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AIR
AND LUBE REQUIREMENTS
MAINTENANCE
PAGE 3 OF 8
6662XX-X-C
MODEL
DESCRIPTION CHART
WARNING EXCESSIVE AIR PRESSURE. Can cause pump
damage, personal injury or property damage.
S A filter capable of filtering out particles larger than 50 microns
should be used on the air supply. In most applications there is no
lubrication required other than the ``O"ring lubricant which is apĆ
plied during assembly or repair.
S When lubricated air is necessary, supply the air lubricator with a
good grade of SAE 90 wt. non-detergent oil and set the lubricator
to a rate not to exceed one drop per minute.
OPERATING INSTRUCTIONS
S Always flush the pump with a solvent compatible with the material
being pumped if the material being pumped is subject to "setting
up" when not in use for a period of time.
S Disconnect the air supply from the pump if it is to be inactive for a
few hours.
S The outlet material volume is governed not only by the air supply
but also by the material supply available at the inlet. The material
supply tubing should not be too small or restrictive. Be sure not to
use hose which might collapse.
S When the diaphragm pump is used in a forced-feed (flooded inlet)
situation it is recommended that a``Check Valve" be installed at the
air inlet.
S Secure the diaphragm pump legs to a suitable surface to insure
against damage by vibration.
P
ARTS AND SER
VICE KITS
Refer to the part views and descriptions as provided on page 4
through 7 for parts identification and Service Kit information.
S Certain ARO ``Smart Parts" are indicated which should be availĆ
able for fast repair and reduction of down time.
S Service kits are divided to service two separate diaphragm pump
functions: 1. AIR SECTION, 2. FLUID SECTION. The FLUID
SECTION is divided further to match typical part MATERIAL OPĆ
TIONS.
S Provide a clean work surface to protect sensitive internal moving
parts from contamination from dirt and foreign matter during serĆ
vice disassembly and reassembly.
S Keep good records of service activity and include pump in prevenĆ
tive maintenance program.
S Before disassembling empty captured material in the outlet manĆ
ifold by turning the pump upside down to drain material from the
pump.
FLUID SECTION DISASSEMBL
Y
1. Remove top manifold(s).
2. Remove (22) balls, (19), (33) ``O" Rings, (21) seats.
3. Remove (15) fluid caps.
NOTE:Only Teflon diaphragm models use a primary diaphragm (7) and
a backup diaphragm (8). Refer to the auxiliary view in the Fluid Section
illustration.
4. Remove the (6) nut, (7) or (7/8) diaphragms, and (5) washers.
5. Remove (3), (4) ``O"Rings.
NOTE: Do not scratch or mar the surface of (1) diaphragm rod.
FLUID SECTION REASSEMBL
Y
S Reassemble in reverse order.
S Clean and inspect all parts. Replace worn or damaged parts with
new parts as required.
S Lubricate diaphragm rod (1) and (2) ``O"ring with Key-LubeR
``O"ring lube or equivalent.
S Use ARO PN/98930-T Bullet (installation tool) to aid in installation
of ``O"ring (2) on diaphragm rod (1).
S Be certain (7) or (7/8) diaphragm(s) align properly with (15) fluid
caps before making final torque adjustments on bolt and nuts to
avoid twisting the diaphragm.
S For models with Teflon diaphragms: Item (8) Santoprene diaĆ
phragm is installed with the side marked "AIR SIDE" towards the
pump center body. Install the Teflon Diaphragm with the side
marked "FLUID SIDE" towards the fluid cap.
S Re-check torque settings after pump has been re-started and run
a while.
666 X X X – X X X – C
FLUID CAPS &
MANIFOLD MAT’L
BALL MAT’L DIAPHRAGM
4 T.F.E (TEFLON)R
6 ACETAL
8 POLYURETHANE
2 STAINLESSSTEEL
3 POLYPROPYLENE
4 PVDF (KYNARr)
8 HARDENED 440
STAINLESS STEEL
0 ALUMINUM
1 ST' STEEL
2 CAST IRON
SEAT MAT’L
200 - [STD] 20A - [S ST'L]
201 - [STD] 20B - [S ST'L]
202 - [STD] 20C - [S ST'L]
(NPT) - ALUMINUM)
1 NEOPRENE
2 BUNA N
3 VITON R
4 T.F.E.(TEFLON)R
5 E.P.R.
9 HYTREL
R
B SANTOPRENER
(2’’ THREAD)
BODY MAT’L–[HWR]
(REV)
210 - [STD] 21A - [S ST'L]
211 - [STD] 21B - [S ST'L]
212 - [STD] 21C - [S ST'L]
(NPT) - CAST IRON)
220 - [STD] 22A - [S ST'L]
221 - [STD] 22B - [S ST'L]
222 - [STD] 22C - [S ST'L]
(BSP) - ALUMINUM)
230 - [STD] 23A - [S ST'L]
231 - [STD] 23B - [S ST'L]
232 - [STD] 23C - [S ST'L]
(BSP) - CAST IRON)
637124 - X X
Ball Material
Diaphragm Material
EXAMPLE:Model#666200-362-C
Fluid Section Service Kit is 637124-62
666200 - X X X -C
FLUID SECTION SERVICE KIT SELECTION
S VitonR, TeflonR, andHytrelR aretrademarks ofthe DuPontCompany, S KynarR is atrademark of PenwaltCorp,
S SantopreneRis aregistered trademarkof Monsanto Company, licensedto AdvancedElastomerSystems,L.P. S Key-Lubeis atrademark ofKey Industries.