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ENGLISH
8. COLD INSULATION WORK
The standard of LG Electronics is to deliver without the cold insulation construction from the factory.
Implement the cold insulation construction after leak test in the site, before commissioning.
Cold insulation construction must comply with the standard cold insulation construction manual.
Precautions for cold insulation construction
1) Make sure the operating parts (vane starter, valves, handles, etc.) are not covered or touched by cold insulation
material.
2) Make sure to implement construction in order for the cold insulation material to be removed well at the fastening
part of the fixed bolt of water box in order to open the water box when cleaning the tubes in the Heat Ex-
changer.
Also, consider for an easy separation of the water box cover.
(Consider for an easy separation of the flanges for water piping also)
3) Make sure to implement construction in order for the cold insulation material to be removed well at the fastening
part of the compressor and main piping bolt, order to be disassembled easily for overhaul or inspection service.
4) Make sure that cold insulation material does not block the view of the liquid level gauge and its window.
5) When working cold insulation, consider that the temperature sensor and others can be separated for replace-
ment.
6) Use cold insulation materials with an equal or higher thermal conductivity and quality than those specified by LG
Electronics.
7) Install the cold insulation material firmly using adhesive and completely close the gap between the insulation ma-
terial and the insulating part so that air does not get into it.
8) Thickness and specification of the cold insulation material should comply with the construction drawing of cold
insulation approved by LG Electronics. The standard design condition is as follows.
- Dry-bulb temperature: 29.4°C (85°F)
- Relative Humidity: 75%
9) After cold insulation work, make sure not to expose it to excessive sunlight or damage to the insulation.
Dew condensation through deformation or damaged parts may occur and reconstruction may be needed.
Cold Insulation
Work Scope
Figure 14. Locations requiring thermal insulation
Summary of Contents for RCWFL Series
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