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| WARNING! |
Is your cooling system
protected, or could it
look like this?
To prevent corrosion,
scale & algae..
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..USE
COOLFLOW!
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CHILLER
FAILURE DUE TO UNINHIBITED GLYCOL?
Photos I and II: Show the inside
of a chiller condenser, where the rivets have been corroded away, allowing the main diversion plate to fall off.
There is also advanced corrosion of the coil frame-work and a build-up of rust sediment and scale within the heat-exchanger.
Several recent chiller failures have been attributed to the use of uninhibited glycol. Specifically standard Mono
Ethylene and Mono Propylene Glycol (without multi-metal inhibitors*) can actually generate galvanic action leading
to corrosion and failure. Blockage from scale and algae build-up can also occur without inhibitors. * Borax is often quoted as a corrosion inhibitor
(within MEG), but only counteracts the acidity of the glycol as it becomes spent - not as a pro-active corrosion
inhibitor. Neither technical nor pharmaceutical grade MPG contain corrosion inhibitors.
When specifying MEG or MPG anti-freeze, frost protection is the primary objective and the need for corrosion protection
is often overlooked. However most engineers and plant managers would agree, that treatment of closed loop systems
is preferred practice. For a few extra** pence per kilo it is now possible to install a fully inhibited CoolFlow
product. ** Depending on
your current purchase price, CoolFlow inhibited glycols may even be less expensive.
To ensure your investment is properly protected, prevent costly down-time and maintain production schedules, it
is recommended that inhibited coolants are used for all chilled water systems.
Hydratech blend and market the CoolFlow range of inhibited glycols and coolants for use within industrial and food-grade
systems. These products incorporate formulations to prevent corrosion and scale build-up.
For the food industry we recommend
CoolFlow
FG
which is Food Grade Mono Propylene Glycol, blended with food-safe*** corrosion inhibitors,
or CoolFlow
LV which is a low
viscosity food-grade coolant.
*** Nitrite and molybdate inhibitors are toxic and therefore NOT suitable for use in food or beverage cooling systems.
For systems outside the food industry, we recommend CoolFlow IG
which is Mono
Ethylene Glycol, blended
with synergistic multi-metal corrosion inhibitors and anti-scaling compounds.
Other Coolant Services
| » Bespoke coolant blending to
suit specific site requirements. Including dyes and taste additives. |
| » Analysis of coolant samples,
to confirm frost protection, inhibitor reserves and water quality. |
| » Proportional dosing units,
for automatic dosing of Hydratech products when system is topped-up. |
| » Supply of coolant test kits,
for customers wishing to monitor on a more regular basis. |
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