Contamination
of thermal fluid systems is always self-inflicted. It happens when
a fluid with poor thermal stability (hydraulic fluid and glycol solutions
are prime suspects since they are often stored in drums in the same area)
is added by mistake.
An
immediate result may be pump cavitation, or a “geyser” from the expansion
tank vent. However, many times the only indication that contamination has
occurred is a rapid plugging of the pump suction strainer with carbon generated
by the contaminant. Preventing contamination comes down to a simple matter
of good housekeeping around the heater.
- Have
a hose and pump dedicated to transferring thermal fluids. Padlock them
to the heater if necessary to make sure they don’t get used for anything
else.
- Promptly
remove any empty drums from the room. You might be surprised at what gets
put into them (and then again maybe not).
- Don’t
store other drummed material anywhere close to the heater. You don’t
want anybody who might be illiterate and color blind to make a mistake.
- Never ever put
fluid from the overflow tank into the system. It’s in the overflow
tank for a reason.
Click one of the below links for the complete....
Technical
Data Sheet: Fluid Degradation Causes and Cures
Visitors (click
here)
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here)
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