Gardner Denver EAH99C Operating And Service Manual page 61

Oil carryover malfunctions of the oil separator are usually due to using elements too long, heavy dirt or
varnish deposits caused by inadequate air filter service, use of improper oil or using oil too long for
existing conditions. A ruptured or collapsed separator element is usually due to heavy dirt or varnish
buildup in the filtering material. Excessive tilt angle of the unit will also hamper separation and cause oil
carryover.
Oil separator element life cannot be predicted; it will vary greatly depending on the conditions of
operation, the quality of the oil used and the maintenance of the oil and air filters. The condition of the
separator can be determined by pressure differential gauging or by inspection.
Pressure Differential Gauging - The "CHANGE SEPARATOR" advisory will flash when the pressure
differential across the oil separator reaches approximately 8 psid (.55 bar). Replace the oil separator
element at this time. If ignored, the unit will shut down and the advisory will illuminate steadily when the
pressure differential reaches 15 psid (1 bar).
Using an oil separator element at excessive pressure differential can cause
damage to equipment. Replace the separator when the "Change Separator"
advisory appears.
A sudden drop of zero pressure differential or sudden heavy oil carryover may
indicate a ruptured element.
Inspection - After removal of separator element, shine a light inside the element to reveal areas of heavy
dirt or varnish deposits or breaks (ruptures) in the element media.
NOTICE
13-9-663 Page 60