Operation BWP Issue 2.pdf - 第14页

14 Issue 2, Nov 14 Objectiv e OP 7 – Repleni sh Consumables Reference: M achine Operator manual, ProFl ow best working practic es There will be occa sions during production when consumab le items will need to be replenis…

Issue 2, Nov 14

Objective BWP 6 – Run printer in production

Reference: Machine Operator manual

The first few boards printed in the production run will highlight any problems with the setup

of the printer or process hardware. It is important to observe carefully at this stage any

problems that may lead to error messages or defective prints.

Preparation

Tick off each of the following items as you complete them:

By following the procedures in the operator manual and with assistance from your

instructor

 Set a batch limit and zero batch count

 Perform a manual paste knead operation

Questions

Q1. List two situations when a batch limit would be used in production

A1.

Q2. List three occasions when a paste knead should be performed?

A2.

Demonstration

Having completed the preparation phase, perform the following tasks:

 Cycle at least ten boards through the printer

 Ensure that there are no machine error messages

 Ensure that printed boards are free from print defects

Questions

Complete these sentences:

Q3. When the squeegee / ProFlow print stroke is from front to back monitor the stencil to

ensure that __________________________.

Q4. When the squeegee print stroke is from back to front ensure that ____________

_________________________________.

Comment [t6]: Page: 14

To remind the operator to check the

quantity of paste on the stencil

to stop the machine whilst a board is

being manually inspected

Comment [t7]: Page: 14

At initial paste load, after paste top-ups,

after an auto paste dispense, after a

prolonged period of inactivity (NOTE:

AUTO KNEADS MAY BE SETUP IN

THE PRODUCT FILE TO COVER

THESE EVENTUALITIES)

Comment [JS8]: The stencil is clean

(a dirty stencil suggest a tooling

problem or damaged blades

Comment [JS9]: the material is rolling

and there is sufficient roll volume

Issue 2, Nov 14

Objective OP 7 – Replenish Consumables

Reference: Machine Operator manual, ProFlow best working practices

There will be occasions during production when consumable items will need to be

replenished. Performing this task efficiently will minimise machine downtime and loss of

production.

Preparation

Tick off each of the following items as you complete them:

 Review the machine operator manual for the replenishment procedures

 Watch as your instructor demonstrates the correct method of replenishing the

consumables

Q1. What visual indication is displayed on the printer to indicate that a consumable

requires replenishment?

A1.

Q2. If a consumable requires replenishment will the printer automatically stop production?

A2.

Demonstration

Having completed the preparation phase, now complete the actions below. Tick off each

item as you complete them:

 Replace under screen cleaner paper (if applicable)

 Replace Vortex filter (if applicable)

 Fill the solvent tank and prime solvent (if applicable)

If you are using Squeegees …..

 Replace paste dispense cartridge (if applicable)

 Top up paste manually

If you are using ProFlow …..

 Replace ProFlow cartidge (if applicable)

 Re-fill re-chargeable head (if applicable)

Comment [t10]: Page: 15

Amber and green on the tri-colour beacon and a

warning message on the screen / DUI

Comment [t11]: Page: 15

Depends on the way the machine is configured in set

prefs; Warn, pause or suspend

Issue 2, Nov 14

Objective BWP 7 – Consumable best working practices

Reference: Operator best working practices

Experience has shown that there are tips and techniques that can be used to minimise the

disruption caused to production throughput when replenishing consumable materials.

Preparation

Tick off each of the following items as you complete them:

 Review the replenishment section in the best working practices manual

Demonstration

Tick off each of the following items as you complete them:

 Complete the table below listing the consumable items that you will be responsible

for replenishing

 Identify the BWP which you can employ

Consumable

BWP’s

Comment [JS12]: USC Paper, USC

solvent, USC general condition, Print

material

Comment [JS13]: Keep a spare roll

of paper close to machine, when

changing paper check condition of

pipes and cables and usc blades, keep

a funnel close to machine, remove

solvent spills immediately, do not mix

solvent types, make small top ups of

material regularly rather than large top

ups, ensure that adequate quantities of

acclimatised material is readily

available.

Comment [t14]: Page: 11

Plugged in,Switched on,Temperature

matches production data sheet,Hose

routed correctly

Plugged in,Switched on

Free from damage,Clean

Surface clean and free from debris

Spare roll next to machine,Adequate

quantity of paste being acclimatised