The Graco Proportioner 255405 is a high-performance industrial asset designed for precise fluid dispensing. This proportioner is ideal for various applications, ensuring accurate mixing and application of materials. With robust construction and reliable operation, it is a preferred choice for professionals in the industry.

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Manual for Graco Proportioner 255405

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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
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Work Order Templates

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Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
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Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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Graco Proportioner 255405

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Maintenance Plans for Graco Proportioner Model 255405

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Initial 3 Months / 250 Hours Hydraulic Fluid and Filter Replacement

Change break-in oil in a new unit after first 250 hours of operation or within 3 months, whichever comes first.

Change Hydraulic Fluid and Filter

1. Pressure Relief Procedure:

1.1. Relieve pressure in gun and perform gun shutdown procedure. See gun manual.

1.2. Engage gun piston safety lock.

1.3. Close gun fluid manifold valves A and B.

1.4. Shut off feed pumps and agitator, if used.

1.5. Turn PRESSURE RELIEF/SPRAY valves SA, SB to PRESSURE RELIEF/CIRCULATION. Route fluid to waste containers or supply tanks. Ensure gauges drop to 0.

1.6. Disconnect gun air line and remove gun fluid manifold.

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1 Yearly / 1000 Hourly Hydraulic Fluid and Filter Replacement

Change Hydraulic Fluid and Filter

1. Pressure Relief Procedure:

1.1. Relieve pressure in gun and perform gun shutdown procedure. See gun manual.

1.2. Engage gun piston safety lock.

1.3. Close gun fluid manifold valves A and B.

1.4. Shut off feed pumps and agitator, if used.

1.5. Turn PRESSURE RELIEF/SPRAY valves SA, SB to PRESSURE RELIEF/CIRCULATION. Route fluid to waste containers or supply tanks. Ensure gauges drop to 0.

1.6. Disconnect gun air line and remove gun fluid manifold.

2. Allow hydraulic fluid to cool.

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1 Monthly Lubricant Replacement

To change pump lubricant:

1. Pressure Relief Procedure:

1.1. Relieve pressure in gun and perform gun shutdown procedure. See gun manual.

1.2. Engage gun piston safety lock.

1.3. Close gun fluid manifold valves A and B.

1.4. Shut off feed pumps and agitator, if used.

1.5. Turn PRESSURE RELIEF/SPRAY valves SA, SB to PRESSURE RELIEF/CIRCULATION. Route fluid to waste containers or supply tanks. Ensure gauges drop to 0.

1.6. Disconnect gun air line and remove gun fluid manifold.

2. Lift the lubricant reservoir LR out of the bracket RB and remove the container from the cap. Holding the cap over a suitable container, remove the check valve and allow the lubricant to drain. Reattach the check valve to the inlet hose. See FIG. 15.

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1 Daily Proportioner Check

Check hoses and couplings

Check gun resistance

Check equipment

Inspect Inlet Fluid Strainer Screens

Clean the A-side screen

Check the condition of the ISO pump lubricant

Note any parts that need to be replaced

Signature required

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