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ASM L1900 Repair Instructions And Parts List

Airless paint sprayer
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Repair Instructions and Parts List
L1900 and 1900 Airless Paint Sprayer
– For portable spray application of architectural paints and coatings –
3000 psi (207 bar, 20.7 MPa) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Models
L1900 – 249166 (120V), 249167 (240V)
1900 – Hi–Boy 233936 (Series A, B, C)
Stand 234952 (Series A, B)
Related manuals
. . . . . . .
309507
. . . . . . .
309428
Model 233936 (Series A, B),
Model 234952
. . . . . . .
311061
Models 2469166, 249167,
Model 233936 (Series C)
309508
ti6024b
Model 233936 (Series C)
Rev. M

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Summary of Contents for ASM L1900

  • Page 1 Repair Instructions and Parts List 309508 Rev. M L1900 and 1900 Airless Paint Sprayer – For portable spray application of architectural paints and coatings – 3000 psi (207 bar, 20.7 MPa) Maximum Working Pressure Important Safety Instructions Read all warnings and instructions in this manual.

  • Page 2: Table Of Contents

    ..... . . ASM Phone Number ......
  • Page 3 Warnings The following are general warnings related to the setup, use, grounding, maintenance and repair of this equipment. Additional, more specific warnings may be found throughout the body of this manual where applicable. Symbols appearing in the body of the manual refer to these general warnings. When these symbols appear through the manual, refer back to these pages for a description of the specific hazard.
  • Page 4 Read fluid and solvent manufacturer’s warnings. For complete information about your material, request MSDS from distributor or retailer. D Check equipment daily. Repair or replace worn or damaged parts immediately with genuine ASM replacement parts only. D Do not alter or modify equipment.
  • Page 5 Grounding and Electric Requirements The sprayer must be grounded. Grounding reduces the risk of static and electric shock by providing and escape wire for the electrical current due to static build up or in the event of a short circuit. D The sprayer requires a circuit with grounding receptacle.
  • Page 6 Grounding and Electric Requirements D Ground the metal pail by connecting a ground wire to the pail by clamping one end to pail and the other end to ground such as as water pipe. ti5851a D Maintain grounding continuity when flushing or relieving pressure by hold- ing metal part of spray gun firmly to side of a grounded metal pail, then...
  • Page 7 Pressure Relief Procedure 1. Turn power switch OFF and unplug power cord. 2. Turn Spray–Prime/Drain valve to PRIME/DRAIN to relieve pressure. PRIME 3. Turn pressure to lowest setting. Hold metal part of gun firmly to a grounded metal pail. Trigger gun to relieve pressure. ti6762a 4.

  • Page 8: Component Function And Identification

    Component Identification and Function ti6025b Fig. 1 Motor DC motor, permanent magnet, fan cooled Drive Assembly Transfers power from DC motor to displacement pump Displacement Pump Transfers fluid to be sprayed from source through spray gun Fluid Outlet Spray gun is connected here Prime Valve Used to prime and drain sprayer (also relieves fluid outlet pressure) when open...

  • Page 9: General Repair Information

    General Repair Information Pressure Relief Procedure 1. Keep all screws, nuts, washers, gaskets, and electrical fittings removed during repair proce- dures. These parts are not normally provided with replacement assemblies. System pressure must be manually relieved to prevent system from starting or spraying accidentally. Fluid To reduce risk of serious injury, including electric shock, do not touch moving or electrical parts with fingers or under high pressure can be injected through skin and...

  • Page 10: Grounding

    Grounding The sprayer must be grounded. Grounding reduces the risk of static and electric shock by providing an escape wire for the electrical current due to static build up or in the event of a short circuit. 1. 220–240 Vac models require a 10A circuit with a grounding receptacle.
  • Page 11 Troubleshooting MOTOR WON’T OPERATE (Continued) TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK refer to this column Basic Electrical Problems 4. That motor leads are securely fastened and 4.
  • Page 12 Troubleshooting LOW OR FLUCTUATING OUTPUT TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK refer to this column Low Output 1. For worn spray tip. 1. Follow Pressure Relief Procedure, then replace tip.
  • Page 13 Troubleshooting LOW OR FLUCTUATING OUTPUT TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK refer to this column Motor runs and pump strokes 1. Paint supply. 1. Refill and reprime pump. 2.
  • Page 14 Troubleshooting MOTOR IS HOT AND RUNS INTERMITTENTLY TYPE OF PROBLEM WHAT TO CHECK WHAT TO DO If check is OK, go to next check When check is not OK refer to this column Motor is hot and runs intermit- 1. Determine if sprayer was operated at high 1.

  • Page 15: Spin Test

    Spin Test Setup Armature, Brushes, and Motor Wiring Open Circuit Test (Continuity) 1. Connect red and black motor leads together with test lead. Turn motor fan by hand at about two revolutions per second. Electric Shock Hazard; page 9. 2. If uneven or no resistance, check for: broken brush To check armature, motor winding and brush electrical springs, brush leads, motor leads;...
  • Page 16 Motor Brush Replacement 6. Fig. 4. Insert brush (B). Push clip (A) until it snaps 8. Inspect commutator for excessive pitting, burning into place and secures brush. or gouging. A black color on commutator is normal. Have commutator resurfaced by a motor repair shop if brushes wear too fast.

  • Page 17: On/Off Switch Replacement

    On/Off Switch Replacement Removal Installation 1. Install new ON/OFF switch (23). Install locking ring (24) and toggle boot (25). 1. Relieve pressure; page 9. 2. Fig. 5. Remove four screws (18) and pressure 2. Connect four wires (A) to filter board (40). control cover (39).

  • Page 18: Pressure Control Repair

    Pressure Control Repair Motor Control Board Removal Installation Refer to Fig. 6. 1. Clean pad on rear of motor control board. Apply small amount of thermal compound to pad. 2. Fig. 5. Install motor control board (35) with four screws (36). Install filter board (40) and secure 1.
  • Page 19 Pressure Control Repair Pressure Control Transducer Pressure Adjust Potentiometer Removal Removal Refer to Fig. 6. Refer to Fig. 6. 1. Relieve pressure; page 9. 2. Remove four screws (18) and cover (39). 1. Relieve pressure; page 9. 3. Disconnect lead (E) from motor control 2.

  • Page 20: Drive Housing Replacement

    Drive Housing Replacement 4. Remove two front screws (22). CAUTION 5. Remove two back screws (22). Do not drop gear cluster (7) when removing drive housing (10). Gear cluster may stay engaged in 6. Pull drive housing (10) off of motor (1). motor front end bell or drive housing.

  • Page 21: Motor Replacement

    Motor Replacement Disassembly 7. Remove three screws (22) behind board and remove control housing (21). 8. Remove four screws (22) and motor (1) from frame (63). 1. Relieve pressure; page 9. 2. Remove pump (13), Displacement Pump Assembly Replacement, page 17. 1.

  • Page 22: Displacement Pump Replacement

    1. Fig. 10. Extend pump piston rod fully. Apply grease to top of pump rod at (A) or inside connecting rod. ti6751a Fig. 11 7. Fig. 12. Fill packing nut with ASM Packing Seal until fluid flows onto top of seal. ti6753a Fig. 10 2.
  • Page 23 Notes 309508...
  • Page 24 Parts Drawing ASM 1900 Sprayer Model 233936, Series A 132* PARTS, PAGE 32 ti2113b 309508...
  • Page 25 Parts List ASM 1900 Sprayer Model 233936, Series A NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION 242013* KIT, MOTOR, 240 Vac 106062 WHEEL, semi–pneumatic 115525 BLADE, fan motor 115480 KNOB, t–handle 243219 KIT, GEAR, combination 105521 PLUG, tubing 243218...

  • Page 26: Parts Model 233936

    Parts Drawing ASM 1900 Sprayer Model 233936 Series B and C (series C shown) 132* PARTS, PAGE 22 Ref 19 ti6027c 309508...
  • Page 27 Parts List ASM 1900 Sprayer Model 233936, Series B and C NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION 242013* KIT, MOTOR, 240 Vac includes 18, 75, 126, 127 115525 BLADE, fan motor 198933 VENT, side 243219 KIT, GEAR, combination...
  • Page 28 Parts Drawing – Sprayer ASM 1900 Sprayer Model 234952 Series A 130 131 PARTS, PAGE 32 84 Ref Ref 19 Ref 84 Ref 78 TI3454b TI0146B 309508...
  • Page 29 FITTING, elbow, 90_ 195847 ADAPTER, 3/8 npt x 1/4 npt 451–SG GUN, 400 32** 104984 TEE, pipe 717HOSE HOSE, 1/4 in. x 50 ft (15 m), ASM 156971 NIPPLE, short 195811 LABEL, instruction (not shown) 38** 116150 FITTING, adapter 195833Y...

  • Page 30: Parts Model 234952

    Parts Drawing – Sprayer ASM 1900 Sprayer Model 234952 Series B 130 131 Ref 19 PARTS, PAGE 32 84 Ref Ref 84 Ref 78 ti6028c 309508...
  • Page 31 FITTING, elbow, 90_ 115495 SCREW, slot hd, hex, washer hd 451–SG GUN, 400 32** 15E590 TEE, pipe 717HOSE HOSE, 1/4 in. x 50 ft (15 m), ASM 111763 ELBOW 195811 LABEL, instruction 42** 115523 GAUGE, pressure, fluid 195833Y LABEL, WARNING...
  • Page 32 Parts Drawing Ref 1 ti6029a Ref 45 309508...
  • Page 33 Parts List – Sprayer ASM 1900 Sprayer Model 233936, A, 234952, A NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION 195551 RETAINER, cordset 114421 BUSHING, strain relief 242005 ADAPTER, cordset, Australia 196904 LABEL, control 115492 SCREW, slot hd, hex, washer hd...
  • Page 34 Parts Drawing ASM L1900 Sprayer Model 249166 (120V) Model 249167 (240V) 132* PARTS, PAGE 36 Ref 19 ti6027b 309508...
  • Page 35 Parts List ASM L1900 Sprayer Model 249166 (120V) Model 249167 (240V) NO. PART NO. DESCRIPTION 242009* KIT, MOTOR, 120 Vac 73** 192644 FITTING, nipple, long 242013* KIT, MOTOR, 240 Vac 245439 SHROUD, motor,kit 115525 BLADE, fan motor includes 18, 75, 126, 127...
  • Page 36 Parts Drawing Ref 1 ti6029a Ref 45 309508...
  • Page 37 Parts List – Sprayer ASM L1900 Sprayer Model 249166 (120V) NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION 115632 RETAINER, cordset 241996 ADAPTER, cordset (UK) 287121 CORDSET (Italy, Denmark, 114064 BUSHING, strain relief (not shown) Switzerland) (not shown) 196904 LABEL, control...
  • Page 38 Wiring Diagram Caution Heat from inductor coil of filter board may destroy wire insulation that comes in contact with it. Exposed wires could cause shorts and component damage. Bundle and tie all loose wires so none lay in contact with inductor coil of filter board.

  • Page 39: Technical Data

    Technical Data 100–120V, ∅, 220–240V, ∅, Generator Motor HP Cycles per gallon Maximum Maximum Fluid Outlet A, Hz A, Hz Minimum W (liter) Delivery gpm Tip size npsm (lpm) 1, 15, 50/60 1, 10, 50/60 3000 7/8 (653) 680 (180) 0.38 (1.25) 0.019 1/4 in.

  • Page 40: Asm Warranty

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

This manual is also suitable for:

1900249166249167Hi–boy 233936Stand 234952

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