4
3.0
INSTALLATION
3.1
Installation
Once the
Pulse~
Pure Integrated Controller panel is mounted, the blowdown valve may be located at any
distance from the controller. The conductivity probe should be placed as close to the panel as possible.
For field installed integrated controllers the probe and flow switch assembly must be located within 20
ft. of the integrated controller. Sufficient flow to the probe assembly should be ensured by piping supply
from the discharge side of recirculating pump and return to either the basin or the suction side of
recirculating pump. Always route low voltage (sensor) signals with at least a 6” separation from AC
voltage wiring.
Locate the probe assembly where an active sample of cooling tower water is available. The probe and
flow switch (system dependent) must be located where they can easily be removed for cleaning and
inspection. They must be situated so that the assembly is always full of water when the tower is
operating. Refer to
Figure 1
and
Figure 2
for typical installations.
IMPORTANT: To avoid cracking the female pipe threads on the supplied plumbing parts, use no
more than 3 wraps of Teflon tape and thread in the pipe FINGER tight plus 1/2 turn! Do not use
pipe dope to seal the threads of the flow switch because the clear plastic will crack!
3.2
Icon Definitions
3.3
Typical Mounting
Mount the
Pulse~
Pure Integrated Controller panel so that the Chamber cable will reach the bottom
connector.
It is advisable to mount the Pulse~Pure Purification Chamber before mounting the
panel to ensure that the shielded cable reaches the bottom of the panel without stress.
The panel
should be mounted at a height and location that allows operators to fully open the panel door for routine
access. Locate the conductivity probe in side stream piping which supplies a representative portion of
evaporative cooling water and is within 20 feet of the panel. Install side stream piping with isolation
valves so that the probe and flow switch (system dependent) can be easily removed for periodic cleaning
and inspection. See
Figure 1
and
Figure 2
for typical mounting options. Contact your Evapco
representative for specific installation recommendations.
Symbol
Publication
Description
IEC 417, No.5019
Protective Conductor Terminal
IEC 417, No. 5007
On (Supply)
IEC 417, No. 5008
Off (Supply)
ISO 3864, No. B.3.6
Caution, risk of electric shock
IEC 3864, No. B.3.1
Caution
