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8
Closed type
Items
Circulating water
pH(25C)
7.0~8.0
Conductivity[25C](mS/m)
Below 30
Chlorine ion(mg CI - /l)
Below 50
- /l)
2
Sulfuric acid ion(mg SO
Below 50
4
Acid demand[pH 4.8] (mg SiO
/l)
Below 50
2
Total hardness(mg SiO
/l)
Below 70
2
Ca hardness(mg CaCO
/l)
Below 50
3
Ion silica(mg SiO
/l)
Below 30
2
Reference Item
Fe(mg Fe/l)
Below 1.0
Copper(mg Cu/l)
Below 1.0
Sulfuric acid ion(mg S
2
/l)
Must not be detected
+
Ammonium ion(mg NH
/l)
Below 0.3
4
Residual chlorine(mg Cl/l)
Below 0.25
Free carbon dioxide(mg CO
/l)
Below 0.4
2
Stability index
-
Reference
• The "O" mark for corrosion and scale means that there is possi-
bility of occurrence.
• When the water temperature is 40°C or above or when un-
coated iron is exposed to the water, it can result in corrosion.
Therefore adding anti-corrosion agent or removing the air can be
very effective.
• In case of using the closed type cooling tower, the cooling water
and supplementing water must satisfy the water quality criteria
of closed type system in the table.
• Supplementing water and supplied water must be supplied with
tap water, industrial water and underground water excluding fil-
tered water, neutral water, soft water etc.
• 15 items in the table are general causes of corrosion and scale.
LIFTING METHOD
- When carrying the unit suspended, pass the ropes under the unit and
use the two suspension points each at the front and rear.
- Always lift the unit with ropes attached at fours points so that impact
is not applied to the unit.
- Attach the ropes to the unit at an angle of 40° or less
A
40° or less
B
Rope supporter
!
CAUTION
Be very careful while carrying the product.
• Do not have only one person carry product if it is more than 20kg.
• PP bands are used to pack some products.
Do not use them as a means for transportation because they are
dangerous.
• Tear the plastic packaging bag and scrap it so that children can-
not play with it.
Otherwise plastic packaging bag may suffocate children.
• When carrying in outside unit, be sure to support it at four points.
Carrying in and lifting with 3-point support may make outside unit
unstable, resulting in a fall of it.
• Use 2 belts of at least 8 m long.
• Place extra cloth or boards in the locations where the casing
comes in contact with the sling to prevent damage.
• Hoist the unit making sure it is being lifted at its center of gravity.
Effect
Supplemented water
Corrosion
Basic Item
7.0~8.0
O
Below 30
O
Below 50
O
Below 50
O
Below 50
-
Below 70
-
Below 50
-
Below 30
-
Below 0.3
O
Below 0.1
O
Must not be detected
O
Below 0.1
O
Below 0.3
O
Below 4.0
O
-
O
Sub line
WARNING
INSTALLATION
Scale
O
• Install at places where it can endure the weight and vibration/noise
O
of the outside unit .
-
• The outside unit supports at the bottom shall have width of at least
O
100mm under the Unit's legs before being fixed.
O
O
• The outside unit supports should have minimum height of 200mm.
O
• Anchor bolts must be inserted at least 75mm.
O
O
-
-
-
-
-
O
The location of the Anchor bolts
62
Foundation for Installation
• Fix the unit tightly with bolts as shown below so that unit will not fall
down due to earthquake or gust.
• Use the H-beam support as a base support
• Noise and vibration may occur from the floor or wall since vibration is
transferred through the installation part depending on installation sta-
tus. Thus, use anti-vibration materials (cushion pad) fully (The base
pad shall be more than 200mm).
755
631
62
The location of
anchor bolt
At least
200mm
- Quick Links:
- Installation Process
- Dip Switch Setting
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