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OPERATOR’S MANUAL 6661HX-XXX-C
RELEASED: 12-18-06
INCLUDING: OPERATION, INSTALLATION & MAINTENANCE
REVISED: 5-20-10
(REV. 04)
1" DIAPHRAGM PUMP
CSA CERTIFIED, 1:1 RATIO, METALLIC
INTENDED FOR USE WITH SWEET NATURAL GAS
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 mate-
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OPERATING AND SAFETY PRECAUTIONS READ, UNDERSTAND AND FOLLOW THIS INFORMATION TO AVOID INJURY AND PROPERTY DAMAGE. requirements. EXCESSIVE GAS PRESSURE HAZARDOUS MATERIALS Obtain Material Safety Data Sheets on all materials STATIC SPARK HAZARDOUS PRESSURE from the supplier for proper handling instructions. WARNING EXPLOSION HAZARD. Models containing alu- minum wetted parts cannot be used with 1,1,1-trichlo- WARNING EXCESSIVE GAS PRESSURE. Can cause per- roethane, methylene chloride or other ha
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GENERAL DESCRIPTION MAINTENANCE The ARO natural gas powered diaphragm pump off ers high Certain ARO “Smart Parts” are indicated which should be volume delivery even at low gas pressure. Natural gas pow- available for fast repair and reduction of down time. ered diaphragm pumps move fluids such as crude oil, salt Provide a clean work surface to protect sensitive internal water, drilling mud, lubrication oils, glycol, caustic liquids and moving parts from contamination from dirt and foreign a
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PARTS LIST / 6661HX-XXX-C FLUID SECTION 637119-C9-C fl uid section service kits include: Balls (item 22), diaphragms (item 7) plus items 2, 3, 19 and 93706-1 Key-Lube grease (page 6). PARTS LIST (size) (size) Item Description Qty Part No. [Mtl] Item Description Qty Part No. [Mtl] 1 Rod (1) 98724-1 [C] 16 Manifold (2) 92001 [A] (3/32” x 3/4” o.d.) (3/32” x 1-9/16” o.d.) 2 “O” Ring (1) Y330-113 [B] 19 “O” Ring (4) Y327-126 [V] (1/16” x 5/8” o.d.) 3 “O” Ring (4) Y328-14 [T] 21 Seat (4) 92008
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PARTS LIST / 6661HX-XXX-C FLUID SECTION 3 1 FOR THE GAS MO- TOR SECTION, SEE 5 8 PAGES 6 & 7. 7 6 2 4 26 Torque Sequence 16 2 1 3 5 7 6 3 9 14 22 19 21 15 29 22 16 21 26 19 Figure 2 TORQUE REQUIREMENTS NOTE: DO NOT OVERTIGHTEN FASTENERS. (14) Bolt, 25 - 30 ft. lbs (33.9 - 40.7 Nm). (26) Bolt, 120 - 140 in. lbs (13.6 - 15.8 Nm). (29) Nut, 120 - 140 in. lbs (13.6 - 15.8 Nm). Gas side Fluid side LUBRICATION / SEALANTS Apply Loctite® 271™ to threads. Apply Key-Lube grease (937
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PARTS LIST / 6661HX-XXX-C GAS MOTOR SECTION Indicates parts included in 637118-C gas section repair kit. GAS MOTOR PARTS LIST (size) (size) Item Description (Qty) Part No. [Mtl] Item Description (Qty) Part No. [Mtl] 101 Motor Body (1) 94743 [A] 117 Gasket (1) 92004 [B/Ny] (1/16” x 1” o.d.) 102 “O” Ring (2) Y325-20 [B] 118 Pilot Rod (1) 93309-1 [C] (1/8” x 3/4” o.d.) 103 Sleeve (1) 94527 [D] 119 “O” Ring (4) 93075 [U] (0.925 i.d.) 104 Retaining Ring (2) Y145-25 [C] 120 Spacer (3) 115959
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PARTS LIST / 6661HX-XXX-C GAS MOTOR SECTION IMPORTANT BE CERTAIN TO ORIENT (115) SPACER LEGS AWAY FROM BLOCKING INTERNAL PORTS 117 WHEN REASSEMBLING GAS SECTION. 111 115 116 114 105 113 112 107 MAJOR VALVE See cross section detail, fi gure 4. 128 Figure 3 101 197 104 123 124 121 197 43 102 133 198 103 104 105 119 107 109 121 110 123 108 118 120 122 PILOT VALVE MAJOR VALVE CROSS SECTION DETAIL 109 110 112 114 113 115 111 116 TORQUE REQUIREMENTS NOTE: DO NOT OVERT
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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 gas supply. Check tightness of (14) diaphragm screw. Check for plugged outlet hose. Check for kinked (restrictive) outlet material hose. Gas bubbles in product discharge. Check for kinked (restrictive) or collapsed inlet material Check connections of suction plumbing. hose. Check “O” rings between intake manifold and fl uid caps. Check for pump cavitat
