VARISTAR Cooling unit SHX 30
Maintenance
61
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7.4
Antifreeze and anti-corrosion agents
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WARNING
Health hazard!
The use of chemicals can present a health hazard.
•
Observe the safety data sheets.
•
Wear protective clothing as stated in the safety data sheet when handling
chemicals (e.g. safety goggles, face shield, respiratory equipment, safety gloves,
safety shoes, etc.).
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To ensure sufficient a concentration of the anti-freeze and corrosion protection agent,
check the concentration according to the maintenance schedule.
This test is carried out using a conventional density measuring system or a refractometer.
Observe the manufacturer’ product information.
Check/top up an anti-freezing and anti-corrosion agent as follows:
1.
Take a sample from the control circuit (e.g. at the filling and drain cock). Withdraw
at least 0.5 l (0.1 gal) of the medium to achieve useful measuring results.
2.
Measure the concentration with a suitable measuring device.
3.
If the concentration is outside of the specified range, top up the anti-freezing and
anti-corrosion agent.
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Note
•
The chemicals that are required for the process are not included in the scope of
supply.
•
Please observe the safety data sheet of the chemicals that are used.
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