HAIXING
chapter 4
Maintenance
4-18
Cooling water standard
มาตรฐานนํ้าหล่อเย็น
Item
Unit
Cooling water
Makeup water
PH(25
°
)
6.5-8.0
6.0-8.0
Conductivity (25
°
)
μ S/m
<800
<200
Total hardness (CaCO
3)
mg/l
<200
<50
Acid wastage ((CaCO
3)
mg/l
<100
<50
(Cl
-
)
mg/l
<200
<50
(SO
4
2-
)
mg/l
<200
<50
(Fe)
mg/l
<1.0
<0.3
(SiO
2
)
mg/l
<50
<30
(S
2-
)
mg/l
0
0
(NH
4
+
)
mg/l
<1.0
<0.2
4.5.3 Check-up, Maintenance, Clean of Cooler
4.5.3.1 Cooler check-up
Check follow items after decomposing as chapter 4.5.4.1 (see chap 4.5.1
construction)
1)
Check water in cover and water out cover, fixed tube board and moving
tube board see if there are any impurities or be corroded.
2)
Check whether all seal element is in good condition.
3)
Check heat transfer tube surface, cylinder inner surface, see whether
there are an impurities or be corroded.
In order to facilitate the check-up of heat exchanger, heat exchanger is
better to be taken off from the machine.
City water supply (or water similar) should be checked once each 6 months.
Industrial water or underground water or water that has high salinity should
be checked once a month.
Attention should be also paid the status of machine. Extend or shorten the
time between two check-ups if necessary.
4.5.3
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Summary of Contents for M16
Page 34: ...HAIXING Chapter2 Safety 2 3 ...
Page 35: ...HAIXING Chapter2 Safety 2 4 ...
Page 36: ...HAIXING Chapter2 Safety 2 5 ...
Page 37: ...HAIXING Chapter2 Safety 2 6 配 电 箱 空气 开 关 上 按钮箱上 动模板前方中间 ...
Page 38: ...HAIXING Chapter2 Safety 2 7 标牌样本 安装位置 ...
Page 39: ...HAIXING Chapter2 Safety 2 8 后安全门上 前安全门上 料筒罩上 2 1 2 Maintenance and repair work ...
