Maintenance Tips

Evaporative air cooler is a kind of energy-saving equipment and it only needs some maintenance. But as the machine is installed outside, to have a better cooling effect, its better for you to do some cleaning after a long time using.

Main maintenance

• Clean water tank.
• Clean valve by tap water; if there is too much dust in the valve, you can take it out and then clean it by tap water.
• Clean cooling pad.
• Remove the pad from the cooler, and then clean it by tap water.

When in winter or you don’t use the coolers for a while, please do the following:

First, close the water valve and remove the cooling pad to have a complete cleaning as shown, at the same time, empty the tank and clean it. If permits, its better to have a disinfection. After cleaning, install the cooling pad and make the cooler working 5 to 8 minutes to dry the pad, and at last shut down the power supply. It will be better to hood protective cover to stop the dust outside.

Remove the smell
If you don’t clean the cooler or do some maintenance after using some time, the air cooled may have some smell and you should clean the cooler and tank as Item 2.

Notes:

1. It is necessary to cut down the power supply and put a sign saying maintenance and no use on the controller switch in order to prevent.
2. Please be careful to remove the cooling pad and the water pressure cannot be too high in order to protect the pad. Do not add any corrosive chemicals to the pad.
3. Fasten safety belt when working at height for service people.

Besides the reasons shown above, inadequate cooling also can be caused by the following reasons: low water inlet pressure, no water inlet of float or solenoid valve.

Water leakage

Leakage from drain valve

1. The drain valve is stuck by dirt and cannot be closed strictly. Please clean the drain valve and remove the dirt.
2. When installing the filter screen, the float valve is pressed by the screen which makes water into it continuously. Please check the filter screen and reinstall it correctly according to the user guide.
3. Sealed spacer in the float valve is damaged. Please change a new spacer.
4. The water tank is slant. Please adjust it to the level.

Besides the reasons shown above, water leakage also can be caused by the following reasons high water inlet pressure, which makes the float valve unclosed and causes high water level.

Leakage from air pipe

1. The filter screen is broken. Please Change a new one.
2. There is burr in the surface of filter screen and makes water into the venturi. Please make sure that the surface of filter screen is smooth.
3. Filter screen is too dirty and stuck by dirt. Please clean it and remove the dirt.
4. The water distributor is too dirty and water is absorbed into the venturi from the water distributor. Please clean the water distributor.
5. The rubber tube in the cooler is broken. Please change a new one.
6. Unqualified installation of canvas soft connection and it can cause waterlogging in the canvas when raining, and then water comes into the venturi. Please adjust the canvas soft connection.
7. The waterproof-glue of the air pipe drops. And when raining, rain comes inside from the gap of the pipe. Please wipe the waterproof-glue again.

Leakage from metal water-inlet flexible-hose

• The flexible-hose is aged or broken and water leakages from it. Please change new flexible-hose.

Too much noise

1. The motor fastener is loose. Please tighten it.
2. The venturi cocks when the cooler is under transport or installation. Please adjust the venturi.
3. The motor bearings get stuck. Please change the bearings or motor.
4. Fan blades are loose. Please tighten them.
5. The air pipe is not installed correctly according the design. Please modify the installation.