Wilkerson F28 User Manual
Warning, Safety guide, Caution

Installation & Service Instructions: 
84-009-000
Filter Models F18 and F28
ISSUED: September, 2007 
Supersedes: September, 2006
Doc. #84009000, EN# 070757, Rev. 5
4. Avoid using reducing bushings, couplings, etc., whenever possible
to	 install	 this	 product.	These	 devices	 restrict	 air	 flow	 and	 can	 affect	
performance.
5. Do not install this product in any application where the pressure drop
across the unit will exceed 20 psig (1.4 bar).
6. Maximum pressure rating is 150 psig (10.3 bar) for plastic bowl / bowl
guard	 assembly,	 and	 250	 psig	 (17.2	 bar)	 for	 metal	 bowl	 with	 sight	
gauge.		Temperature	range	is	32°F	to	125°F	(0°C	to	52°C)	for	plastic	
bowl/bowl	 guard	 assembly,	 and	 32°F	 to	 150°F	 (0°C	 to	 65.5°C)	 for	
metal	bowl	with	sight	gauge.
7. To install a drain line, use the following procedure:
a. On units with the MANUAL DRAIN, attach flexible tubing having
an I.D. of 3/16" (4.8 mm) to drain stem.
b. On units with AUTOMATIC FLOAT DRAIN, install using a 3/8 or
10mm instant tube fitting and flexible tubing.
NOTE: CONTAMINANTS REMOVED FROM THE COMPRESSED AIR 
SYSTEM MUST BE DISPOSED OF IN ACCORDANCE WITH LOCAL, 
STATE AND FEDERAL STANDARDS.
MAINTENANCE
DEPRESSURIZE SYSTEM
BEFORE ATTEMPTING SERVICE!
THIS UNIT MAY BE SERVICED WITHOUT REMOVING THE UNIT FROM 
THE COMPRESSED AIR LINE. UNIT SHOULD BE SERVICED AT LEAST 
EVERY SIX MONTHS.
1. Filter element replacement:
a. DEPRESSURIZE UNIT.
b. Remove bowl/bowl guard assembly by pushing up on bowl
	 assembly	 and	 turning	 counter-clockwise,	 viewed	 from	 below.	
	 Clean	inside	of	bowl	using	a	clean,	dry	cloth.	Inspect	plastic	bowl	
	 for	damage	and	replace	if	necessary.
c. Remove filter element by turning retainer counter-clockwise.
d. Remove filter element and discard.
e. Install a new filter and reassemble in reverse order.
2. Liquid level in the bowl must be kept below the level indicator line as
marked.	It	is	a	recommended	practice	to	drain	a	unit	equipped	with	the	
manual	 drain	 at	 least	 once	 during	 an	 eight	 (8)	 hour	 period.	 To	 do	 so,	
Bowl	guards	are	recommended	for	added	protection	of	polycarbonate	bowls	
where	chemical	attack	may	occasionally	occur.
!
WARNING
To avoid polycarbonate bowl rupture that can cause personal injury or 
property damage, do not exceed bowl pressure or temperature ratings. 
Polycarbonate bowls have a 150 PSIG pressure rating and a maximum 
temperature rating of 125°F.
WARNING
To avoid unpredictable system behavior that can cause personal injury 
and property damage:
• Disconnect electrical supply (when necessary) before installation,
servicing, or conversion.
• Disconnect air supply and depressurize all air lines connected to this
product before installation, servicing, or conversion.
• Operate within the manufacturer’s specified pressure, temperature,
and other conditions listed in these instructions.
• Medium must be moisture-free if ambient temperature is below
freezing.
• Service according to procedures listed in these instructions.
• Installation, service, and conversion of these products must be
performed by knowledgeable personnel who understand how 
pneumatic products are to be applied.
• After installation, servicing, or conversion, air and electrical supplies
(when necessary) should be connected and the product tested for 
proper function and leakage. If audible leakage is present, or the 
product does not operate properly, do not put into use.
• Warnings and specifications on the product should not be covered by
paint, etc. If masking is not possible, contact your local representative 
for replacement labels
.
WARNING
FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE 
PRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR RELATED ITEMS 
CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE.
This	 document	 and	 other	 information	 from	 The	 Company,	 its	 subsidiaries	
and	authorized	distributors	provide	product	and/or	system	options	for	further	
investigation	 by	 users	 having	 technical	 expertise.	 It	 is	 important	 that	 you	
analyze	all	aspects	of	your	application,	including	consequences	of	any	failure	
and	review	the	information	concerning	the	product	or	systems	in	the	current	
product	catalog.	Due	to	the	variety	of	operating	conditions	and	applications	for	
these	products	or	systems,	the	user,	through	its	own	analysis	and	testing,	is	
solely	responsible	for	making	the	final	selection	of	the	products	and	systems	
and	 assuring	 that	 all	 performance,	 safety	 and	 warning	 requirements	 of	 the	
application	are	met.
The	products	described	herein,	including	without	limitation,	product	features,	
specifications,	designs,	availability	and	pricing,	are	subject	to	change	by	The	
Company	and	its	subsidiaries	at	any	time	without	notice.
EXTRA COPIES OF THESE INSTRUCTIONS ARE AVAILABLE FOR 
INCLUSION IN EQUIPMENT / MAINTENANCE MANUALS THAT UTILIZE 
THESE PRODUCTS. CONTACT YOUR LOCAL REPRESENTATIVE.
!
!
INSTALLATION
1. Refer to WARNINGS prior to installation.
2. Install as close to the point of use as possible.
3. Unit must be installed with the flow in the direction of the flow arrow on
the body cover and with bowl down.
!
Safety Guide
For	more	complete	information	on	recommended	application	guidelines,	see	
the	Safety	Guide	section	of	Pneumatic	Division	catalogs	or	you	can	download	
the	Pneumatic Division Safety Guide	at:	www.wilkersoncorp.com
Pneumatic Division
Richland,	Michigan	49083
269-629-5000
CAUTION
Polycarbonate	bowls	and	sight	domes,	being	transparent	and	tough,	are	ideal	
for	use	with	Filters	and	Lubricators.	They	are	suitable	for	use	in	normal	industrial	
environments,	but	should	not	be	located	in	areas	where	they	could	be	subjected	
to	direct	sunlight,	an	impact	blow,	nor	temperatures	outside	of	the	rated	range.	
As	 with	 most	 plastics,	 some	 chemicals	 can	 cause	 damage.	 Polycarbonate	
bowls	and	sight	domes	should	not	be	exposed	to	chlorinated	hydro-carbons,	
ketones,	esters	and	certain	alcohols.	They	should	not	be	used	in	air	systems	
where	compressors	are	lubricated	with	fire-resistant	fluids	such	as	phosphate	
ester	and	di-ester	types.
Metal	 bowls	 are	 recommended	 where	 ambient	 and/or	 media	 conditions	 are	
not	compatible	with	polycarbonate	bowls.	Metal	bowls	resist	the	action	of	most	
such	solvents,	but	should	not	be	used	where	strong	acids	or	bases	are	present	
or	in	salt	laden	atmospheres.	Consult	the	factory	for	specific	recommendations	
where	these	conditions	exist.
TO CLEAN POLYCARBONATE BOWLS USE MILD SOAP AND WATER 
ONLY! DO NOT	 use	 cleansing	 agents	 such	 as	 acetone,	 benzene,	 carbon	
tetrachloride,	gasoline,	toluene,	etc.,	which	are	damaging	to	this	plastic.
!
