美国人家用电热水器
安装说明书和使用及维护指南(12)

加热元件的更换
Heating Element Replacement 

　　必须采用与本热水器额定电压/功率相同、款式相同的加热元件进行更换。有关参数可以在加热元件的法兰或接线盒上找到，或者在热水器的参数板上找到。
　　Replacement heating elements must be of the same style and voltage/wattage rating as the ones presently in the water heater. This information can be found on the flange or terminal block of the element or on the water heater data plate.

1. 关闭热水器电源。
   Shut off the electric power to the water heater.

2. 按照“排水与冲洗”中的有关说明排掉热水器内的水。
   Drain the water heater as directed under "Draining and Flushing".

3. 拆卸观察盖板。将加热元件外部的绝缘保温层拆卸下来。从温控器上拆卸塑料温控器盖，确保与温控器上固定点完全分离。
   Remove the access cover(s). Fold the insulation outward and away from the heater element(s). Remove the plastic thermostat cover from the thermostat(s) making sure to disengage the attachment point from the thermostat.

4. 断开加热元件上的电线（如图13）。使用1.5英寸的套筒扳手按反时针方向旋转拆卸加热元件上的螺丝。拆卸原有的垫圈。
   Disconnect the electric wires from the heating element (Figure 13). Remove the screw-in elements by turning the element counterclockwise with an 1-1/2 inch socket wrench. Remove the existing gasket.

1. 清洗垫圈与内胆接触的地方。如果是拆卸下部加热元件，需要清除累积在内胆底部的沉淀物。
   Clean the area where the gasket fits to the tank. If you are replacing the bottom element, remove the accumulated sediment on the bottom of the tank.

2. 确保所要替换的新加热元件具有正确的额定电压和功率。在新的加热元件上套上新的垫圈，插入热水器内胆（如图14）。按顺时针方向旋转紧固加热元件，直至安全牢靠为止。
   Make sure the replacement element has the correct voltage and wattage rating. Position the new gasket on the element and insert it into the water heater tank (Figure 14). Tighten the element by turning it clockwise until secure.

   
   

3. 

关闭排水阀。打开最近的热水水龙头，让内胆完全注满水。为了清除管道内任何剩余的空气和沉淀物，请在稳定出水后，让热水水龙头持续出水3分钟。

Close the drain valve. Open the nearest hot water faucet and allow the tank to fill completely with water. To purge the lines of any excess air and sediment, keep the hot water faucet open for 3 minutes after a constant flow of water is obtained.

检查加热元件周围是否有泄漏。

Check for leaks around the element(s).

连接加热元件上的电线。确保所有连接的电线牢固可靠。重新安装温控器塑料盖，确保固定点稳固连接在温控器上。

Connect the electric wires to the heater element. Make sure all wires are secure.Replace the plastic thermostat cover making sure the attachment points are engaged on the thermostat.

重新安装绝缘保温层和观察门。

Replace the insulation and access door(s).

确保热水器已经注满水。如果加热元件没有浸在水中就通上电流，将会造成加热元件的损坏。

Make certain the tank is filled with water. Applying electric current to heater elements not submerged in water will destroy them.

重新接通热水器的电源。

Restore the electric power supply to the water heater.