Sullair FH Series, User & Service Manual

Page: 17 / 48

SECTION 2 FILTERS AND MOISTURE SEPARATORS
17
2.9 MAINTENANCE & DAILY
OPERATION
(See Figure 2-4 and Figure 2-5 )
DAILY: Check the function of the installed drain (if
applicable) and relief valve to ensure they are
operating properly.
DRAIN INSPECTION, CLEANING OR
REPLACEMENT
1. For external drains, close drain isolation
valve & DEPRESSURIZE drain by opening
vent valve.
2. Remove drain(s) & clean or replace as
necessary according to the respective drain
manual.
3. Reattach the drain(s). Ensure fitted correctly
then slowly open the isolation valve to re-
pressurize.
F/H Coalescing and Particulate Type Elements :
Filter performance will decrease dramatically after
approximately 1 year due to deterioration of the
fragile fibers of the filtration media caused by the
acidicity of the condensate & bombardment by fast
moving particles. This most often occurs with little or
no increase in differential pressure. Filter elements
MUST be changed annually regardless of differential
pressure.
More frequent replacement is
recommended if differential pressure exceeds 5 psid
—which may suggests blockage by excessive
contamination.
Activated Carbon filter element life is directly
dependant upon the temperature of the air it is
filtering. Activated Carbon elements are designed to
provide 1000 hours of service at 70
º
F (21ºC). At
cooler temperatures, more oil is in liquid form (and is
therefore removed by the upstream coalescing filter)
and less oil is in vapour form, so element life will be
longer. At warmer temperatures, more oil is in vapour
form and therefore the element life will be shorter– so
always use carbon filters at the lowest temperature
possible. Maximum recommended operating
temperature is 86
º
F (30ºC). If possible monitor
downstream oil vapour content, and simply replace
elements when oil vapour exceeds desired levels.
MIST ELIMINATOR : Includes a true air/oil separator
element with coarse fibers designed to slow
deterioration. Element should be changed every 5
years or when the pressure drop of exceeds 1 psid.
WARNING
Filter housing must be fully depressurized
before attempting to install dp gauge, drain,
replace elements or perform any mainte-
nance. Failure to install properly may cause
danger or injury to persons or damage to
property.