The Pump Has Failed To Achieve The Specified Performance (Has Failed To Reach Ultimate Vacuum) - Edwards nRVi Instruction Manual

Cause The outlet pipeline or the outlet filter (if fitted) is blocked.
Remedy Clear exhaust path (replace or clear exhaust filter).
Cause The pump temperature is below 12 °C.
Remedy Warm pump to operate ambient temperature range (12 °C ~ 40 °C).
Cause The oil is too viscous or it is contaminated.
Remedy Replace the oil.
Cause The pump has seized after long storage.
Remedy Fill the pump with oil, close the inlet port and check the priming of the oil.
Cause The pump has been left to stand after contaminants have been pumped and has
seized.
Remedy Clean the pump and replace the oil.
Fault The pump has failed to achieve the specified performance (has failed to reach
ultimate vacuum)
Cause The pressure measurement technique or gauge head is unsuitable or gives an
incorrect indication of pressure. For example, a contaminated Pirani gauge can
indicate a pressure which is several times higher than the actual pressure in the
system.
Remedy Replace the measurement technique or gauge head.
Cause The pump has been filled with the wrong type of oil.
Remedy Replace the oil with the correct type.
Cause There is a leak in the vacuum system.
Remedy Locate and repair the leak.
Cause The mode selector and gas ballast control are set incorrectly.
Remedy Set the mode selector to the correct position.
Cause The oil level is below the minimum allowable level.
Remedy Fill the pump with oil above the minimum allowable level.
Cause The oil is contaminated.
Remedy Replace the oil.
Cause The vacuum fittings are dirty or damaged.
Remedy Clean or replace the vacuum fittings.
A65901880_D - Fault finding
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