 4
Installation
Full
Hz: Phase: Load
Amps
480 60 1
480 60 3
For information about specific terminal locations and
connections, see Schematics on page 67 for wiring
diagram information.
To connect the control panel to the electrical source:
1. Create an opening in the control panel's housing
for the conduit that will enclose the wire from the
facility's power source.
2. Thread the wire from the power source into the
control panel housing, and then connect the power
source wires to the appropriate terminals on the
DISCONNECT switch.
Check the Resistance Between the Supply
Unit and the True Earth Ground
FIRE, EXPLOSION, AND ELECTRIC
SHOCK HAZARD
To reduce the risk of fire, explosion, or
electric shock the resistance between
the supply unit components and true
earth ground must be less than 0.25
ohms.
Have a qualified electrician check the resistance
7.3
between each supply unit component and the true
earth ground. The resistance must be less than
0.25 ohms. If the resistance is greater than 0.25 ohms,
a different ground site may be required. Do not operate
9.8
the system until the problem is corrected.
WARNING
310528 15