PVA MR1 User manual

MR1
Owner’s Manual
Revision A
WHERE
PRECISION
DRIVES
PRODUCTION

MR1 Manual
Revision A /March 2020 Page 2 of 33
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 © 2020
Precision Valve and Automation, Inc.
All Rights Reserved.

MR1 Manual
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Table of Contents
Introduction...........................................................................................................4
PVA Contact Information........................................................................................................4
Document History.....................................................................................................................4
Safety ..........................................................................................................................................5
Theory of Operation .................................................................................................................7
Personal Protective Equipment.............................................................................................7
Waste Disposal...........................................................................................................................7
Necessary Tools ........................................................................................................................ 7
Setup.......................................................................................................................8
Overview .................................................................................................................................... 8
Operation................................................................................................................9
Bleed the Pump.........................................................................................................................9
Shutdown ...................................................................................................................................9
Remove the Pump ....................................................................................................................9
Disassembly ..............................................................................................................................11
Assembly Instructions...........................................................................................................16
Install Clamp.....................................................................................................................21
Fill the Fluid Distribution Block ................................................................................... 22
Install the MR1................................................................................................................. 23
Technical Specifications....................................................................................26
Troubleshooting..................................................................................................27
Damaged Pump Gasket ........................................................................................................ 28
Calling Technical Support .................................................................................................... 30
Notes ..................................................................................................................... 31
Warranty ...............................................................................................................32
Table of Figures ...................................................................................................33

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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
Technical Support
PVA
Six Corporate Drive
Halfmoon, NY 12065
Tel [phone]
Fax [phone]
Website: http://www.pva.net
Email: [email protected]
Tel [phone]
Email: [email protected]
Document History
Revision
Revision Date
Reason for Changes
REV A
March 2020
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.

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Theory of Operation
The MR1 is a servo-controlled piston dispenser for processing single component materials.
Personal Protective Equipment
Operators must use eye protection because material contents are under pressure. 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.
Necessary Tools
PVA offers tools and cleaning accessories to maintain the MR1.
Part Number Description
02506
Hook and Pick Set
Soft-jaw Pliers and/or Vice
Lubrication Fluid
Silicone Grease
2.5mm and 3mm T-handle or Hex Key
90° Snap Ring Pliers
Table 1: MR1 Tool Kit

MR1 Manual
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Setup
Before you operate the MR1 metered piston dispenser, read and understand this manual.
This information is for safety and correct operation of the pump. This manual provides the
information needed to operate, repair, and troubleshoot.
Overview
The MR2 metered piston dispenser is constructed from three main components.
•The upper section of the pump is called the metering body; it houses the carbide
cylinder and piston.
•On the front of the metering body is the oil window and fluid distribution block which
are used to ensure the pistons function smoothly.
•The lower section of the pump is called the metering sleeve which is covered by the
air body that controls the flow of dispensed material.
Figure 1: MR1 Overview

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Operation
Note: Use only compatible solvents and materials or the seals and O-rings will be
damaged.
Bleed the Pump
1. To bleed the MR1, move the pump over a purge cup.
2. Dispense all the way until the piston reaches its full travel. Repeat as many times as
necessary to get all air out of the system.
Shutdown
Refer to the workcell manual for information on how to shut down the workcell.
1. Reduce the air pressure in the system to zero.
2. Bleed the pressure out of the pump and install the nightcap. Make sure to wipe off
any excess material before screwing on nightcap.
Remove the Pump
1. Before you remove the MR1 from the material supply system, use the purge button to
dispense until the piston is all the way down.
2. Engage the workcell Emergency Stop button and turn the air pressure to 0 psi.
WARNING: MR1 maximum air pressure is 75 psi. Do not overpressure the air system.
3. Remove the air lines, fluid lines, and motor cables.
4. To remove the pump, use a 4 mm hex wrench to remove the four mounting bolts.
Figure 2: Remove Mounting Bolts

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WARNING: Keep the MR1 upright until all fluid is removed from the oil window or oil will
spill from the oil window. See Figure 17: Oil Window.
5. To remove the fluid section from the drive assembly, remove the airlines.
6. Use a 3 mm hex wrench to remove the four shoulder bolts from the fluid assembly
mount plate.
7. Use a 3 mm hex wrench to remove the four socket head bolts from the fluid
assembly mount plate.
Figure 3: Shoulder and Socket Bolts
8. Separate the pump from the drive assembly mount.
Figure 4: Remove Pump from Drive Assembly