DUO LANG DL-4500 (01) PDF Document

The DUO LANG DL-4500 is configured with four 2.5 inch trundles, namely two trundles with brake and two trundles without brake. Before use, take out the trundles and use screws to fix each trundle at the bottom of the water tank. The trundles with brake shall be placed at the same side while the trundles without brake shall be placed at the other side.

Strongly press the upper part of the water injection door to open it. You can then use a water pipe or watering can to add a certain amount of water. Finally, strongly press to close the water injection door. Alternatively, if your DUO LANG DL-4500 has the optional external water pipe model, you can twist the water pipe connector of the external water supply into the external water socket of the machine. The float valve inside will automatically open or close according to the water level.

After the power supply is connected, the cooling fan is under standby state and the buzzer sends a prompt tone. Press the ON/OFF key to start the cooling fan at intermediate speed. Press it again to make it run at low speed, and press it once more to turn off the fan. To adjust fan speed, continuously press the speed key to switch between low, intermediate, and high speed. To adjust the swinging direction, press the vane-swinging key to turn on the left-right swinging function, and press it again to cancel.

Under the operating state, press the timing key to make the cooling fan enter the timing state. The timing interval is 0.5h and the timing range is 7.5h. The preset time is increased by 0.5h for each press and can be maximally increased to 7.5h. When the preset time is at 7.5h, press the key again to cancel the timing function.

Press the refrigeration key to start the air cooling function. If ice water is added in the water tank at this moment, the temperature at the air outlet can be reduced by 5 to 8 degrees Celsius. After several minutes, press this key again to cancel this function.

To disassemble the rear wet curtain plate, unscrew the three screws at the upper part of the stone plate. Then, lift the wet curtain plate until its bottom is out of the water tank and pull the rear wet curtain plate outward until it is completely loosened.

To discharge water, unscrew the water drainage rotary knob at the back of the water tank, then slightly incline the DUO LANG DL-4500 to completely discharge the water in the water tank. It is recommended to periodically drain the water to keep good water quality and to weekly clean the machine.