HF scientific CLX Online Residual Chlorine Monitor (Old) - Manual (Page 15)

Note: Only qualified electricians should be allowed to perform the installation of the
instrument as it involves a line voltage that could endanger life.
CAPTIVE SCREW
HIGH VOLTAGE COVER
ALARMS
BULKHEAD
COMMUNICATION
BULKHEAD
POWER
BULKHEAD
POWER
TERMINAL
BLOCK
POWER CABLE
STRAIN RELEIF
ANCHOR
ALARM #2
TERMINAL
BLOCK
ALARM #1
TERMINAL
BLOCK
RS-485
TERMINAL
BLOCK
4-20mA
TERMINAL
BLOCK
Figure 5: Electrical Connections for the Instrument
4.4.1 Power
The instrument is equipped with 100-240 VAC, 47-63 Hz power supplies requiring
150VA; please verify that the line voltage falls within these specifications. It is
recommended that a circuit breaker be placed prior to the power connection to
allow for service. For safety it is recommended that the connection be less than 2
meters (six feet) from the instrument. While making connections, refer to Figure 5.
The CLX is intended for cord connection with a three wire non-locking grounded
power cord. A power cord can be purchased separately from the factory (Catalog
No. 20779S). The CLX is not supplied with a power cord. If the CLX is to be
used in the U.S. or Canada the power cord must be UL Listed & CSA Certified.
Please consult all local electrical codes for proper connection.
CLX (9/07) Page 9
REV 3.1