When performing maintenance or service procedures, pay attention to the following safety guidelines:

Observe all warning messages and precautionary statements presented in Safety Precautions.

WARNING

High Voltage

High voltages are present inside the device that could cause an electric shock.

Do not open the housing or remove protective panels unless specifically instructed to do so in this manual.

WARNING

Escape of Hazardous Substances from Flow Connections

Flow and capillary connections can be filled with substances that can pose health risks. Solvent can spray when capillaries burst, slip out of their fittings, or are not properly tightened or when capillary connections are otherwise open.

  • Wear appropriate protective equipment and follow good laboratory practice.
  • Before starting maintenance or repair procedures, flush out harmful substances with an appropriate solvent.

WARNING

Tilting Liquid Reservoirs

Liquids in the reservoirs on the solvent rack might contain harmful substances. Spilling of these substances can pose health and safety risks.

To prevent the reservoirs from tilting, be careful not to pull on the liquid lines when performing maintenance.

CAUTION

Spraying Solvent

Solvents can spray when under high pressure.

  • Stop the pump flow prior to opening the flow path.
  • Wait until the system pressure is down to zero.
  • When opening the flow path, wear appropriate protective equipment.

CAUTION

Hot Surfaces

Surfaces inside the device may become hot during operation. Touching hot parts might cause burns.

Allow hot surfaces to cool down before starting replacement or maintenance procedures.

CAUTION

Hydrostatic Pressure

Solvent may spill when you open the flow path. This is due to hydrostatic pressure in the system when the solvent reservoirs are located above the pump outlet. Before you loosen a connection in the flow path:

  • Turn off the pump flow and wait until the system pressure is down to zero.
  • Unscrew the caps of the solvent reservoirs and remove the solvent lines together with the caps from the reservoirs.
  • Empty the solvent lines. Refer to the Operating Manual for the pump.
  • Retighten the reservoir caps.

CAUTION

Electric Shock or Damage to the Device

After the power to the device is turned off, the device is still energized as long as the power cord is connected. Repair work on the device while the device is connected to power could lead to personal injury.

  • Always unplug the power cord before starting repair work inside the device.
  • If you were instructed to remove any housing covers or panels, do not connect the power cord to the device while the cover or panels are removed.

NOTICE

Detector Gas Flow and Pump Flow

Improper handling of detector gas flow and pump flow start and stop can damage the detector. Observe the respective order of steps:

  • To start detector gas flow and pump flow: Turn on the detector gas flow first, wait at least 5 minutes and only then turn on the pump flow.
  • To stop pump flow and detector gas flow: Turn off the pump flow first, wait at least 5 minutes and only then turn off the detector gas flow. During the waiting period, the drain pump drains any remaining mobile phase to waste.