Electrical Hazard

    Danger
  • Hazardous Voltage
  • When servicing or repairing a temperature control unit, the possibility of serious or even fatal injury from electrical shock exists. Extreme care must be used when working with a refrigeration unit that is connected to a source of operating power, even if the unit is not operating. Lethal voltage potentials can exist at the unit power cord, inside the control box, at the motors and within the wiring harnesses.
    Warning
  • Risk of Injury
  • On SmartPower electric standby equipped units, always turn off the external standby power source before handling, connecting, or disconnecting the power cable. Always disconnect the standby power cord before servicing the unit.

    Warning
  • Hazardous Voltage
  • The unit On/Off switch must be turned Off before connecting or disconnecting the standby power plug. Never attempt to stop the unit by disconnecting the power plug.

    Warning
  • Risk of Injury
  • The unit power plug must be clean and dry before connecting it to a power source.

    Warning
  • Hazardous Voltage
  • A certified electrician should verify that the proper standby power requirements are being supplied before connecting to a new power source.

Parent topic: Safety Precautions

Low Voltage

Important Some SR-3 components are connected directly to un-switched battery power. All connections and circuits labeled with a 2 prefix are connected directly to battery power. Always disconnect the battery before servicing the unit.
    Warning
  • Live Electrical Components
  • Control circuits used in refrigeration units are low voltage (12 to 48 Vdc). However, the large amount of amperage available can cause severe burns if accidentally shorted to ground with metal objects, such as tools. Do not wear jewelry, watches, or rings because they increase the risk of shorting out electrical circuits and damaging equipment or causing severe burns. 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.