Long-Term Storage And Place; The Centrifugal Chiller - LG RCWFL Series Installation Manual

3-4. Long-term Storage and Place

Store and manage under the conditions below in case of a long-term storage of the Centrifugal Chiller regardless of
whether it is before or after installation.
3-4-1. Conditions of Storage Place
Store the product in a place matching with the environment conditions of installation place in the Section 3-2.
If water is supplied when the water pipe is connected, make sure to store the product after completely draining the
cold water and coolant and purge with the air additionally so that there is no water inside the product. Water remain-
ing in the heat pipe may cause freezing breakage in an environment condition in which an outdoor temperature goes
below 0 °C or there is a rapid change in an outdoor temperature as the remaining water evaporates.
Place a protection cover for electrically running parts such as the control board and vane start, store the product in a
dry, vibration-free and safe place and protect from a long-term exposure to the sunlight.
3-4-2. Long-term storage Inspection of the Centrifugal Chiller
Inspection Inspection
Items Timing
Chiller Status When arrived
Inspection at the site
Storage of
When arrived
electric
at the site
systems
Regular In-
Weekly
spection
3-4-3. Inspection after a Long-term Storage
1) Inspect the oil status through the sight glass and check if there is any mechanical or electric abnormality before op-
eration in case of operating after a long-term storage.
If there is any abnormality, inspection by our engineers is required.
It is recommended to have an inspection by a professional service center after a long-term storage.
LG Electronics does not take any responsibility for all problems due to inspections by agencies other than LG Elec-
tronics or service centers (engineer) that we approved.
2) Inspection by LG Electronics or professional service engineers is required if the Chiller is left without an oxygen
pressure or a refrigerant before operating.
LG Electronics does not take any responsibility for all problems due to inspections by agencies other than LG Elec-
tronics or service centers (engineer) that we approved.
3) Inspection of electric systems
Check that there is no failure of parts and abnormality of wire connection parts, and measure the insulation resist-
ance of the motor.
Follow the steps in the operation & maintenance manual for the inspection procedure and judgement criterion.
4) Inspection of water systems.
Contamination due to inflow of dust and foreign substances, etc. during a long-term stop is expected inside the
cold water/ coolant system. Clean the water systems and inspect the filters.
The coolant system generally requires a special care as it is an open pipe system.
5) Conduct the test run following steps in the operation & maintenance manual.
Inspect if there is a damage and leakage of the refrigerant by inspecting the exterior of
the Chiller.
Check if there is any leakage in connection parts of the piping especially.
Store by covering the control board, security relay and control motor, etc. with vinyl
and desiccants (silica gel, etc.) inside.
Cover other electric systems with vinyl to protect from dust, etc.
Visually inspect if there is a damage of pipe or leakage of connection part.
Record and manage the pressure change by inspecting the pressure gauge installed
on the compressor. Follow steps in the installation manual when the refrigerant leaks.
Store the product without the filled refrigerant by filling nitrogen in the vacuum and in-
spect the pressure every day.
Inspection Description
13