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Regularly inspect units in accordance with the same items
as described in the chapter "Commissioning" . To ensure
the reliability and service life, the following additional items
should be with special attention.
Regularly inspect the water temperature difference,
pressure difference, detect filter clogging, water reduction
or with air inhalation. If circulating water is insufficient or
water temperature is lower than the normal range, it may
give rise to freezing plate heat exchanger .
It is strongly recommended that cleaning plate heat
exchanger while water filter cleaning is underway. Pay
attention to the following tips and the normal cleaning
method.
Plate heat exchanger cleaning should be conducted by
professionals. Please ask an experienced chemical industrial
company for processing. Contact your agent or dealer for it.
Select right cleaning agents according to the deposition of
dirt on plate heat exchanger. Cleaning agents varys with the
deposition of dirt.
The plate heat exchanger is made of stainless steel, do not
use chlorine or fluoride acid cleaning agents to clean it,
otherwise, heat exchanger will be damaged, which results in
refrigerant leakage.
After using the cleaning agents, flush water pipes and heat
exchanger with clean water to avoid the corrosion and water
scales re-absorption in water system.
In the case of using cleaning agents, regulate the concentration
of cleaning agents, cleaning time and temperature according to
the deposition of dirt .
After cleaning with acid, neutralization treatment of waste
liquid is required, contact the waste water treatment company
to treat waste liquid.
Clean agents and nuetralized agents have corrosive and
irritative impacts on eyes, skin and nasal mucosa etc.
Therefore, cleaning work must be conducted with protective
device (such as goggles, protective gloves, protective shoes,
protective masks, protective cloth, etc.) to avoid inhalation or
contact with these agents.
Clog kinds & Cleaning Agents(reference)
Clog kinds
Incrustation
Incrustation
Rust
Dust & Sand
Grease
Plastic
Fiber
31
Cleaning agents
Citric acid, Acetic acid,
Phosphoric acid
Detergent & Hot Water
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