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Chiller to how to maintain?


The first point: to maintain chiller clean the filter surface, the filter ambient air circulation, clean the filter regularly, usually three weeks purged with compressed air filter once. Reduce mold "pour sweat" phenomenon. Stop plastic machine before, the first subsidiary of the mold cold sluice engine switched off, or turn off the chiller, the mold cavity temperature rises, the mold will not rust product. If the chiller using more than six months, or high and low engine fails often, or reduced cooling capacity, schedule and technical personnel cleaning the radiator (such as chiller mounting pressure gauge, high pressure gauge pressure is higher than three hundred PSI, such as more than, radiator surface should be cleaned and kept clean to improve heat sink effect). As described above according to the instructions washed several times, the fault persists, then please arrange for repair staff. Such as disabled for some time, due to water pollution sediments solidified Water Pump leaf material may be solidified product pollution, you must first loosen the pump rotor then boot to avoid leaf pump does not turn, lead to burn out the fuse. Cleaning the radiator chiller maintenance (for 5 or less chiller) first machine stops running, the next panel is removed before the machine filter, use compressed air to blow dust from the filter surface. The heat sink is dirty, it should be cleaned together. If the conditions, available air cleaner sprayed cooling medium surface, to be used a few minutes, rinse, repeat until the filter surface clean.
The second point: Chiller Common Faults and exclusion method, chillers Common Faults and exclusion method: Turn the power switch chiller power light is off, a fuse is not installed, the installation of an appropriate fuse. 2 Power indicator is damaged, replace the electronic board. 3-phase power supply wiring error (Note that assist control line), check the wiring problem, turn on the power switch and water pump switch burning fuse, short circuit fault Check control cables and main power line pump rotor stuck, use a screwdriver to loosen the rotor (for chiller 5 below) 1 water pump failure pump motor coil short circuit, open circuit, repair or replace the motor coil motor 2 pumps automatic overload trip, the number of current limit protection device within the permissible range appropriate to increase the half-press reset key failure of the compressor 1 compressor coil short circuit, matching replacement compressor 2 compressor overload tripped automatically, the number of current limit protection device within the permissible range appropriate to increase the compressor and press the reset button frost 1 circulating water or circulating valve is not open, check valve, all piping, ensure the smooth flow, short circuit pipeline installation. 2 circulating water pipeline configuration is too small, increase the circulation pipe diameter, to ensure the normal circulation. Temperature Table 1 Temperature display digital beats temperature controller is damaged, repair or replace the thermostat temperature in Table 2 up and down the line is bad, repair or replace the thermocouple temperature line and 3 have a dirty body temperature, body temperature will wipe circulating ice water tank 1 set temperature is too low correct setpoint 2 water tank without circulating water, chilled water between exports and imports of shorting a loop out of control water temperature table 3, replace the thermostat malfunction high-pressure cooling bad table , radiator too dirty, clean the radiator can wind well, improved ventilation cooling fan does not work, check the fan motor is burned out, repair or replace the short-circuit high voltage electrical motors engine is damaged, replace high-pressure refrigerant is insufficient or poor engine cooling medium pipeline leak, supplementary refrigerant leak or after welding, vacuum refilling poor refrigerant heat, too dirty radiator, cooling water valve does not open or opened too small, clean the radiator and valve opening.
The third point to start and stop: Start position on the status of key dynamic keyboard, then the keyboard below the unit ON / OFF (on / off) toggle switch to the ON (ON), the unit will make a self-test, several seconds later, a compressor start until after the load increases another compressor starts, once the unit starts, all operations were automatically according to the unit cooling load (chilled water supply and return water temperature) changes automatically start and stop.
Normal operation: the unit normal operation, the controller will monitor oil pressure, motor current and other parameters of the system, if there are any problems, the control system will automatically take the appropriate measures to protect the unit and the fault information is displayed on the unit screen, per 24 hour period of operation, there should be someone at fixed time intervals permanent record unit operating conditions as long as the keyboard down below the unit oN / OFF toggle switch to the off position, the unit may stop order prevent damage, even when the unit is shut down, do not cut off the power supply unit. operation of the cooling tower fan fans, pumps, cooling water pumps, cooling water pumps are controlled independently, should be confirmed before starting the normal power supply, no inverter, no phase. pumps should be recognized before the open valves in the piping are open.