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Graco A Series Repair Parts

Graco A Series Repair Parts

Displacement pump for use with reactor electric proportioners
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Repair - Parts
Displacement Pump
FOR USE WITH REACTOR
3500 psi (24.5 MPa, 245 bar) Maximum Working Pressure
Component A (ISO) Pumps
with wet-cup flush feature
Part No. 246830, Series A
2
2
0.396 in.
(2.55 cm
)
Part No. 246831, Series A
2
2
0.552 in.
(3.56 cm
)
Part No. 246832, Series A
2
2
0.743 in.
(4.79 cm
)
Component B (Resin) Pumps
Part No. 245970, Series A
2
2
0.396 in.
(2.55 cm
)
Part No. 245971, Series A
2
2
0.552 in.
(3.56 cm
)
Part No. 245972, Series A
2
2
0.743 in.
(4.79 cm
)
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441
Copyright 2003, Graco Inc. is registered to I.S. EN ISO 9001
™
ELECTRIC PROPORTIONERS
TI3733a
309577D
TI2663A

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Summary of Contents for Graco A Series

  • Page 1 Part No. 245972, Series A 0.743 in. (4.79 cm TI3733a Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. TI2663A Graco Inc. P.O. Box 1441 Minneapolis, MN 55440-1441 Copyright 2003, Graco Inc. is registered to I.S. EN ISO 9001...

  • Page 2: Table Of Contents

    Supply Wet-cups with Throat Seal Liquid ..7 Graco Information ......28...

  • Page 3: Warning

    Misuse can cause serious injury or death. • For professional use only. • Use equipment only for its intended purpose. Call your Graco distributor for information. • Read manuals, warnings, tags, and labels before operating equipment. Follow instructions. • Check equipment daily. Repair or replace worn or damaged parts immediately.
  • Page 4 Warning WARNING BURN HAZARD This equipment is used with heated fluid, which can cause equipment surfaces to become very hot. To avoid severe burns: • Do not touch hot fluid or equipment. • Allow equipment to cool completely before touching it. •...

  • Page 5: Pressure Relief Procedure

    Pressure Relief Procedure Pressure Relief Shut off feed pumps and agitator, if used. Procedure Turn PRESSURE RELIEF/SPRAY valves (SA, SB) to PRESSURE RELIEF. Route fluid to waste WARNING containers or supply tanks. Ensure that gauges drop to 0. Read warnings, page 3. Relieve pressure in gun and perform gun shut- down procedure.

  • Page 6: Tools Needed

    • Non-sparking hammer, 20 oz maximum • Small screwdriver Clean and Inspect • Throat Seal Liquid (TSL), Graco Part No. 206995 Parts • ISO Pump Oil, Graco Part No. 217374 • Pick or long small screwdriver Clean and inspect all parts. Intake and piston •...

  • Page 7: Supply Wet-Cups With Throat Seal Liquid

    Turn main power OFF before filling wet cup. Component A (ISO) Pump: Keep reservoir (R) 3/4 filled with Graco Throat Seal Liquid (TSL), TI3765a-1 Part No. 206995. Wet-cup piston (28) circulates TSL through packing nut/wet-cup (19), to carry away isocyanate film on displacement rod.
  • Page 8 Supply Wet-cups with Throat Seal Liquid 309577D...

  • Page 9: Cutaway Views

    Cutaway Views Cutaway Views Component A (ISO) Pump Component B (Resin) Pump † † † † † † † † ‡*8 ‡*8 TI2668b TI3734b 309577D...

  • Page 10: Disassembly

    Disassembly Disassembly WARNING Disconnect fluid inlet (C) and outlet (D). Also disconnect steel outlet tube from heater inlet. Pump rod and connecting rod move during operation. Moving parts can cause serious injury such as pinch- Disconnect tubes (T). Remove tube fittings (U) ing or amputation.
  • Page 11 Disassembly TI3765a-1 TI3765a-2 . 1. Disconnect Pump A . 2. Disconnect Pump B 309577D...
  • Page 12 Disassembly Remove packing nut/wet-cup as follows: Loosen intake valve housing (5) with non-spark- ing hammer, then unscrew. Remove o-ring (15). Component A (ISO) Pumps: • Remove packing nut/wet-cup assembly. • Compress piston (28) into wet-cup (19), using a 1/2 in. (13 mm) x 2.5 in.
  • Page 13 Disassembly Tap rod (1) with non-sparking hammer to drive it Remove bushing (17). out of cylinder (2). TI2669B TI2672A Unscrew piston (7) from rod (1). Remove ball (16), u-cup (13), and bushing (14). Sleeve (4) may come out with rod. Using screwdriver in groove (H), remove sleeve (4) from cylinder (2), or pull it off rod.
  • Page 14 Disassembly 309577D...

  • Page 15: Reassembly

    Reassembly Reassembly Coat all non-Loctited parts with Graco 217374 Install throat u-cup as follows: ISO Pump Oil before reassembly, to ease future disassembly. Install ball (16*) in rod (1). Center u-cup (13*) on Models 246831, 246832, 245971, and rod (1). Lips of u-cup must face up. Use piston...
  • Page 16 Reassembly Insert bushing (17*). Press bushing in place to Component B (Resin) Pump: Install seat u-cup. felt washers (21*) into packing nut (19). Install retaining ring (22*). Install pack- ing nut handtight. TI2669B Assemble packing nut as follows: TI2701A Component A (ISO) Pump: Groove (H) in sleeve outer surface must be toward bottom.
  • Page 17 Reassembly Lubricate top 1-2 in. (25-50 mm) of displace- Reassemble intake valve with o-ring (10*), seat ment rod (1) and outside of sleeve (4). Grease (9), and ball (11*). Install ball guide (12). Models o-rings (3*) and place one in cylinder and other 246832 and 245972 only: Install spring (8*) with on bottom of sleeve.
  • Page 18 Reassembly Tighten packing nut/wet-cup. Turn main power OFF . Disconnect power supply. Do not overtighten packing nut/wet-cup. Throat u-cup (20) is not adjustable. Steps 15-18 apply to pump B. See F . 3. To Pump A: Wrap base of wet-cup (19) reconnect pump A, go to step 19.
  • Page 19 Reassembly Flat side faces up. Lubricate threads with ISO oil or grease. Pump top threads must be nearly flush with bearing face (N). TI3765a-1 . 3. Reconnect Pump B 309577D...
  • Page 20 Reassembly Steps 19-32 apply to pump A only. See F . 4. Apply thread sealant and screw elbow (U) into remaining wet-cup port. Torque to 10-15 ft-lb Screw pump into bearing housing (M) until top (14-20 N•m). Do not overtighten. threads are level with bearing face (N).
  • Page 21 Reassembly Flat side faces up. Lubricate threads with ISO oil or grease. Pump top threads must be nearly flush with bearing face (N). Finger guard (P) not used on Model E-30. TI3765a-2 . 4. Reconnect Pump A 309577D...

  • Page 22: Parts

    Parts Parts Component A (ISO) Pumps, with wet-cup flush feature Part No. 246830, E-20 and E-XP1; includes items 1-7, 9-28 Part No. 246831, E-XP2; includes items 1-7, 9-22, 24-28 Part No. 246832, E-30; includes items 1-22, 24-28 (shown) Used on 246832 only. †...
  • Page 23 Parts Part No. 246830, E-20 and E-XP1; includes items 1-7, 9-28 Part No. 246831, E-XP2; includes items 1-7, 9-22, 24-28 Part No. 246832, E-30; includes items 1-22, 24-28 (shown) Part No. Description Part No. Description 105444 BALL, piston; sst; 0.3125 in. (8 mm) 240518 ROD, displacement;...
  • Page 24 Parts Component B (Resin) Pumps Part No. 245970, E-20 and E-XP1; includes items 1-7, 9-23 Part No. 245971, E-XP2; includes items 1-7, 9-22 Part No. 245972, E-30; includes items 1-22 (shown) NOTE: These pumps were also used on Component A (ISO) side of Reactors built before May 2003. Used on 245972 only.
  • Page 25 Parts Part No. 245970, E-20 and E-XP1; includes items 1-7, 9-23 Part No. 245971, E-XP2; includes items 1-7, 9-22 Part No. 245972, E-30; includes items 1-22 (shown) Part No. Description Part No. Description 114054 O-RING; Viton® (245970) 240518 ROD, displacement; sst (245970) 106556 O-RING;...

  • Page 26: Accessories

    Accessories Accessories Wet-Cup Conversion Kits These kits convert 245970, 245971, or 245972 pumps to the wet-cup flush design. Refer to the following table to select the correct kit for your pump. Kits include instruction manual 309911. Pump Part No. Wet-Cup Conversion Kit 245970 248061, includes: 246962 Wet-Cup Kit...

  • Page 27: Technical Data

    Technical Data Technical Data Category Data Maximum working pressure 3500 psi (24.5 MPa, 245 bar) Effective area of displacement 246830 and 245970: 0.396 in. (2.55 cm 246831 and 245971: 0.552 in. (3.56 cm 246832 and 245972: 0.743 in. (4.79 cm Fluid inlet size 246830, 246831, 245970, and 245971: 3/4 npt(m) 246832 and 245972: 1 npsm(m)

  • Page 28: Graco Standard Warranty

    With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.

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