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semi automatic &21680$ %/(5(3/ (1,6+0 (176 3$67(/2$ ',1* 8.4 User Manual Software Version 0 7SP02 6. Press the Continue (F1) button. Paste Removal During continuous pri nting operations p aste residue build up…

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semi automatic
&21680$%/(5(3/(1,6+0(176
3$67(/2$',1*
Software Version 07SP02 User Manual 8.3
4. Load the solder paste onto the screen.
5. Lower the printhead cover.
6. Press the System button.
7. Press Continue (F1).
8. Press Exit (F8).
Paste
Replenishment On
NOTE
With the Paste Dispenser not fitted, the paste dispense rate (in the product file)
pauses the machine after printing the amount of boards specified. This allows
the operator to open the printhead to load paste on to the stencil. The paste
dispense rate can be set from 1 to 100 boards. If 0 (zero) is entered, the
operator is not be reminded to replenish the paste.
1. When the machine has printed the amount of boards specified in the Paste
Dispense Rate setting, the machine is stopped and the message ‘Open
cover and load paste’ is displayed in the Message Prompt Window of the
MMI. The following menu bar is displayed.
NOTE
Selecting the Continue (F1) button restarts the printing without the oppor-
tunity to replenish the paste.
2. Raise the printhead cover.
3. Load the solder paste onto the stencil.
4. Lower the printhead cover.
5. Press the System button.
Continue
Auto
Dispense
Manual
Load
Load
Cart.
Print
Directn
Exit
Continue
semi automatic
&21680$%/(5(3/(1,6+0(176
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8.4 User Manual Software Version 07SP02
6. Press the Continue (F1) button.
Paste Removal During continuous printing operations paste residue build up may occur with the
same screen in use and with the squeegee option fitted. This build up can affect
the print quality of the print process, ie paste in apertures, paste ‘tramlining’ on
the screen and residue on the squeegees.
Before loading paste the operator should ensure that any residue is cleaned off
the screen and squeegees.
To clean the screen effectively, it is recommended that the operator removes
the screen from the machine during this operation (see Operator manual -
Product Change over).
WARNING
RECOMMENDED SOLVENTS. ANY SOLVENTS USED MUST COMPLY WITH
LOCAL ENVIRONMENTAL GUIDELINES. DEK RECOMMEND USING SOLVENTS
THAT ARE ENVIRONMENTALLLY FRIENDLY, IE CFC FREE AND WATER BASED.
SOLVENTS USED MUST HAVE FAST EVAPORATION RATES AND FLASHPOINT
SPECIFICATIONS GREATER THAN 39ºC.
WARNING
SOLDER PASTE AND SOLVENTS. WHEN USING OR HANDLING ANY SOLDER
PASTE OR SOLVENT FORMULATION THE MANUFACTURERS’ RECOMMEND
SAFETY PRECAUTIONS MUST BE STRICTLY ADHERED TO.
WARNING
PROTECTIVE CLOTHING. APPROVED PROTECTIVE CLOTHING SHOULD BE
WORN BY SOLDER PASTE AND SOLVENT HANDLERS AT ALL TIMES TO
ELIMINATE FUME INHALATION, EYE CONTACT, SKIN CONTACT AND
INGESTION.
Remove paste from the screen and squeegees with a spatula and place in a
suitable container. Smear deposits are removed using a suitable cleaning cloth
dampened with a suitable solvent.
NOTE
Waste paste and contaminated cleaning cloths are to be disposed of in accord-
ance with local authority regulations.
Continue
semi automatic
&21680$%/(5(3/(1,6+0(176
3$67(/2$',1*
Software Version 07SP02 User Manual 8.5
Auto Dispense An alternative to manual loading of solder paste to the screen is given with the
provision of an automatic paste dispenser. This is mounted to the rear of the
print carriage.
The paste dispenser uses either a 1 Kg or 500g cartridge. The 500g cartridge
requires the fitting of a sleeve which is an option. This enables any loading of
paste to be carried out without the need for the operator to handle the paste.
A slug inside the cartridge, travels down the cartridge as the paste is used. A
proximity sensor fitted to the side of the dispenser detects the metal content of
the paste. When the cartridge is empty the sensor initiates a ‘Print Medium
Low. Please Replenish’ warning window to the operator.
Programming into a
Product File
The paste dispense parameters can be setup when editing a product file for a
new product, although it may be more convenient to set these after the product
has been run for a while and paste requirements have been determined.
The parameters to be edited that affect the operation of the paste dispenser are:
Paste Dispense Rate:
• This determines the frequency of the cycling of the paste dispenser. The
setting is gauged by running the product and noting the number of prints
before paste replenishment is required. This can be set to any number
between 0 to 100 in increments of 1.
Paste Dispense Speed:
• This determines the speed at which the paste dispenser travels across the
screen and hence the amount of paste which is dispensed. This parameter
needs to be set in conjunction with the Paste Dispense Rate. This can be
set to any number between 10mm/s and 100mm/s in increments of 1mm/s.
To Enter Paste
Dispense
Parameters From
the Status Page
1. Press Setup (F6).
Run
Open
Cover
Paste
Load
Clean
Screen
Setup Monitor Maint.