6. TRIAL RUN
6.1 Points for attention prior to trial run
6.1.1 After the water system pipeline is flushed several times, please make sure that the purity of water meets the requirements; the
system is re-filled with water and drained, and the pump is started up, then make sure that water flow and the pressure at the outlet meet
the requirements.
6.1.2 The unit is connected to the main power 12 hours before being started up, to supply power to the heating belt and pre-heat the
compressor. Inadequate pre-heating may cause damages to the compressor.
6.1.3 Setting of the wired controller. See details of the manual concerning setting contents of the controller, including such basic settings
as refrigerating and heating mode, manual adjustment and automatic adjustment mode and pump mode. Under normal circumstances, the
parameters are set around standard operating conditions for trial run, and extreme working conditions should be prevented as much as
possible.
6.1.4 Carefully adjust the target flow controller on the water system or the inlet stop valve of the unit, to make the water flow of the system
be 90% of the water flow specified in Table 7-1
.
6.2 Check item table after installation
Checking item
Description
Yes
No
Whether installing site
is meet for requirements
Whether water system
is meeting for
requirements
Whether electric wiring
system is meeting for
requirements
Units are fixed mounting on level base.
Ventilating space for heat exchanger at the
air side is meeting for requirement
Maintenance space is meeting for requirement.
Noise and vibration is meeting for requirement.
Sun radiation and rain or snow proof measures are
meeting for requirements.
External physical is meeting for requirement.
Pipe diameter is meeting for requirement
The length of system is meeting for requirement
Water discharge is meeting for requirement
Water quality control is meeting for requirement
Flexible tube’s interface is meeting for requirement
Pressure control is meeting for requirement
Thermal insulation is meeting for requirement
Wire capacity is meeting for requirement
Switch capacity is meeting for requirement
Fuse capacity is meeting for requirement
Voltage and frequency are meeting for requirement
Connecting tightly between wires
Operation control device is meeting for requirement
Safety device is meeting for requirement
Chained control is meeting for requirement
Phase sequence of power supply is meeting for
requirement
Table 6-1
I&O manual
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