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OPERATOR’S MANUAL 66M2X0-XXX-C
RELEASED: 10-22-08
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
REVISED: 2-16-09
(REV. 03)
2" DIAPHRAGM PUMP
1:1 RATIO (METALLIC)
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.
The original language of this manual is English.
SERVICE KITS
Refer to Model Description Chart to match the pump material o
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OPERATING AND SAFETY PRECAUTIONS READ, UNDERSTAND AND FOLLOW THIS INFORMATION TO AVOID INJURY AND PROPERTY DAMAGE. jury or property damage. Do not attempt to return a pump EXCESSIVE AIR PRESSURE HAZARDOUS MATERIALS to the factory or service center that contains hazardous STATIC SPARK HAZARDOUS PRESSURE material. Safe handling practices must comply with local and national laws and safety code requirements. Obtain Material Safety Data Sheets on all materials from WARNING EXCESSIVE AIR PRESSUR
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GENERAL DESCRIPTION MAINTENANCE The ARO diaphragm pump off ers high volume delivery even at low Refer to the part views and descriptions as provided on pages 4 air pressure and a broad range of material compatibility options are through 7 for parts identifi cation and service kit information. available. Refer to the model and option chart. ARO pumps feature Certain ARO “Smart Parts” are indicated which should be avail- stall resistant design, modular air motor / fl uid sections. able for fast
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PARTS LIST / 66M2X0-XXX-C FLUID SECTION 637468-XX Fluid section service kit includes: Balls (see Ball Option, refer to -XX in chart below), Diaphragms (see Diaphragm Option, refer to -XX in chart below) and items 2 and 19 (listed below) plus 93706-1 Key-Lube grease packet (page 6). MATERIAL CODE SEAT OPTIONS BALL OPTIONS [A] = Aluminum 66M2X0-XXX-C 66M2X0-XXX-C [B] = Nitrile (2” diameter) [C] = Carbon Steel “21” “22” [Co] = Copper -XXX Seat Qty Mtl -XXX Ball Qty Mtl [E] = E.P.R. [H] = Hytrel
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PARTS LIST / 66M2X0-XXX-C FLUID SECTION COLOR CODE 3 1 Diaphragm Ball Material Color Color 5 8 Hytrel Cream Cream Nitrile Black Red (•) Santoprene Tan Tan (•) Dot 910 61 7 6 FOR THE AIR MO- 26 2 4 TOR SECTION, SEE PAGES 6 & 7. 281 Torque Sequence 280 57 14 22 21 19 27 29 2 1 183 15 188 69 22 182 21 60 19 26 186 188 184 Figure 2 182 187 186 185 ASSEMBLY TORQUE REQUIREMENTS NOTE: DO NOT OVERTIGHTEN FASTENERS. ALL FASTENERS ARE METRIC. (14) screw, 65 - 70 ft lbs (88.1 - 94.9 Nm
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PARTS LIST / 66M2X0-XXX-C AIR MOTOR SECTION Indicates parts included in 637434 air section service kit. AIR MOTOR PARTS Item Description (size) Qty Part No. Mtl Item Description (size) Qty Part No. Mtl 101 Motor Body (1) 96374 [A] 121 Sleeve Bushing (2) 98723-2 [Bz] (1/16” x 1-1/4” o.d.) (3/32” x 9/16” o.d.) 102 “O” Ring (2) Y325-24 [B] 122 “O” Ring (2) 94820 [U] 103 Sleeve (1) 94528 [D] 123 Screw (#8 - 32 x 3/8”) (4) Y154-41 [C] (1-5/32” i.d.) (3/4 - 14 PTF x 17/32”) 104 Retaining Ring (
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PARTS LIST / 66M2X0-XXX-C AIR MOTOR SECTION IMPORTANT 111 BE CERTAIN TO ORIENT (115) 105 SPACER LEGS AWAY FROM BLOCK- 114 ING INTERNAL PORTS WHEN REASSEMBLING AIR SECTION. 115 116 107 114 117 113 112 MAJOR VALVE See cross section detail, fi gure 4. 201 282 127 Figure 3 101 128 126 104 121 197 123 102 108 107 103 105 104 109 PILOT VALVE 110 119 198 121 43 123 197 118 MAJOR VALVE CROSS SECTION DETAIL 120 122 109 110 112 114 111 115 113 116 ASSEMBLY
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TROUBLE SHOOTING Product discharged from exhaust outlet. Low output volume, erratic fl ow or no fl ow. Check for diaphragm rupture. Check air supply. Check tightness of (14) diaphragm screw. Check for plugged outlet hose. Check for kinked (restrictive) outlet material hose. Air bubbles in product discharge. Check for kinked (restrictive) or collapsed inlet material hose. Check connections of suction plumbing. Check for pump cavitation - suction pipe should be sized at Check “O” rings be
