PVA 1GPU User manual

PVA-1GPU
Owner’s Manual
Revision E
INNOVATION. PRECISION. EXCELLENCE.

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This document is based on information available at the time of its publication. While efforts
have been made to ensure the contents of this manual are accurate, the information
contained herein does not purport to cover all specific details or variations in hardware, or
to provide for every possible contingency in connection with installation, operation, or
maintenance. Features may be described herein which are not present in all hardware and
software systems. Precision Valve and Automation, Inc. assumes no obligation of notice to
holders of this document with respect to changes subsequently made.
Precision Valve and Automation, Inc. makes no representation or warranty, expressed,
implied, or statutory with respect to, and assumes no responsibility for the accuracy,
completeness, sufficiency, or usefulness of the information contained herein. No warranties
of merchantability or fitness for purpose shall apply.
This document, including the information contained herein, is the property of
Precision Valve and Automation, Inc. and is considered confidential and proprietary
information. It is delivered on the express condition that it not be used, disclosed, or
reproduced, in whole or in part, for any reason without prior written consent of
Precision Valve and Automation, Inc.
Copyright © 2022
Precision Valve and Automation, Inc.
All Rights Reserved.

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Table of Contents
Introduction...........................................................................................................5
PVA Contact Information ........................................................................................................5
Document History.....................................................................................................................5
Safety ..........................................................................................................................................6
Theory of Operation ................................................................................................................ 8
Personal Protective Equipment............................................................................................ 8
Waste Disposal.......................................................................................................................... 8
Pump Overview......................................................................................................9
Ram Overview..........................................................................................................................10
Machine Requirements........................................................................................11
Main Air Supply.........................................................................................................................11
Ram Controls ....................................................................................................... 12
Ram Up......................................................................................................................................12
Ram Down.................................................................................................................................13
Ram Hold...................................................................................................................................13
Ram Regulator.........................................................................................................................14
Pump Operation................................................................................................... 15
How to Remove a Pail ............................................................................................................15
How to Install a New Pail .......................................................................................................18
How to Bleed Air from the Ram .......................................................................................... 20
Normal Pump Operation ........................................................................................................21
System Shutdown Procedure ............................................................................................. 22
Overnight pump shutdown.......................................................................................... 22
Long-term pump shutdown ........................................................................................ 22
Maintenance ........................................................................................................23
How to Remove the Ram Seal............................................................................................. 24
How to Install the Ram Seal................................................................................................. 26
How to Lubricate the Ram Seal .......................................................................................... 28
Pump Options.......................................................................................................29

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Shutoff Options...................................................................................................................... 29
Material Level Sensors.......................................................................................................... 30
Recommended Spare Parts ............................................................................... 31
Technical Specifications....................................................................................32
Troubleshooting..................................................................................................33
Table of Figures .................................................................................................. 34
Notes .....................................................................................................................35
Warranty ...............................................................................................................36

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Introduction
Before you operate this system, read the operation and setup manual. This will help you to
become familiar with the product and ensure successful operation.
If any questions or problems arise, contact PVA’s Technical Support department.
PVA Contact Information
Main Office PVA
6 Corporate Drive
Halfmoon, NY 12065
Tel [phone]
Fax [phone]
Website: http://www.pva.net
Email: [email protected]
Technical Support
Tel [phone]
Email: [email protected]t
Document History
Revision
Revision Date
Reason for Changes
REV E
October 2022
PSI Correction
REV D
March 2021
1GPU Redesign
REV C
July 2015
Images Updated
REV B
May 2015
Ram Design Update
REV A
June 2013
Initial Release
Note: All photographs and CAD model representations in this document are a
“general representation” of the system and its components. The actual appearance
of the system and its components can differ based upon customer specific
configuration.

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Safety
Certain warning symbols are affixed to the machine and correspond to notations in this
manual. Before operating the system, identify these warning labels and read the notices
described below. Not all labels may be used on any specific system.
Always wear approved safety glasses when you operate or work near the
workcell.
Before you operate the system, read and understand the manuals provided
with the unit.
Never put hands or tools in areas with this symbol when the machine is in
operation. A dangerous condition may exist.
Read and understand the manuals provided with the unit before any repairs
or maintenance is done. Only a qualified individual should do service.
Use caution when there are pressurized vessels. Find and repair any leaks
immediately. Always wear appropriate safety equipment when you work
with pressurized vessels or vessels that contain chemicals
Shear hazard from moving parts. Avoid contact.
Do not remove protective guarding.
In situations where inattention could cause either personal injury or damage
to equipment, a warning notice is used.

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Do not smoke near the machine. Always have a fire extinguisher available
for emergency use.
Before performing any repairs or maintenance to the system, turn off power
and lock out the power disconnect switch.
Warning notices are used to emphasize that hazardous voltages, current,
temperatures, or other conditions that could cause personal injury exist in
this equipment or may be associated with its use. Only qualified personnel
should enter areas designated with this symbol.
Laser light source present. Do not stare directly into the beam. Do not use in
the presence of highly reflective surfaces
Pinch hazard from moving parts. Avoid contact.
Hot surface. Avoid contact.
Warning, Ultraviolet (UV) light hazard. Do not look directly at the UV light
source.
This product meets EU standards for health, safety, and environmental
protection.
Warning, no open flames.
Electrostatic sensitive device warning. Observe precautions for handling.

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Theory of Operation
The PVA-1GPU is a simple hydraulic press made to extrude high viscosity, thermally
conductive adhesives and gap fillers from 1-gallon steel pails. There are no internal moving
parts to wear out or break down the integrity of the fillers. The PVA-1GPU uses normal,
shop compressed air to operate and can be integrated with automation equipment.
Personal Protective Equipment
Operators must use eye protection at all times. Always wear gloves when handling
materials and solvents. Refer to MSDS sheets on the material being dispensed for other
precautions.
Waste Disposal
Dispose of all used parts and materials in accordance with local laws and regulations.

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Pump Overview
Figure 1: Pump Overview

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Ram Overview
Figure 2: Ram Overview
Figure 3: Ram Cross Section

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Machine Requirements
Main Air Supply
Supply the system with 70-100 psi of clean, dry air. It connects at the main air supply.
Figure 4: Main Air Supply

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Ram Controls
Figure 5: Ram Control Panel
Ram Up
•Put the 3-position hand lever in the RAM UP position to raise the ram out of the pail.
•The rate at which the ram moves up is controlled by the ram up pressure.
•Adjust the ram up pressure with the ram regulator (refer to Section Error! R
eference source not found.).
Figure 6: Ram Up

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Ram Down
•Put the 3-position hand lever in the RAM DOWN position to lower the ram into the
pail.
•The rate at which the ram lowers is controlled by the ram down pressure.
•Adjust the ram down pressure with the ram regulator (refer to Section 4.4).
Figure 7: Ram Down
Ram Hold
•Put the 3-position hand lever in the RAM HOLD position to keep the ram in the
position it is in.
•System pressure is relieved in the RAM HOLD position. The RAM HOLD position is
used whenever the pump is not in operation, or when you want to keep the ram in a
position.
Note: You cannot dispense material in the RAM HOLD position.
Figure 8: Ram Hold

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Ram Regulator
The ram regulator controls the ram up and down pressure. To adjust the ram pressure:
1. Turn the Ram Regulator knob to the necessary pressure position as shown on the Ram
Drive Pressure Gauge.
2. As you turn the Ram Regulator knob, the pressure will change slowly. Wait for the
pressure to adjust. Do not exceed 90 psi (620 kPa).
Figure 9: Ram Down Regulator

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Pump Operation
How to Remove a Pail
1. Close the front and rear doors. Make sure they are latched.
Figure 10: Door Latched
2. Put the 3-position hand lever in the RAM UP position.
Figure 11: Ram Up

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3. Turn the Ram Regulator knob to adjust the ram pressure to a maximum of 80 psi.
Figure 12: Ram Drive Pressure 80 psi
4. Let the ram lift completely out of the pail clamp. The bottom of the ram should be
about 1” above the top of the pail clamp.
5. Put the 3-position hand lever in the “RAM HOLD” position.
Figure 13: Ram Hold

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6. Open the front door.
7. Use the 3/8” T-handle hex key to remove the three machine screws from the pail
clamp.
Figure 14: Remove Screws from Pail Clamp
8. Open the pail clamp.
Figure 15: Screws Removed, Pail Clamp Open
9. Remove the old pail.
10. Wipe the ram seal thoroughly and lubricate with mineral oil.
11. Install a new pail.

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How to Install a New Pail
Note: Clean and lubricate the ram seal between each pail change. Refer to Section 6.3
for the procedure. It is necessary to replace the ram seal periodically, spare seals
should be kept on hand. Refer to Section 6.1 for the procedure.
1. Put a new pail in the pail clamp.
2. Turn the pail so that handle protrusions line up with the slot in the pail clamp.
Figure 16: Pail Handle Slot

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3. Close the front pail clamp. Turn the pail, if necessary, to make sure the pail is
correctly installed on the base.
4. Put the three machine screws in the pail clamp again.
Figure 17: Install the Screws
5. Tighten the three machine screws with the 3/8” T-handle hex key.
6. Close the front door.
7. Put the 3-position hand lever in the RAM DOWN position.
Figure 18: Ram Down

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8. Use the Ram Regulator knob to adjust ram down pressure and increase or decrease
the rate that the ram lowers into the pail.
Figure 19: Adjust Ram Down Pressure
9. Lower the ram until the ram seal starts to enter the top of the pail. Put the 3-
position hand lever in the RAM HOLD position. Refer to Section 5.3 on how to bleed
the valve.
How to Bleed Air from the Ram
After a new pail has been installed, it is necessary to bleed any air that is in the ram before
you begin to dispense.
1. Open the front door.
2. Turn the front ball valve to the open position.
Figure 20: Front Ball Valve Open
3. Close the door.
4. Put the 3-position hand lever in the RAM DOWN position. To stop the ram at any
time, put the 3-position hand lever in the RAM HOLD position.