Table of Contents
Advertisement
Operating Procedures
Operation Adjustments
Air Supply Adjustment
The air pressure to the controller and material supply
regulator is typically 70 psi (4.8 bar). Do not exceed 100
psi (6.9 bar) pressure to the dispense valve. However,
the material supply pressure must be adjusted accord-
ing to the type of material being dispensed. Too low a
pressure will give you an inconsistent dispensed volume
because the material does not have sufficient pressure
to flow smoothly through the needle. Too high a pres-
sure may cause material separation or packing. Use the
minimum pressure needed to obtain smooth material
flow during the purge cycle.
Material Output and Snuff-Back Adjustment
The material output depends on the material pressure,
size of needle, and the rate at which the dispense valve
is moved by the system to which it is attached.
NOTE: The Adjustment Screw (27) is used to adjust the
maximum height setting of the Piston Rod (4) to the
Needle Seat (1) and is not intended to be used as a flow
control adjustment. See the Dry System Check (seen on
the previous page) for more information.
Dispense Needle Height Adjustment
Ideally, the material should just contact the work piece
enough to create an adhesive bond and cause a clean
separation of the material from the needle tip upon com-
pletion of the dispense cycle.
12
332094C
Advertisement
Table of Contents
