6661AX-X-C - Operator’s Manual - 1” Diaphragm Pump

Oct 23, 2026

Uploaded by Himbo

Operator’s manual for model 6661AX-X-C covering operation, installation, and maintenance of a 1-inch, 1:1 ratio, non-metallic air-operated double diaphragm pump. Includes service kit references by air and fluid section, pump data with model weight classes, maximum pressures, flow rate, diaphragm displacement per cycle, temperature limits, noise level guidance, and general operating description of cycling and line-pressure behavior. Provides a model description chart defining manifold, diaphragm, seat, body, and ball material code options, plus operating and safety precautions addressing excessive air pressure and static spark hazards.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages8

Reading Time20 min

AccessFree to download

Service Kits

Pump Data

General Description

Model Description Chart

Fluid Section Service Kit Selection

Operating and Safety Precautions

Excessive Air Pressure

Static Spark

OPERATOR’S MANUAL 6661AX-X-C | INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
1”DIAPHRAGM PUMP
1:1 RATIO (NON-METALLIC) | RELEASED:
REVISED:
(REV: AB) | 9-11-89
3-18-16 | | --- | --- | --- | |
READ THIS MANUAL CAREFULLY BEFORE INSTALLING, OPERATING OR SERVICING THIS EQUIPMENT.
It is the responsibility of the employer to place this information in the hands of the operator. Keep for future reference. | | | SERVICE KITS | Refer to “Model Description Chart” to match the pump material options. 637118-C for Air Section repair (see page 6) .
637161-XX-C for Fluid Section repair (see page 4) . | | --- | | PUMP DATA | Models . . . . . . . see Model Description Chart for “-XXX”. Pump Type . . . . Non-Metallic, Air Operated, Double Diaphragm Material . . . . . . see Model Description Chart Weight 6661A3-, 1AF-, 1AJ-, 1AL- . . . . 20.25 lbs (9.19 kgs) 6661AP-, 1AR-, 1AS-, 1AT-. . . .20.25 lbs (9.19 kgs) 6661A4-, 1AG-, 1AK-, 1AN-. . . 28.5 lbs (12.93 kgs) 6661B3-, 1BF-, 1BJ-, 1BL-. . . . . 28.8 lbs (13.06 kgs 6661BP-, 1BR-, 1BS-, 1BT-. . . . .28.8 lbs (13.06 kgs) 6661B4-, 1BG-, 1BK-, 1BN-. . . . 37 lbs (16.78 kgs) Maximum Air Inlet Pressure. . . . . . . . . . . 120 p.s.i. (8.3 bar) Maximum Material Inlet Pressure. . . . . . 10 p.s.i. (0.69 bar) Maximum Outlet Pressure. . . . . . . . . . . . . 120 p.s.i. (8.3 bar) Maximum Flow Rate (flooded inlet). . 47 gpm (177.9 lpm) Displacement / Cycle @ 100p.s.i Standard Diaphragm. . . . . . . . . . . . . . . . . 0.17 gal (.64 lit) PTFE Composite Diaphragm. . . . . . . . . . 0.14 gal (.525 lit) Maximum Particle Size (semi-solids) . . . . 1/8”dia. (3 .2 mm) Maximum Temperature Limits Polypropylene. . . . . . . 35° to 175° F (2° to 79° C) PVDF (Kynar). . . . . . . 10° to 200° F (-12° to 93° C) Dimensional Data. . . . . . . . . . . see page 8 Noise Level @ 70 p.s.i. -60 cpm􀁣. . . . . 64.5 dB(A)􀁤 􀁣Tested with 93110 muffler installed. 􀁤 The pump sound pressure levels published here have been updated to an Equivalent Continuous Sound Level (LAeq) to meet the intent of ANSI S1.13-1971, CAGI-PNEUROP S5.1 using four microphone locations. NOTICE: All possible options are shown in the chart, however, certain combinations may not be recommended, consult a representative or the factory if you have questions concerning availability. GENERAL DESCRIPTION The ARO® Diaphragm Pump offers high volume delivery even at low air pressures and a broad range of material compatibility 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 create suction and positive fluid pressure in the fluid chambers, ball checks insure 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) andwill resume pumping as needed. | 6661XJ-XXX-C
6661XK-XXX-C
6661XL-XXX-C
6661XN-XXX-C
6661XS-XXX-C
6661XT-XXX-C | 6661XF-XXX-C
6661XG-XXX-C
6661XR-XXX-C | | --- | --- | | 6661X3-XXX-C
6661X4-XXX-C
6661XP-XXX-C Figure 1 | | MODEL DESCRIPTION CHART 6661 X X X X X-C FLUIDCAP/MANIFOLD MATERIAL 3-Colorless Polypropylene flange(3-piece manifold) 4-PVDC (Kynar ®) flange (3-piece manifold) F-Colorless polypropylene flange(one piece manifold) G-PVDF (Kynar) flange (one piece manifold) J-Colorless Polypropylene, N.P.T.(one piece manifold) K- PVDF (Kynar), N.P.T. (one piece manifold) L-Colorless Polypropylene, B.S. P.(one piece manifold) N-PVDF (Kynar), B.S.P. (one piece manifold) P-Grey Polypropylene flange (3-piece manifold) R-Gray Polypropylene flange (one piece manifold) S-Gray Polypropylene, N.P.T.(one piece manifold) T-Gray Polypropylene, B.S.P.(one piece manif

FAQs

What does the pump do when air pressure is applied?

Pump cycling begins as air pressure is applied. It continues pumping and keeps up with demand until maximum line pressure is reached.

What safety hazards are emphasized in the manual?

It warns about excessive air pressure that can cause personal injury, pump damage, or property damage, and about static spark that can cause explosion, severe injury, or death.

How are service kits selected for this pump?

Refer to the “Model Description Chart” to match pump material options, using 637118-C for air section repair and 637161-XX-C for fluid section repair.

Oct 23, 2026

Uploaded by Himbo