GMW 5203, Руководство пользователя

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AP-134
Thermo Scientific Cooling Water System:
Initial Fill/ Cleaning/Flushing Procedures
Analytical Procedure
The Thermo Scientific Treated Water (460-
TFS200.11) consists of a 5-gallon package
of pretreated water for prevention of
corrosion, scaling and microbial growth.
The Thermo Scientific Treated Water is
designed to treat cooling water systems
of all volumes
. Corrosion and Scale
Inhibitors are pre-added to deionized (DI)
quality water at proper dosages to ensure
complete system protection. To use, directly
fill the cooling water system to normal
operating levels with the Thermo Scientific
Treated Water. No additional water or
additives are needed. Place system in
normal operation.
Of important note, the treated water is
made using deionized (DI) quality water.
The DI process removes minerals
normally found in tap and well waters
that cause scaling and fouling on heat
transfer surfaces. DI water by itself can
be extremely corrosive to metal surfaces
and should never be used alone in a
cooling water system. However, the
addition of the yellow metal, aluminum
and carbon steel corrosion inhibitors to
the DI water base make the solution non-
corrosive. The Treated Water solution is
no longer DI water after the addition of
the inhibitors and meets all requirements
of standard equipment specifications.
If additional system water makeup is needed
during operation, add Thermo Scientific
Treated Water only. Adding raw, untreated
tap water will introduce contaminants and
dilute Treated Water Inhibitors resulting in
microbiological growth and/or system
corrosion.
It is recommended to change the fluid after 6
months of operation ( see SEMIANNUAL
WATER CHANGE ).
SEMIANNUAL WATER CHANGE
Purpose
All cooling water systems require attention in
order to minimize corrosion and fouling,
especially biofouling. The recommended
method is to change the treated cooling
water on a regular 6 month schedule to
minimize the risk of corrosion and fouling.
When replacing fluid, it is recommended to
flush the system to remove material that
may have accumulated since the last water
change and replenish active inhibitors that
are consumed by metal surfaces over time.
Changing the fluid will also introduce fresh
preservatives that will ensure prevention of
microbiological growth. The following
procedure should be used every 6-months.
Procedure
1. Drain the system completely.
2. Refill the system to normal operating
levels with Thermo Scientific Treated
Water.
3. Record the time and date of the Treated
Water change to serve as a reminder for
the next water change date.
4. The system is now ready for use.
For more information, please contact the
Inside Sales Department at
(800) 258-0830.