SINGLE SCREW CHILLERS IMM
Engineered for Flexibility and Performance
45
Fig.5
4.2 The flow switch shall be installed in the horizontal pipeline or vertical pipeline in the
direction of liquid flows other than the pipeline of downward direction of liquid flows. If
it has been installed in the pipeline in upward direction of liquid flows, the gravity
effect shall be taken into account to adjust the values higher slightly than the typical
flow values in the Table 1.
Table 1 Typical Flow Value (Take Fengshen FSF50P-1 as an example)
Pipeline
Size
Target
Slice Size
Flow <m³∕h>
Remarks
Min.
Disconnection
Max.
Disconnection
ɸ168
6"
24
72
Target slices of 1", 2", 3" and 6"
shall be installed
ɸ219
6"
48.4
174
Target slices of 1", 2", 3" and 6"
shall be installed
ɸ273
6"
43
90
Target slices of 1", 2", 3" and 6"
shall be installed
Example: the size of connection pipe for chiller is
ɸ
168 with the min. flow of 32.5 m³/h;
According to the examination of the table above, when the cut-off value is between
the min. and max. cut-off values, the cut-off value of water flow shall be adjusted to
the nearly min. water flow through adjusting the screw based on the methods below.
4.3 Special wrench must be used to connect the three-way connector on the hexagonal
panel of switch connector and the switch casing cannot be held for connection so as
to prevent damage.
4.4 The projection plane of flowing direction sheet shall be perpendicular to the fluid
direction, and the direction of the arrow on the switch casing shall be in line with the
fluid direction when the flow switch is screwed into the three-way connector.
Notes:
The flow switches shall not suffer water hammer, proper throttle must be used
if the rapid closing valve is installed in the downstream of the flow switch.
Fig.6 Installation Diagram of Throttler