Midea MCCDH30A-TA3SL, Technical & Service Manual

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Air-cooled modular chiller unit
d. Special grounding screws should be used for earth connection. Bolts should not be installed or removed
at will; otherwise flow switches may suffer deformation and failure.
e. Flow switches have been set at minimal flow value before leaving the factory. They should not be adjusted
below the setting value at the factory, or they may suffer failure. After installing flow switches, please press
the flow switch lever several times to check them. When the lever is found not to respond with
“
clatter”,
rotate the screw in a clockwise direction, until “clatter” occurs.
f. Be sure to determine the model of target slice according to the rated flow of the unit, the diameter of the
outlet pipe and the adjustment range of the target slice of the flow switch. Besides, the target slice should not
contact with other restrictors in the pipeline or on the inner wall of the pipeline, or the flow switch cannot be
reset normally.
● Determine whether the flow switch and the system connected with it are in good operation according to the
measured value by flow meter, namely, when the measured value on flow meter is less than 60% of rated
water flow of the unit, the target flow controller should be cut off and observed for 3 working periods, and it
should be covered with flow switch shell timely.
Schematic diagram of water flow switch
1 .2.4 Installation of water system pipeline for 30kW module
Installation of single-module water system pipeline
Installation of multi-module water system pipeline
1) Installation mode I (recommended installation mode)
n :the module quantity, max 16