然后我们关闭热水器的电力加热器的开关并将断路器打开。
Then open the “hot out” valve at the electric water heater and turn the breaker on.
并采用固态继电器SSR作为加热器的开关元件。
Adopted solid state relay (SSR) as the heater's switching component.
奋进号原订四月下旬发射，但是由于加热器中电路发生问题，被迫延期。工程人员更换了电路开关盒，并且安装了新线路。
Endeavour was set to launch in late April, but an electrical problem in a heater circuit forced a delay. Engineers replaced the switchbox and installed new wiring.
工程人员讲到，要耗费几天时间去更换和测试开关盒，以确保燃料管道加热器正常运转。 上周五，仅在发射前几小时，“奋进号”飞船的发射被取消了。
Engineers say it will take several days to replace and test that switch box to ensure fuel line heaters are functioning properly.
因此开关柜在备用和运行状态下，用户应保证加热器全天候投入！
Therefore, when switchgear is running or in standby mode, the user should ensure that the heater is always on!
压力罐装有压力表、压力开关、液位传感器和电加热器。
The pressure tank is provided with a pressure gauge, a pressure switch, a liquid level sensor and an electric heater.
这方面也将使长链加热器(可选)运作，而复印机是关掉的主要电源开关(例如，在自动关机模式)。
This connection will also allow the LCT heater (option) to operate while the copier is switched off with the main power switch (for example, in auto off mode).
美国航空航天局的工程师们最初不能确认加热器不愿运转是简单的恒温器故障还是电气开关箱内的更深层次问题。
Nasa engineers were not sure at first whether the heater's reluctance to operate was a simple thermostat failure or a more deep-seated issue in an electrical switchbox.
另一个方面可以做的加热器在纸盒单位将开关，而复印机操作。
Another connection can be done so the heaters in the paper tray unit will switch on and off while the copier is operating.
加热器由外壳，设于外壳内的加热丝，以及与加热丝依次连接的开关、变压器、电源插头构成。
The heater is composed of a housing, a heating filament arranged in the housing, and a switch, a transformer and a power plug sequentially connected with the heating filament.
但负荷电流1250a以上的开关柜在运行状态下，加热器可不投入。
Whereas if the switchgear load current is over 1250a is running, there is no necessary to keep the heater on.
循环水加热器通常由机身、电子加热器、测温感应器、流路开关装置、出水阀、加热系统控制器等构成。
The circulating water heater consists of frame, electronic heater, temperature sensor, flow channel switch, valve, heating controller and other parts.
循环水加热器通常由机身、电子加热器、测温感应器、流路开关装置、出水阀、加热系统控制器等构成。
The circulating water heater consists of frame, electronic heater, temperature sensor, flow channel switch, valve, heating controller and other parts.
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