Flooded type water cooled screw chiller (PCB Control)
MCAC-CTSM-2012-11
20
Pressure Drop (see product parameters) + Pipeline Resistance (length of the least favorable
loop pipe * 0.05) + Local Resistance (length of the least favorable loop pipe * 0.05 * 0.5)) * (1.1
~ 1.2)
4) The
flow switch
must be arranged on the drain pipe of the evaporator. The flow switch shall be
interlocked with the input contact in the control cabinet. Its installation requirements are as
follows:
(1) The flow switch shall be installed on the pipe vertically.
(2) The straight pipe section at each side of the flow switch shall have a length that is at least 5
times the pipe diameter; do not install it near the elbow, orifice plate or valve.
(3) The direction of the arrow on the flow switch must be consistent with the direction of water
flow.
(4) In order to prevent vibration of the flow switch, remove all air in the water system.
(5) Adjust the flow switch to keep it in open state when the flow is lower than the minimum flow
(the minimum flow is
70%
of the design flow). When the water flow is satisfied, the flow
switch shall keep in closed state.
5) The
water filter
must be installed before the water inlet pipeline of the unit, which shall be
provided with a 25-mesh screen. This will aid in preventing foreign material from entering and
decreasing the performance of the evaporator.
6) A strainer should be placed for enough upstream to prevent cavitation at the pump inlet (consult
pump manufacturer for recommendations). The use of a strainer will prolong pump life and help
maintain high system performance levels
7) The
flushing and insulation
of the water pipelines shall be carried out before it is connected with
the unit, so as to prevent dirt from damaging the unit.
8) The
design
water pressure
of the water chamber is 1.0Mpa. Use of the water chamber shall be
not exceeding this pressure in order to avoid damaging the evaporator.
9) Do not load the weight of water pipe onto the unit. When water inlet/outlet are connected with
corresponding water pipe,
soft connection
such as rubber joint should be used to avoid the
transmission and inter-disturbance of vibration and noise to avoid the vibration which may be
transmitted to indoor side.