37 English
Water Quality
[NOTES]
(1) The circle marks in the columns for corrosion or scale to develop.
(2) Corrosion has a tendency to occur when water temperature is high (104°F(40°C) or higher), and if metals with no protective
coating whatever are directly exposed to water, it is advisable to take effective measures against corrosion such as adding
a corrosion inhibitor or deaeration treatment.
(3) In a condenser water circuit that uses a closed cooling tower, the closed circuit circulating water and makeup water must
satisfy its water quality standards for the hot water system, and passing water and makeup water must satisfy those for the
circulation type cooling water system.
(4)
Supply or makeup water should be tap water (clean water), industrial water, and underground water except for purified
water, neutral water and softened water or the like.
(5)
The fifteen items in the table above represent typical causes of corrosion and scale.
(6) Passing water may cause corrosion.
Do not use passing water.
After-Sales Service and Warranty
After-sale Service
Danger
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Refrigerant gas may produce a toxic gas if it comes in contact with fire such as from a fan, heater, stove, or cooking device.
Exposure to this gas could cause severe injury, or death.
Warning
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Do not disassemble, modify or repair the unit.
This may cause water leakage, electric shock, or fire.
Contact your dealer.
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Do not remove or reinstall the unit by yourself.
Incorrect installation may cause water leakage, electrical shock, or fire.
Contact your dealer.
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When asking your dealer to repair, inform related staff of the details as follows:
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Model name and product No. of air conditioner
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Shipping date and installation date
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Malfunction:
Inform the staff of the defective details. (Malfunction code being displayed on the remote controller.)
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Name, address, telephone number
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Repair after the warranty term is expired
Contact your dealer.
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Minimum storage period of important parts
Even after a certain type of air conditioner is discontinued, we have the related important parts in stock for 9 years at least.
The important parts indicate parts essential to operate the air conditioner.
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Recommendations for maintenance and inspection
Since dust collects after using the unit for several years, the performance will be deteriorated to some extent.
Disassembling and cleaning inside require technical expertise, so we recommend entering a maintenance and inspection
contract (at a cost) separate from normal maintenance.