ARO 66610X-X-C Series Panduan Operator - Halaman 3

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GENERAL DESCRIPTION

The ARO diaphragm pump offers high volume delivery even

at low air pressure and a broad range of material compati-

bility options 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 differential in the air chambers to alternately cre-

ate suction and positive fluid pressure in the fluid chambers,

valve checks ensure a positive flow of fluid. Pump cycling will

begin as air pressure is applied and it 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

EXCESSIVE AIR PRESSURE. Can cause

WARNING

personal

injury, pump damage or property damage.

A filter capable of filtering out particles larger than 50 mi-

crons should be used on the air supply. There is no lubrication

required other than the "O" ring lubricant which is applied

during assembly or repair.

If 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

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.

Disconnect the air supply from the pump if it is to be in-

active for a few hours.

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 co

lapse.

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.

Secure the diaphragm pump legs to a suitable surface to

ensure against damage by vibration.

MAINTENANCE

Refer to the part views and descriptions as provided on pages

4 through 7 for parts identification and service kit information.

Certain ARO "Smart Parts" are indicated which should be

available for fast repair and reduction of down time.

Service kits are divided to service two separate dia-

phragm pump functions: 1. AIR SECTION, 2. FLUID SEC-

TION. The FLUID SECTION is divided further to match

typical part MATERIAL OPTIONS.

Provide a clean work surface to protect sensitive internal

moving parts from contamination from dirt and foreign

matter during service disassembly and reassembly.

Keep good records of service activity and include pump

in preventive maintenance program.

Before disassembling, empty captured material in the

outlet manifold by turning the pump upside down to

drain material from the pump.

Santoprene

is a registered trademark of Monsanto Company, licensed to Advanced Elastomer Systems, L.P. Key-Lube

66610X-X-C (en)

Viton

and Hytrel

are registered trademarks of the DuPont

FLUID SECTION DISASSEMBLY

1. Remove top manifold(s).

2. Remove (22) balls, (19) "O" rings and (21) seats.

3. Remove (15) fluid caps.

NOTE: Only PTFE diaphragm models use a primary dia-

phragm (7) and a backup diaphragm (8). Refer to the auxilia-

ry view in the Fluid Section

Illustration.

For 6661XX-XX6-C:

4. Remove (7) diaphragm, (5) washers and (30) shims.

For other models:

4. Remove the (14) screws, (6) washers, (7) or (7 / 8) dia-

phragms and (5) washers.

5. Remove (3) "O" rings.

FLUID SECTION REASSEMBLY

Reassemble in reverse order.

Clean and inspect all parts. Replace worn or damaged

parts with new parts as required.

Lubricate (1) diaphragm rod and (2) "O" ring with Key-

Lube "O" ring lube.

Use ARO pn / 98931-T bullet (installation tool) to aid in

installation of (2) "O" ring on (1) diaphragm rod.

For 6661XX-XX6-C:

Attach a regulated airline to the pump inlet; gradually

increasing the air pressure (6-8 psi) to check which side of

the pump with air blowing out, and then shut down the

air supplier.

Fasten (7) diaphragm with (5) washer into (1) diaphragm

rod, and insert them into (101) Center body from the

chamber identified with blowing air in the previous step.

Install (15) fluid cap.

Thread the other side of (7) diaphragm with (5) washer

into (1) diaphragm rod, but do not tighten it.

Record the angle for the misalignment between (7) dia-

phragm hole and (101) center body holes, then unthread

the (7) diaphragm and place proper Qty. of (30) shims

between (5) washer and (1) diaphragm rod.

Attach a regulated airline to the pump inlet, gradually

increasing the air pressure (6-8 psi) until the diaphragm

shift to the other site, shut down the air supply.

Install the second (15) fluid cap.

NOTE: For details, refer to service kits manual 48495949.

For other models:

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.

For models with PTFE diaphragms: Item (8) Santoprene

diaphragm is installed with the side marked "AIR SIDE" to-

wards the pump center body. Install the PTFE diaphragm

with the side marked "FLUID SIDE" towards the fluid cap.

Re-check torque settings after pump has been re-started

and run a while.

Company. Kynar

is a registered trademark of Penwell Corp

is a registered trademark of Key Industries

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