Graco 332101A User Manual
Instructions
332101A
EN
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
Dispensit
Dispense Valve
1095 Air/Oil Drive
Quick Start Up
Initial Start up
Install the Air Oil unit in the normal upright position.
It is not required to install material to the dispense valve in the initial startup.
Metering rod up
Air/Oil reservoir filed to line
70 psi dry non lubricated air supply
Set the flow control knob set to “A” scale
Adjust pneumatic flow control to almost closed (want slow travel during purge)
Never over fill oil
Never tip air oil cylinder when oil is in reservoir otherwise every time the solenoid cycles, oil will be atomized
by the exhaust mufflers.
Wet The System
Connect the material feed and dispense valve
Activate pneumatic solenoid on top of Air Oil unit either by using override control or using control circuit
Lower metering rod to almost dead head position (no more than 4 inches of travel)
Release solenoid control to allow metering rod to raise
Check oil lever in reservoir
Repeat lower / raise cycle until air is purged from Air Oil cylinder
Once most air is purged from system adjust oil flow control to approximate speed of dispense
Adjust pneumatic flow control to achieve fill rate - adjust for slowest refill possible so as to prevent metering rod
cavitation (reintroducing air)
Adjust the control system timer to control the Air Oil solenoid valve
The higher the timer resolution the more accurate the dispense volume
For minor bead adjustments, use the hydraulic flow control to achieve precise bead control
Usually the control system is used to start and stop the bead.
The on/off dispensing flow valve is tied into the starting and stopping of the Air Oil
Occasionally it will be necessary to change the sequencing of the on/off valve to compensate for the uniqueness of
the material handling characteristics.
Quick Start Up con’t
Cycle to purge air from system
Activate pneumatic solenoid on top of Air Oil unit either by using override control or using control circuit
Lower metering rod to almost dead head position (no more than 4 inches of travel)
Release solenoid control to allow metering rod to raise
Check oil lever in reservoir
Repeat lower / raise cycle until air is purged from Air Oil cylinder
Once most air is purged from system adjust oil flow control to approximate speed of dispense
Adjust pneumatic flow control to achieve fill rate - adjust for slowest refill possible so as to prevent metering rod
cavitation (reintroducing air)
Sequence of Operation
Metering rod in the home position (up)
The oil reservoir is at its low level (lower black mark on the side of the upper chamber)
To dispense ---- the solenoid is activated air is directed into the cap end of the cylinder forcing the oil residing in the
cylinder’s rod end across the adjustable orifice in the flow control and back into the upper reservoir chamber.
To refill ---- the solenoid shifts and pressurized air is forced into the upper reservoir chamber and oil is directed into
the flow control and free flows around the orifice into the cylinder rod raising the metering rod. The exhausting cap
end air is passed thru a pneumatic flow control to control the refill speed.
To adjust the rate of dispense the knurl knob of the hydraulic flow control is rotated to achieve the desired speed.
To adjust the refill rate the pneumatic flow control is similarly adjusted.
DISPENSIT® MODEL 1095
DISPENSE VALVE
OPERATING AND MAINTENANCE MANUAL
General Information ........................................................................ 3
Safety Information ........................................................................... 3
Illustration References .................................................................... 3
General Accessories ....................................................................... 4
Sequence of Operation ................................................................... 4
Operation Illustration ..................................................................... 5
Setup Procedure ............................................................................. 6
Priming the Air/Oil Drive ............................................................... 6
Mounting Dispense Valve ............................................................. 6
On/Off Dispense Valve ................................................................. 6
Air Controller ................................................................................ 6
Air Lines ........................................................................................ 6
Optional Cycle Detection Spool Sensors ...................................... 6
Model 1095 General Illustration ..................................................... 7
Operating Procedures .................................................................... 8
Dry Run ....................................................................................... 8
Loading & Priming ....................................................................... 8
Output Verification ....................................................................... 9
Daily Operation and Maintenance ............................................... 9
Operation Adjustments .................................................................. 10
Periodic Maintenance ..................................................................... 10
Refilling the Hydraulic Oil Reservoir ................................................ 10
Changing the Reclassifier Filter Element ......................................... 10
Disassemby – Metering Unit ............................................................ 11
Model 1095 Metering Unit Illustration .............................................. 12
Assembly – Metering Unit ................................................................ 13
Troubleshooting ............................................................................. 15
Model 1095 Recommended Spare Parts ....................................... 16
General Guidelines for O-rings and U-cup Seals .......................... 17
Warranty ........................................................................................... 18
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GENERAL INFORMATION
The Model 1095 Series Metering Rod Positive Displacement Dispense Valve is designed for applications that
require precise metering and volumetric consistency at a wide range of material inlet pressures.
The 1095 operates with material supply pressures up to 1,200 psi (82.7 bar) or 400 psi (27.6 bar) for plastic spool
models. Material viscosity dispensing capabilities range from very thin material to high viscosity pastes with
viscosities in excess of 1,000,000 cps (1000 Pas).
The Model 1095 series ships complete with the following:
Model 1095 Dispense Valve
Solenoid Valve (110 VAC)
Air/Oil Drive Cylinder
Oil Flow Control
Metering Unit
Mounting Bracket
Seal Kit
Optional Cycle Detection Sensors (comes with cycle detection option)
Operating and Maintenance 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.
Note: The 1095 is shipped less the hydraulic oil in the Air/Oil cylinder. Add the oil before putting the 1095 into
service. See “Priming the Air/Oil Drive” in the Setup Procedure section for details.
WARNING: Do not exceed 100 psi (6.9 bar) pressure on the operating system. For 1095 valves with steel spools
do not exceed 1200 psi (82.7 bar) material inlet pressure. For 1095 valves with plastic spools do not exceed 400
psi (27.6 bar) material inlet pressure. Higher pressures may cause a hazard or serious injury.
Note: The minimum recommended pneumatic operating system pressure is 70 psi (4.8 bar) 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 indicated on the MSDS of the product.
Always wear safety glasses.
ILLUSTRATION REFERENCES
Throughout this manual you will find references by illustration item number to the illustrations in the manual. The
references are indicated by parentheses around a number such as: (7). Illustrations represent typical valve
configurations. The drawings for your exact model are inserted at the back of the manual and include the part
numbers for ordering replacement parts.
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GENERAL ACCESSORIES
Liquid Control offers a full line of standard and custom accessories for your dispensing needs including:
Valve Controllers
Cartridge Retainers and Pressure Reservoirs
Titan 200 High Pressure Cartridge Feed Systems
Transfer Pump Feed Systems for 1, 5 and 55 gallon containers
Consult your Dispensit dealer or the factory for details.
SEQUENCE OF OPERATION
The 1095 series Dispense Valve is a positive displacement valve. The sequence of operation of the system is as
follows:
1. Material enters the valve through the material inlet port located on the adapter block and fills the spool and
dispense cavities. This is the normal “ready” state.
2. The controller activates the dispense cycle.
3. The spool shifts to the dispense position, internally blocking the material inlet port and opening the dispense
outlet.
4. The metering rod cycles, pushing material from the dispense cavity.
5. After the time delay set by the air controller the spool shifts again blocking the material outlet port and
opening the material inlet port to refill the dispense cavity. At the same time the metering rod rises and the
cavity fills. The system is again in the normal “ready” state.
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