Chemical Feed Pumps - Nalco 3D TRASAR Series Installation And Operation Manual

2.4.4 Chemical Feed Pumps

• Install the chemical feed pumps (inhibitors, dispers-
ants and biocides) as conveniently to the 3D
TRASAR system and chemical tanks as possible.
• Use pumps that are properly sized for the applica-
tion.
o Oversized pumps can result in product
overfeeds, which can damage the cooling
system.
o Undersized pumps can result in repeated
timeout alarms, which are triggered when a
relay is energized for longer than a user
specified time.
• Do not inject chemicals immediately upstream of the
3D TRASAR sampling point. Chemical injection
points should allow for good mixing prior to reaching
the sampling point.
• Avoid feeding biocides near the injection point of the bio-reporter
• Ensure that the suction side of the pump is always flooded.
Note: Acomplete line of chemical feed pumps is available through the Nalco Global Equipment
Solutions Group (NGES). Please call (800)323-8483 or (630) 848-3387 for assistance with
selecting the right pump for your application.
Chemical feed pumps available through NGES
Technical Help
(630) 305-CHEM
3D TRASAR
521-OM0108.88
Copyright © 2009 Nalco Company
®
5500 - Installation & Operation Manual
Plumb controller
Plumb using ball valves provided. Inlet
water from recirculating system must be
at 5 GPM or greater.
Outlet
½"
Union
0.5
GPM
2-21