The turbocharged, four-stroke, diesel generator set drive engines on your OSV are protected with dry-type air intake filters. The filter element condition can be evaluated by attaching a water manometer to measure the vacuum in the air duct between the air intake filter and the turbocharger blower inlet. Assuming that the filter condition is evaluated at rated engine rpm under full load, what statement is true if the restriction associated with a clean, properly sealing filter element is 10" of water column (negative)?

Question

Accepted Answer

A reading of 15" of water column (negative) indicates that the filter element is restricted with dust, and a reading of 5" of water column (negative) indicates that the filter element is being bypassed due to an improper seal.

Answer

A reading of 5" of water column (negative) could indicate that the filter element is restricted with dust or that the filter element is being bypassed due to an improper seal. Either condition is equally likely to result in this reading.

Answer

A reading of 15" of water column (negative) could indicate that the filter element is restricted with dust or that the filter element is being bypassed due to an improper seal. Either condition is equally likely to result in this reading.

Answer

A reading of 5" of water column (negative) indicates that the filter element is restricted with dust, and a reading of 15" of water column (negative) indicates that the filter element is being bypassed due to an improper seal.