Ingersoll-Rand PD30R-XXX-XXX-C General Description Maintenance, AIR and Lube Requirements

GENERAL DESCRIPTION MAINTENANCE

The ARO diaphragm pump offers high volume delivery even at low air pressure and a broad range of material compatibility options are available. Refer to the model and option chart. ARO pumps feature stall resistant design, modular air motor / fluid sections.

Air operated double diaphragm pumps utilize a pressure differen- tial in the air chambers to alternately create suction and a positive fluid pressure in the fluid chambers, valve checks insure a positive flow of fluid.

Pump cycling will begin as air pressure is applied and will continue to pump and keep up with the demand. It will build and maintain line pressure and will stop cycling once maximum line pressure is reached (dispensing device closed) and will resume pumping as needed.

AIR AND LUBE REQUIREMENTS

WARNING EXCESSIVE AIR PRESSURE. Can cause pump dam- age, personal injury or property damage.

yA filter capable of filtering out particles larger than 50 microns should be used on the air supply. There is no lubrication re- quired other than the “O” ring lubricant which is applied during assembly or repair.

yIf lubricated air is present, make sure that it is compatible with the “O” rings and seals in the air motor section of the pump.

OPERATING INSTRUCTIONS

yAlways flush the pump with a solvent compatible with the ma- terial being pumped if the material being pumped is subject to “setting up” when not in use for a period of time.

yDisconnect the air supply from the pump if it is to be inactive for a few hours.

yThe outlet material volume is governed not only by the air sup- ply, 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.

yWhen the diaphragm pump is used in a forced-feed (flooded inlet) situation, it is recommended that a “check valve” be in- stalled at the air inlet.

ySecure the diaphragm pump legs to a suitable surface to insure against damage by vibration.

Refer to the part views and descriptions as provided on pages 4 through 7 for parts identification and service kit information.

yCertain ARO “Smart Parts” are indicated which should be avail- able for fast repair and reduction of down time.

yService 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 Op- tions.

yProvide a clean work surface to protect sensitive internal mov- ing parts from contamination from dirt and foreign matter dur- ing service disassembly and reassembly.

yKeep good records of service activity and include the pump in preventive maintenance program.

yBefore disassembling, empty captured material in the outlet manifold by turning the pump upside down to drain material from the pump.

FLUID SECTION DISASSEMBLY

1.Remove (61) outlet manifold and (60) inlet manifold.

2.Remove (22) balls, (19) “O” rings (if applicable) and (21) seats.

3.Remove (15) fluid caps.

NOTE: Only PTFE 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 (14) screw, (6) diaphragm washer, (7) or (7 / 8) dia- phragms, (5) backup washer and (196) cushion.

NOTE: Do not scratch or mar the surface of (1) diaphragm rod.

FLUID SECTION REASSEMBLY

SERVICE NOTE: ARO pn 204214-T diaphragm assembly tool is rec- ommended for use when reassembling the pump.

yReassemble in reverse order. Refer to the torque requirements on page 5.

yClean and inspect all parts. Replace worn or damaged parts with new parts as required.

yLubricate (1) diaphragm rod and (144) “U” cups with Lubriplate® FML-2 grease (94276 grease packet is included in service kit).

yBe certain the diaphragm assembly bottoms out on the (1) rod, back off PTFE diaphragm assembly far enough to align holes.

yFor models with PTFE diaphragms: Item (8) Santoprene dia- phragm is installed with the side marked “AIR SIDE” towards the pump center body. Install the (7) PTFE diaphragm with the side marked “FLUID SIDE” towards the (15) fluid cap.

yRe-check torque settings after the pump has been re-started and run a while.

y Hytrel® and Viton® are registered trademarks of the DuPont Company y Loctite® is a registered trademark of Henkel Loctite Corporation y Kynar® is a registered trademark of Arkema Inc. y

y Santoprene® is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P. y ARO® is a registered trademark of Ingersoll-Rand Company y y Lubriplate® is a registered trademark of Lubriplate Division (Fiske Brothers Refining Company) y 262™, 271™ and 572™ are trademarks of Henkel Loctite Corporation y

y Hastelloy® is a registered trademark of Haynes International, Inc. y

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