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3.7
External Piping
No.
Automatic exhaust valve
1
Thermometer
2
Ball valve
3
Pressure meter
4
maintenance, close the ball valve to let the chilled water go to the cooling unit via the branch
so as to avoid shut-off loss. Install a pressure meter
and judge if there is a blockage according to the pressure difference.
Configure a multiple functional balance valve
Pipeline washing
chemical substances. For pipeline washing, use a hose to create a short circuit to make
the chilled water go directly from the inlet end to the return end without passing through
1
2
3
4
TI
PI
01
01
Inlet
Bypass
TI
02
Outlet
(Figure 3-11 : Suggested external piping)
Description
5
6
7
PI
02
PI
03
No.
5
Shut-off valve
6
Balance valve
7
4
at the return water end for adjusting the
7
17
Chapter 3
Precision
Cooling
Unit
Description
at the water inlet end as
1
in the water inlet
5
Installation
in
3
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