Graco 332090A User Manual
Instructions
332090A
EN
Important Safety Instructions
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Dispensit 1095
Dispense Valve
MODEL 1095-10
POSITIVE DISPLACING METERING UNIT
OPERATING AND MAINTENANCE MANUAL
Table of Contents
GENERAL INFORMATION ......................................................................................page 1
DESCRIPTION .......................................................................................................page 1
SAFETY INFORMATION .........................................................................................page 1
DESCRIPTION OF OPERATION .............................................................................page 2
SETUP PROCEDURE ..............................................................................................page 2
MOUNTING ............................................................................................................page 2
DISPENSE HEAD ..................................................................................................page 2
AIR CONTROLLER................................................................................................page 2
OIL ..........................................................................................................................page 2
DRY SYSTEM CHECKOUT .....................................................................................page 3
WET SYSTEM CHECKOUT ....................................................................................page 3
MATERIAL LOADING............................................................................................page 3
Periodic Maintenance .............................................................................................page 4
TROUBLESHOOTING .............................................................................................page 8
Recommended Spare Parts ..................................................................................page 8
WARRANTY AND LIABILITY ..................................................................................page 9
GENERAL INFORMATION
DESCRIPTION
The Model 1095-10 Positive Displacing Metering Unit provides precise metering and volumetric consistency over
a wide range of viscosities, extending from viscous materials to ultrahigh silicones and epoxies with material inlet
pressures up to a maximum of 1200 psi. The Model 1095-10 ships complete with the following:
• Model 1095-10 Positive Displacing Metering Unit
• Operating Manual
SAFETY INFORMATION
Only properly trained employees with a knowledge of the operations and safety warnings as set forth in this
manual should use this product. Read all applicable manuals completely before operating.
WARNING: Do not exceed 100 psi (690 kPa) pressure on the operating system. Do not exceed 1200 psi (82.7
bar) material inlet pressure for valves with steel spools. Do not exceed 400 psi (27.6 bar) for valves with plastic
spools. Higher pressures may cause damage to equipment and/or personal injury.
Note: The recommended pneumatic operating system pressure is 70 psi (clean/dry air).
Toxicity and flammability hazards depend upon the product being dispensed by this unit, and the user should take
appropriate safety precautions as shown on the MSDS of the product.
Always wear safety glasses.
page 1
DESCRIPTION OF OPERATION
The 1095-10 Positive displacing Metering Unit’s sequencing is as follows. In the normal “ready” state:
The material enters the unit through the material inlet port located on the bottom of the body (stamped “IN”) to fill
the spool and dispense cavities.
The spool shifts to the dispense position, internally blocking the material inlet port and opening the dispense
outlet.
The dispense cycle begins.
The metering rod cycles, pushing material from the dispense cavity through the outlet port (stamped “OUT”) to an
ON/OFF dispense valve (not part of the 1095-10). To refill the dispense cavity, the spool shifts again, blocking the
material outlet port, opening the material inlet port. At the same time the metering rod rises and the cavity fills.
The system is now in the normal “ready” state.
SETUP PROCEDURE
MOUNTING
Mount the 1095-10 base plate perpendicular to a smooth surface using the mounting holes provided.
DISPENSE HEAD
Connect the 1095-10 to a high pressure ON/OFF dispense head using a flexible hose having a very low
volumetric expansion ratio within the specified pressure ranges. Note: We recommend Stainless Steel braided
PTFE line.
AIR CONTROLLER
Operation of the 1095-10 Positive Displacing Metering Unit requires a controller that can provide the following:
• A minimum of 0.5 SCFM (2.3 cm3) of dry, unlubricated air at a minimum pressure of 70 psi (483 kPa).
• Time delay capability to allow the unit to cycle.
page 2
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