Gondzik NL-BKDX100-400II/R, Руководство пользователя

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VI. Maintenance & Repair

Daily inspection
1. Check whether the key of the controller is sensitive or a fault code displayed
2. Before power on, please check the temperature parameters, switch status, and load output.
A. There shouldn't have a big difference between the temperature displayed and the real ambient
temperature.
B. It is the normal status that the high-voltage and low-voltage switches are often closed, and the water flow
switches are often open.
C. Load display off
3. Check whether the voltage is normal before operating.
4.After starting up, check whether the water pressure is normal, listen to whether working with abnormal noise.
After running smoothly, please check whether the current is in accordance with the nameplate.
5. Check whether the parameters are within the normal range after running.

Maintenance of the main components.
1.Compressor: open the box, check whether the terminals are fixed tightly without rusty, and check whether the
resistance of three-phase winding is the same.
2. Fins: check whether the evaporator fin is blocked, and clean it timely.
3. Heat exchanger: check whether there are scales, and clean the scales timely.
4.The motor has been lubricated and sealed in advance before left the factory, therefore lubrication is not
needed during maintenance.
5.After a long time of operation, the heat transfer surface of the waterside heat exchanger will be deposited
with calcium oxide and other minerals because of the high-temperature water outlet. If these minerals fouling
too much on the heat transfer surface, it will affect heat transfer performance, so please regularly clean it.

Maintenance of main electrical parts
1.Air switch, AC contactor and relay inspection: whether the terminal is tight, rusty and burnt. Close the switch
and check whether the input and output of each phase are connected;
2.Whether the AC contactor and relay coil are sensitive and on-off closed completely.
3.Capacitance: check whether it bulges or leaks oil
4. Motherboard: check whether the power light is on, whether the fuse is burnt out, and whether there are black
burnt spots on the board.
5.Transformer: check whether the primary voltage and secondary voltage are consistent with the nameplate
6.Periodically inspect the electrical connection and monitor the operating voltage, operating current, and phase
balance. Regularly check the reliability of the electrical components, replace the expired and unreliable parts
timely.