Graco L20c Operation Manual
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Graco L20c Operation Manual

Graco L20c Operation Manual

Single post supply system
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Operation
L20c Single Post
Supply System
Used to transfer medium to high viscosity sealants and adhesive materials, at ambient
temperature, out of various sized material pails. For professional use only.
L20c 2 inch single post supply system
20 liter (5 gallon)
100 psi (0.7 MPa, 7bar) Maximum Air Inlet Pressure
See page 3 for model information and approvals.
Important Safety Instructions
Read all warnings and instructions in this
manual before using the equipment.
Save these instructions.
3A8595A
EN

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Summary of Contents for Graco L20c

  • Page 1 Used to transfer medium to high viscosity sealants and adhesive materials, at ambient temperature, out of various sized material pails. For professional use only. L20c 2 inch single post supply system 20 liter (5 gallon) 100 psi (0.7 MPa, 7bar) Maximum Air Inlet Pressure See page 3 for model information and approvals.

  • Page 2: Table Of Contents

    California Proposition 65 ....21 Graco Standard Warranty ....22...

  • Page 3: Models

    Seal Model Size Style Material Material Pump Code Size Name Air Controls (See Table 1 20 L 2 in. L20c F, SW Nitrile (Supply for 2-digit Air Control Panel (5 Gal) System with Check-Mate 20 L F, SW Polyurethane Check-Mate...

  • Page 4: Pump Identification

    Models Pump Identification Table 1: Check-Mate Pump Identification See the Check-Mate Pump Packages Instruction-Parts manual or the ID plate on the pump to determine the Code/Part No. Index pump part number. The pump identification code listed in Table 1 Pump Model represents the air motor style, nominal air motor size Pump Code (see manual 312376)

  • Page 5: Warnings

    Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
  • Page 6 Warnings WARNING FIRE AND EXPLOSION HAZARD Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or solvent flowing through the equipment can cause static sparking. To help prevent fire and explosion: • Use equipment only in well-ventilated area. •...
  • Page 7 Warnings WARNING TOXIC FLUID OR FUMES HAZARD Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swallowed. • Read Safety Data Sheets (SDSs) to know the specific hazards of the fluids you are using. •...

  • Page 8: Component Identification

    Component Identification Component Identification Model CM7B1G Shown Lift Location r_257032_312376_1e . 1: Component Identification Key: Elevator Cart Platen Bleed Port Air Motor Pump Bleed Valve Displacement Pump Air Inlet Platen Bleed Stick Enclosed Wet Cup (behind air controls) Elevator Lift Cylinder Elevator and Pump Air Controls Priming Piston/Pump Inlet 3A8595A...

  • Page 9: Air Controls

    Component Identification Air Controls • Air motor regulator and gauge (AA): Controls and displays air pressure supplied to the air motor (B) to drive the displacement pump (C). • Blowoff button (AB): Turns air on and off to push the platen out of an empty pail. The blowoff button is only functional when the elevator director valve (AD) is in the UP (open) position.

  • Page 10: Installation

    See F . 4. Accessories are available from Graco. Make certain all accessories are adequately sized and pressure-rated to meet the system’s requirements. Contact your Graco distributor for assistance in designing a system to suit your particular needs.

  • Page 11: Flush Before Using Equipment

    See your pump manual for flushing instructions. Mechanical Setup 1. Fill the displacement pump wet cup 1/3 full with Graco Throat Seal Liquid (TSL). 2. Back-off the air motor regulator (AA) to its full counterclockwise position and close the air motor shutoff valve (AC).

  • Page 12: Overview

    Overview Overview Basic Supply System Operating Air Motor Regulator and Gauge (AA) Controls Air pressure to the air motor (B) can be adjusted and viewed using the air motor regulator (AA) and gauge. Review the following descriptions of the air controls Pull the knob cap to unlock the air motor regulator (AA) before operating the equipment.

  • Page 13: Pressure Relief Procedure

    Overview Pressure Relief Procedure 8. Open the pump bleed valve (H). Have a container ready to catch the drainage. Follow the Pressure Relief Procedure whenever 9. Leave the pump bleed valve (H) open until ready to you see this symbol. dispense again.

  • Page 14: Start And Adjust Elevator

    Overview Start and Adjust Elevator 2. Turn the air motor regulator (AA) fully counterclockwise to disable the pump. Load Pails 3. Set the elevator director valve handle (AD) to UP and let the elevator rise to its full height. This procedure is for loading a material pail when no other pail is installed.

  • Page 15: Start And Adjust Pump

    Overview Purge Air From the Pump b. It may be necessary to push down on the cart handles to help the platen (D) enter the pail. c. Close the platen bleed port (G) by inserting the bleed stick (K) into the bleed port and screwing To reduce the risk of skin injection, do not use your it tight.

  • Page 16: Change Pails

    Overview Change Pails Purge Air From the Fluid Hose and Dispense Valve The elevator lift cylinder (L) raises the displacement pump (C) and platen (D). Blowoff air is used to push the material pail off of the platen as the elevator rises. Without blowoff air, the elevator will lift the pump, platen, and pail.

  • Page 17: Shutdown And Care Of The Pump

    Overview Material splatter may occur when blowoff pressure is relieved between the pail lip and the perimeter of the platen (D) as the platen exits the pail. Wear appropriate protective equipment when in the work area to help prevent serious injury from splashing fluid.

  • Page 18: Troubleshooting

    Troubleshooting Troubleshooting Check all possible problems before disassembling the supply system. Refer to the Check-Mate Pump Packages Instruction-Parts manual for pump troubleshooting and additional diagnostics. See Related Manuals on page 2 for more information. Elevator Problem Cause Solution Elevator will not raise or lower. Closed air valve or clogged air line.

  • Page 19: Dimensions

    Dimensions Dimensions Dimensions 69 in. (1752.6 mm) 44 in. (1117.6 mm) 22 in. (558.8 mm) 21 in. (533.4 mm) (elevator (elevator down) . 11: Dimensions Weight See the identification plate (ID) for the weight of your supply system. 3A8595A...

  • Page 20: Recycling And Disposal

    Recycling and Disposal Recycling and Disposal End of Product Life At the end of the product’s useful life, dismantle and recycle it in a responsible manner. • Perform the Pressure Relief Procedure. • Drain and dispose of fluids according to applicable regulations.

  • Page 21: Technical Specifications

    Technical Specifications Technical Specifications L20c Single Post Supply System Metric Ambient operating temperature range 32-120 °F 0-49 °C Maximum air input pressure 100 psi (0.7 MPa, 7 bar) Air inlet size 1/2 npsm(f) Sound Data See separate air motor manual.

  • Page 22: 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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