Rockwell Automation 20L-LL PowerFlex 700L Liquid-to-Liquid Heat Exchanger Control Board Replacement - Manual (Page 3)

PowerFlex® 700L Liquid-to-Liquid Heat Exchanger Control Board Replacement 3
Step 2: Removing Power
from the Heat Exchanger
A. Turn off and lock out input power.
B. Verify that there is no voltage at the heat exchanger’s input power
terminals.
Step 3: Opening the
Electrical Box Door Using the flat blade screwdriver, turn the locking mechanism on the
electrical box door counterclockwise one-quarter turn and open the door.
!
ATTENTION: Remove power before making or breaking cable
connections. When you remove or insert a cable connector with
power applied, an electrical arc may occur, which can cause
personal injury or property damage by:
• sending an erroneous signal to your system’s field devices,
causing unintended machine motion
• causing an explosion in a hazardous environment
Electrical arcing causes excessive wear to contacts on both the
module and its mating connector. Worn contacts may create
electrical resistance.
L1 L2 L3
O
I
Electrical Box
Locking
Mechanism