Electrical Hazards

Electrical Precautions

  • The possibility of serious or fatal injury from electrical shock exists when servicing a refrigeration unit. Extreme care must be used when working with a refrigeration unit that is connected to its power source.

  • Extreme care must be used even if the unit is not running. Lethal voltage potentials can exist at the unit power cord, inside the control box, inside any high voltage junction box, at the motors and within the wiring harnesses.

  • In general, disconnect the units power cord before repairing or changing any electrical components.

  • Even though the controller is turned off, one of the phases is still live and represents a potential danger of electrocution.

  • Disconnect power at Main Circuit Breaker and remove power plug from the high voltage socket. Lock-out-tag out as required.

上级主题： 安全预防措施

High Voltage

    危险
  • Hazardous Voltage
  • Lethal amounts of voltage are present in some electrical circuits. Use extreme care when working on the refrigeration unit. If there is a risk of energized electrical contact, arc, or flash, technicians MUST put on all PPE in accordance with OSHA, NFPA 70E, or other local, state, or country-specific requirements for arc flash protection PRIOR to servicing the unit. NEVER PERFORM ANY SWITCHING, DISCONNECTING, OR VOLTAGE TESTING WITHOUT PROPER ELECTRICAL PPE AND ARC FLASHING CLOTHING. ELECTRICAL METERS AND EQUIPMENT MUST BE PROPERLY RATED FOR INTENDED VOLTAGE.
    警告
  • 危险电压
  • 将所有的电线和连接都视为具有高压，除非电表和接线图显示无高压。 只能使用带有绝缘手柄的工具。 切勿将未绝缘的金属工具靠近外露的带电导体。 如果存在通电、电弧或闪光的风险，技术人员必须在维修设备之前按照 OSHA、NFPA 70E 或其他当地、州或国家/地区特定的电弧闪光保护要求穿戴所有 PPE。 切勿在没有合适的电气 PPE 和防电弧服装的情况下进行任何开关、断开或电压测试。 电表和设备的额定电压必须正确。
    警告
  • Hazardous Voltage
  • Never work alone on high voltage circuits in the refrigeration unit. Another person should be nearby to shut off the unit and provide aid in the event of an accident. If there is a risk of energized electrical contact, arc, or flash, technicians MUST put on all PPE in accordance with OSHA, NFPA 70E, or other local, state, or country-specific requirements for arc flash protection PRIOR to servicing the unit. NEVER PERFORM ANY SWITCHING, DISCONNECTING, OR VOLTAGE TESTING WITHOUT PROPER ELECTRICAL PPE AND ARC FLASHING CLOTHING. ELECTRICAL METERS AND EQUIPMENT MUST BE PROPERLY RATED FOR INTENDED VOLTAGE.
    警告
  • Personal Protective Equipment (PPE) Required
  • In the event of an electrical accident, all required PPE should be near the work area in accordance with OSHA, NFPE 70E, or other local, state, or country-specific requirements for a Category 3 risk.
    警告
  • 危险电压
  • 在连接或断开电源插头之前，必须将设备的开关设置为 Off（关）。 绝对不要尝试拔下电源插头来停止设备。
    警告
  • 受伤危险
  • 将电源插头接到电源之前，请确保电源插头干净而且干燥。
    警告
  • Risk of Injury
  • Do not make rapid moves when working on high voltage circuits in the refrigeration unit. Do not grab for falling tools because you might accidentally touch a high voltage source.

Low Voltage

    警告
  • 带电电气组件
  • 控制电路为低电压（24 Vac 和 12 Vad ） 我们认为这种电压不会造成危险。 但是，如果因接地而短路，则出现的大电流（高于 30 Amp）能引起严重的灼伤。 不要佩戴首饰、手表或戒指。 这些物品可能使电路短路并严重灼伤佩戴人。