PART TWO - INSTALLATION
SECTION 3 - ELECTRICAL CONNECTIONS
Model P53 pH/ORP Analyzer (universal-mount 1/2 DIN)
Rev. 6-501
30
3.7 Line Power
☞
☞
Refer to the following appropriate figures and connect line
power to TB3 terminals using the standard three-wire con-
nection arrangement.
Use wiring practices which
conform to local codes
(example: National Electric Code
Handbook in the U.S.A.).
WARNING:
REMOVE LINE POWER WHILE CONNECTING LINE
POWER WIRES TO THE TB3 TERMINALS. ALSO,
USE ONLY THE STANDARD THREE-WIRE CONNEC-
TION ARRANGEMENT FOR SINGLE-PHASE LINE
POWER TO PREVENT AN UNSAFE CONDITION, AND
TO ENSURE PROPER ANALYZER OPERATION.
NOTE:
In all cases, connect the line power cable ground
wire (usually green) to:
The grounding strip at bottom of case (5 open
holes -- Figures 2-12, 2-14 or 2-16) for analyzers
with “B” prefix serial number.
The “ground symbol” Terminal 1 on TB3 (Figures
2-13, 2-15 or 2-17) for analyzers with “A” or no
letter prefix serial number.
The “115” and “230” voltage circuits are protected with in-
ternal, board-mounted slow-blow fuses.
NOTE:
For 230 volt split phase line power, be sure to con-
form to local codes with regard to fusing the 115
volt line connected to the “N” terminal.
3
4
2
115
230
N
FIGURE 2-12
Connecting 115 Volt Single Phase
to Analyzers with “B” Prefix Serial Number
230 115
N
2
3
4
FIGURE 2-13
Connecting 230 Volt Single Phase
to Analyzers with “B” Prefix Serial Number
