food grade printers

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Videojet Technologies Inc. 2008 by Videojet Technologies Inc., All rights reserved.

1500 Mittel Boulevard Phone: 1-800-843-3610 Offices: USA: Atlanta, Chicago, Los Angeles, PhiladelphiaWood Dale, IL INTL: France, Germany, Ireland, Japan,, Spain60191-1073 USA Fax: 1-800-582-1343 The Netherlands, Singapore, The United Kingdomwww.videojet.com Intl Fax: 630-616-3629 Distributors Worldwide

EXCEL

Food Grade PrintersP/N 365604-21

Procedures in this addendum should be performedonly by trained service or maintenance personnel.

recycled paper

PRINTER ADDENDUM

Rev. BC 01/08


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Food Grade Addendum

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Copyright 2008 by Videojet Technologies Inc.All rights reserved. No part of this book may be reproduced

or utilized in any form or by any means, electronic or mechanical, including photocopying,

recording or by any information storage and retrieval system, without written permission.

Inquires should be addressed to Videojet Technologies Inc.Wood Dale, IL 60191


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VIDEOJET EXCEL Printer

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Table of Contents

Food Grade Printer Operation--------------------------------------------------- 4

Introduction --------------------------------------------------------------- 4

Recommend Food Grade Ink Procedures -------------------------------------- 5

Introduction --------------------------------------------------------------- 5

Notice for Food Grade Applications----------------------------------- 5

General Concern: Preclude Contaminants from entering

the System----------------------------------------------------------------- 5

General Concern: Preclude Environmental Changes thataffect the pH of the Fluid------------------------------------------------ 6

Supplies and Equipment Required for Food Grade Ink Printer

System------------------------------------------------------------------------------ 8

Introduction --------------------------------------------------------------- 8

Food Grade Ink Printer Cleaning Procedures --------------------------------10

Introduction --------------------------------------------------------------10

Install the Solenoid Jumper --------------------------------------------11

Clean the System with Water-Based Cleaning Solution -----------13

Rinse and Clean the System Using Alcohol-Based

Cleaning Solution -------------------------------------------------------15

Flush the System Using Water-Based Make-up Fluid -------------16

Prepare the System------------------------------------------------------17

Load the Ink into the System ------------------------------------------18

pH Testing Supplies -------------------------------------------------------------18

Introduction --------------------------------------------------------------18

pH Meter -----------------------------------------------------------------18

Calibration Supplies ----------------------------------------------------19


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Food Grade Addendum

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Food Grade Printer Operation

Introduction

Please take note of the following facts regarding VIDEOJET

WaterBased

Food Grade Inks:

WaterBased Ink types 169210, 169220, 169230, 169240,

169250, 169260, 169270, and 169280 require a special

cleaning and maintenance procedure.

Ink types 169000, 169301, and 169400 do not require a specialcleaning procedure.

VIDEOJET

inks meet specific FDA listed regulations.

Local regulations determine the acceptability of using VIDEOJET

Food Grade Fluids on specific food items. Consult theseregulations for acceptability requirements.

VSI Certification requires that VIDEOJET

inks are used only

with VIDEOJET

makeup and cleaning solutions; use of any

other solution voids certification.

Printer(s) must be ordered new as Food Grade type. Printer(s)

cannot be converted from another ink and still be considered

usable for food grade applications.

Consult VIDEOJET

World Wide Technical Support for specific

applications instructions or information at 8008433610.

The enduser is responsible for the ultimate determination ofapplications compliance with regulatory agency guidelines.


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Recommend Food Grade Ink Procedures

Introduction

This section describes the recommended procedures to thoroughly cleanWaterBased Food Grade Printers at startup, or at selected intervals. It also

lists the general concerns for using Food Grade Inks.

NOTE: This does not apply to ink type 169000, 169301, and 169400.

Notice for Food Grade Applications

TheInkSource fluids shipped to you from our Estes Food Grade Facility are

manufactured in a manner to ensure food grade quality.

The Food Grade Printer and Food Grade Fluid operate as a system and aresuitable for use in specific food applications. Ink formulation for most foodusage is application-specific.

VIDEOJET

recommends the following general concerns be considered when

using Food Grade Inks:

General Concern: Preclude Contaminants from enteringthe System

The fluids manufactured by VIDEOJET

are of the highest quality. Our Fluid

Production Facility ensures the fluids are free of contaminants that could harm

the integrity of the Food Grade Printer installation. As a result, thecontaminants that must be precluded from entering the system are those

present in the installation environment. Typically, these are airborne

contaminants either in the pressurized air used to power the printer, or in the

air surrounding the printhead.

Pressurized Air Supply

VIDEOJET

offers an Air Filtration System designed to remove harmfulcontaminants from the air supply. Typically, each printer will be installed with

its own filtration system. This allows the system to be installed as close to the

printer as possible and provides for easier maintenance.

This system is equipped with a Back Pressure Indicator that senses when thefilter elements require replacing. Replace both the Pre-filter and the Final


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Food Grade Addendum

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Coalescing Filter as required by the indicator, or every two months, whichever

occurs first. When replacing the filters, rinse the filter bowls with CleaningSolution (P/N 169010). Dry the bowls before installation.

Positive Air Flow to Printhead.

To restrict contaminants from entering the printhead during printer operation,

a positive air flow must be maintained at the printhead. VIDEOJET

offers adevice for measuring the air flow through the printhead, and

recommends you

check the positive air flow at the printhead each day or whenever the

printhead is moved. Air flow should be checked with the printhead and

umbilical cord in position. If the air flow rate is not between 1 and 2 scfh, theflow rate should be adjusted.

General Concern: Preclude Environmental Changes thataffect the pH of the Fluid

The Makeup Fluid (P/N 169215) is specially designed to maintain both the

viscosity and the pH balance of the ink system. In order for the system to

perform properly, the operator must follow these recommendations:

Fluid Low Condition

The operator should respond to Fluid Low Conditions promptly. When a Fluid

Low Warning is shown on the display, the operator should immediately

replace the old fluid bottle with a fresh bottle. When the fluid level is low in abottle, air is bubbled through the fluid. This will cause the pH level in the

fluid to change. VIDEOJET

recommends you check the Fluid Level Sensing

System whenever you change fluid bottles.

To check the Fluid Level Sensing System, place the Fluid Dip Tube about one

inch into the fluid bottle. Air bubbles should be seen coming from one of the

tubes at approximately one to two bubbles per second. Then, insert the diptube completely; no bubbles should be seen when the dip tube is completely

inserted.

Manual Set Point Adjustment

Most printers produced by VIDEOJET

have a onesecond bias built into theSet Point. When the system software sets the Set Point after an Ink StreamCalibration, the set point is one second higher than the current ink time. This

condition is proper for much ink, but can cause pH balance instabilities in the

1692xx series of inks. The operator should manually adjust the Set Point tothe current ink time after each Ink Stream Calibration.


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NOTE: For further Ink Stream Calibration information, please referto the Maintenancesection of your printer Service Manual


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Food Grade Addendum

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Limit Idling Time

When the printer is not in production mode, the printer should be turned off.

Do not allow the printer to sit idle for extended periods of time. This practice

will require less makeup fluid, prohibit air from bubbling through the fluid

bottles, and will further reduce the potential for environmental contaminantsto enter the system.

VIDEOJET

recommends the WaterBased Food Grade Printer is thoroughly

cleaned every 14 calendar days. Where the environment contains very highlevels of contaminants or when the recommendations in the above concerns

are not complied with, cleaning may be required more often. The purpose of

this cleaning is to remove any contaminants that may have entered the system.VIDEOJET

has developed a cleaning process to be used with the 1692xx

series of inks. Following this process will help remove contaminants from thesystem.

The pH of the ink and the makeup fluid must be measured each time the

system is cleaned. If the pH of the ink is below 9.3, the ink must be discarded.If the pH of the makeup fluid is below 10.2, the makeup fluid must be

discarded.


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Supplies and Equipment Required for Food Grade Ink

Printer System

Introduction

This section lists the supplies and equipment used in the Food Grade InkPrinter Cleaning Procedure.

WaterBased Cleaning Solution, P/N 169211.

AlcoholBased Cleaning Solution, P/N 169010.

WaterBased Makeup Fluid, P/N 169215.

Food Grade Cleaning Kit, P/N 185312, which includes:

Item Part Numbers Qty.

Solenoid Jumper 185311 1

Module Flush TAdapter 185310 1

Tubing, 0.170 ID x 0.250 OD 206889 16 in.

Tube Clamp 209076 1

Wash Bottle, 250ml 202047 1

Table 1. Food Grade Ink Supplies and Equipment

Inline Filters, 2 each

Final Ink Filter

NOTE: For more information on Inline Filters or Final Ink Filters,please refer to the associated Service Manual.

Gloves, to be worn while working with fluids and fluid

components. Latex gloves (VSI P/N 91807200) may be used or

you may use butyl rubber gloves (P/N 209039, size 10-11, P/N209040, size 7-9) which have been cleaned with AlcoholBased

Cleaning Solution (P/N 169010).


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NOTE: Please, refer to the Material Safety Data Sheet for each fluid.

pH Meter Kit, P/N 185308 or equivalent. Kit includes:

Item Part Number Qty.

pH Meter 209075 1

pH 7 Buffer 209074 5

pH 10 Buffer 209073 5

Rinse Solution 209072 5

Table 2. Food Grade Ink Supplies and Equipment


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Food Grade Ink Printer Cleaning Procedures

Introduction

Follow each of these procedures in succession to properly clean the printer

prior to the introduction of P/N 1692xx fluids into the printer:

Install the Solenoid Jumper: located on page FG-10.

Clean the System with WaterBased Cleaning Solution: (P/N

169211) located on page FG-12.

Rinse and Clean the System using AlcoholBased Cleaning

Solution: (P/N 169010) located on page FG-14.

Flush the System using WaterBased Makeup Fluid:

(P/N 1692150) located on page FG-15.

Prepare the System: located on page FG16.

Load Ink into the System: located on page FG17.

Install the Solenoid Jumper

Introduction

This section describes the installation of the Solenoid Jumper(P/N 185311). This jumper energizes the Makeup Solenoid whenever the Ink

Solenoid is energized. This allows both the ink and makeup lines to be

cleaned at the same time. (Refer to Figure 1 for the following procedure.)

1. Mark the female connectors on the Makeup Solenoid as MakeupTop and Makeup Bottom. Mark the female connectors on the Ink

Solenoid as Ink Top and Ink Bottom.

2. Remove the female connectors from the Makeup Solenoid.

3. Remove the top female connector from the Ink Solenoid. Insert one ofthe male connectors into the female connector. Connect the female

connectors having the same color wires as the male connector to thetop terminal of the Ink and Makeup Solenoids.

4. Remove the bottom female connector from the Ink Solenoid and insertthe other male connector into the female connector. Connect the other

female connectors to the bottom of the terminals of the Ink and Make

up Solenoids.


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Food Grade Addendum

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Removedfrom Ink Top

Removed fromInk Bottom

Make-upSolenoid

To TopInk

BottomInk

TopMake-up

BottomMake-up

Figure 1. Solenoid BankSolenoid Jumper Installation


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Clean the System with Water-Based Cleaning Solution

Introduction

This section describes the recommended procedure to clean the printer with

WaterBased Cleaning Solution (P/N 169211).

1. Drain the system using Auto Drain.

2. Place a service tray under the Ink Module. Loosen the drain valve todrain the module. Then, remove the drain plug, clean it with Cleaning

Solution (P/N 169211), and replace it. (Refer to Figure 2)

3. Rinse a clean jar (or similar container) with Cleaning Solution (P/N169211). Discard this fluid, then pour about 6 ml of fresh Cleaning

Solution (P/N 169211) into the container. Set this container aside.

4. Remove the Ink and Makeup Bottles from the printer. Cap bothbottles. Use the pH Meter Kit (P/N 185308) to determine the pH of theink and the makeup fluid. If the pH of the ink is below 9.3, discard

this bottle of ink. If the pH of the makeup fluid is below 10.2, discard

this Makeup Fluid Bottle.

NOTE: Please, refer to the instructions packaged with the pH MeterKit when determining the pH of the ink and make-up fluid.

5. Clean Ink and Makeup Dip Tubes with WaterBased CleaningSolution (P/N 169211). Then, rinse the dip tubes with AlcoholBasedCleaning Solution (P/N 169010).

6. There are two different ways to perform this step. Use the one mostappropriate for your application.

a. Place quarts of Cleaning Solution (P/N 169211) into both the inkand makeup position;

or

b. Place one quart of Cleaning Solution (P/N 169211) into the fluidpan. Label the Ink and Makeup Lines. Place both lines into the

fluid bottle.

7. Prime the system using Auto Prime.

8. Refresh the system using Auto Refresh (the ink pressure duringAuto Refresh should be 50 psi). While refreshing the system, refer tothe cleaning solution obtained in step 3 and use a syringe to inject

three 2 ml portions of Cleaning Solution (P/N 169211) into the

Catcher.


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Food Grade Addendum

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Figure 2. EXCEL Fluid Pan


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Rinse and Clean the System Using Alcohol-BasedCleaning Solution

Introduction

This section describes the recommended procedure to clean the printer with

WaterBased Cleaning Solution (P/N 169211).


2. Place a service tray under the Ink Module. Loosen the drain valve todrain the module. Then, remove the drain plug, clean it with Cleaning

Solution (P/N 169211), and replace it. (Refer to Figure 2.)

3. Discard the fluid remaining in the jar (or similar container) from step3 of the previous procedure. Rinse the container with CleaningSolution (P/N 169010). Discard this fluid, then pour about 6 ml of

fresh Cleaning Solution (P/N 169010) into the container. Set this

container aside.

4. Remove and store the Cleaning Solution (P/N 169211) bottles(s) foruse during next food grade printhead cleaning.

5. Empty the service tray.

6. Ground the printhead to the service tray.

7. There are two different ways to perform this step. Use the one most

appropriate for your application.

a. Place quarts of Cleaning Solution (P/N 169010) into both the ink

and makeup position;

or

b. Place one quart of Cleaning Solution (P/N 169010) into the fluid

pan. Label the Ink and Makeup Lines. Place both lines into thefluid bottle.


9. Refresh the system using Auto Refresh (the ink pressure duringAuto Refresh should be 50 psi). While refreshing the system, refer to

the Cleaning Solution obtained in step 3 and use a syringe to inject

three 2 ml portions of Cleaning Solution (P/N 169010) into theCatcher.

10.Place a service tray under the Ink Module. Loosen the drain valve todrain the module. Then, remove the drain plug, clean it with Cleaning



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11.Remove the Vacuum Line from the Cap Insert. Attach one end of thetube to the Cap Insert. Place the other end over a service tray. (Refer toFigure 2.)

12.Remove the Return Line from the JTube Port and remove the cap onthe other JTube Port. Then, attach the two short tubes on the Module

Flush TAdapter to the two ports on the jtube. Attach the long tube ofthe TAdapter to the wash bottle containing the Cleaning Solution

(P/N 169010). (Refer to Figure 2.)

13.Holding the wash bottle higher than the module, fill the module withCleaning Solution (P/N 169010). This operation intentionally createsan overfill condition. Continue adding Cleaning Solution until about

100 milliliters of solution has been flushed out of the cap insert. Then,

remove the wash bottle from the TAdaptor and place the open

TAdaptor Tube over the service tray.14.Place a service tray under the Ink Module. Loosen the drain valve to

drain the module. Then, remove the drain plug, clean it with Cleaning


15. Remove the tube from the cap insert. Remove the TAdaptor from theJTube. Restore the Vacuum Line to the cap insert. Restore the Return

line to the JTube Port. Restore the port cap to the other JTube Port.

Flush the System Using Water-Based Make-up Fluid

Introduction

This procedure describes the recommended procedure to flush the system

using WaterBased Makeup Fluid (P/N 169215).

1. Close the rubber tubing connector between the return line and theJTube Port with a tube clamp or a pair of needlenose vicegrip

pliers.


3. Place a service tray under the ink module. Loosen the drain valve todrain the module. (Refer to Figure 2.)

4. Discard the fluid remaining in the jar (or similar container) from step 3of the previous procedure. Rinse the container with Makeup Fluid(P/N 169215). Discard this fluid, then pour about 6 ml of fresh

Makeup Fluid (P/N 169215) into the container. Set this containeraside.

5. Store Cleaning Solution (P/N 169010) bottle(s) for use during nextfood grade printer cleaning.


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6. Change the Inkline Ink, Makeup Fluid Filter and Final Ink Filter.These filters are changed at every other cleaning or at the interval

recommended for normal preventive maintenance, whichever comes

first. While changing these filters, keep your gloves wet with AlcoholBased Cleaning Solution (P/N 169010). (Refer to Figure 2.)

7. There are two different ways to perform this step. Use the one mostappropriate for your application.

a. Place quarts of Makeup Fluid (P/N 169215) into both the ink

and makeup positions;

or

b. Place quart of Makeup Fluid (P/N 169215) into the fluid pan and

label the Ink and Makeup Lines. Then, place both lines into the fluidbottle.


9. Refresh the system using Auto Refresh (the ink pressure duringAuto Refresh should be 50 psi). While refreshing the system, remove

the clamp on the Return Line (refer to the makeup fluid obtained instep 3) and use a syringe to inject three 2 ml portions of Makeup

Fluid (P/N 169215) into the Catcher. Replace the clamp on the

Return Line.

Prepare the System

Introduction

This section describes how to prepare the system.


2. Place a service tray under the Ink Module. Loosen the drain valve todrain the module. (Refer to Figure 2.)

3. Store the Makeup Fluid (P/N 169215) bottle(s) for future use.

4. Remove the Solenoid Jumper, and restore the female connectors totheir original locations.

5. Remove the clamp on the Return Line.


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Load the Ink into the System

Introduction

Ink the system using P/N 1692xx fluids as if the printer has been in extended

shutdown. During Auto Prime, Auto Refresh, and Auto Drain procedure:

1. Close the Return Line with the tube clap or a pair of needlenose vicegrip pliers,

or

2. Keep positive air flow to the printhead and keep the printhead cover onthe printhead.

pH Testing Supplies

Introduction

This section describes the various pH measurement equipment and suppliesoffered by VIDEOJET

. This equipment is used to monitor the pH of

InkSource WaterBased Food Grade Ink and Makeup Fluid during regular

maintenance.

pH MeterThe pH Meter is used to measure the pH level of ink and makeup fluid.

Operation and calibration instructions are printed on the back of the pH Meterpackaging. Retain these instructions for future reference.

The following items are included in the pH Meter Kit (P/N 185308):

Description Qty.

pH Meter 1

pH 7 Buffer Solution Envelopes 5

pH 10 Buffer Solution Envelopes 5

Electrode Rinse Solution Envelopes 5

Table 3. pH Meter Kit


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Calibration Supplies

The pH Meter is calibrated using a pH 7 Buffer Solution and a pH 10 BufferSolution. The Electrode Rinse Solution is used to rinse buffer solutions,

makeup fluid, and ink off the electrode. Electrode Rinse Solution should be

used whenever the meter will be moved from one fluid to another.

The following supplies are available individually:

Description Part Number

pH 7 Buffer Solution Envelope 209074

pH 10 Buffer Solution Envelope 209073

Electrode Rinse Solution Envelope 209072

Table 4. Calibration Supplies

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