System Set-Up; System Operation; Remove Mode; Attach Mode - Metcal QX2 Manuel D'utilisation

SYSTEM SET-UP

Place the main unit on a suitable workbench where you are not restricted for space
and can operate the unit in a comfortable manner.
If using the optional convection preheater, connect the cables and place the unit
underneath the heater head as described in the preheater instructions on page 9.
Place the work tray (or optional board holder) below the heater head.
Plug the power cord extending from the main unit (and optional preheater) into a
grounded wall socket of an appropriately rated input line voltage.
WARNING: To provide protection against the risk of electrical shock, connect only to
properly grounded outlets.
Connect the cable with phone-style connectors into the jacks on the back of the
controller and the back of the power supply.
Choose a nozzle and vacuum cup suited to your rework task.
Attach the vacuum cup by pushing it onto the vacuum tube. It is not necessary to
hold the tube. (See Vacuum Cup Attachment, p.11)
Attach the nozzle by pressing in firmly into the bottom of the heater head. (See
Nozzle Attachment, p.12)
Click the power switch located on the back of the main unit to the "On" position. The
controller display will show "Metcal QX2" for a few seconds.
The rework system is now set up and ready to rework your first component.
WARNING! PLEASE READ FOR YOUR SAFETY!
The air exiting the heater is VERY HOT. Do not put your hand or any other part of
your body under the heater head when the system is on.
The heater housing, nozzle and vacuum cup are all VERY HOT during and after use
of the system. Do not touch them with your bare hand until they have been allowed
to cool. DO NOT ASSUME THAT THE SYSTEM IS COOL JUST BECAUSE THE
POWER IS OFF . Always allow the system to cool before storage or re-packing.
A fire may arise if not used with care. Be careful when using the QX2 in places where
there are combustible materials. Never use the system in the presence of an explosive
atmosphere. Be aware of your surroundings; heat may be transferred to materials
which are out of sight.
Do not apply heat to the same location for a long period of time, and never leave the
QX2 unattended when in use.
To avoid the risk of electric shock, always plug the system into a properly grounded outlet.
If the supply cord is damaged, it must be replaced by the manufacturer or its service
agent or a similarly qualified person in order to avoid a hazard.
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Copyright © 1999, Metcal, Inc. All Rights Reserved 7036-0541 Rev. A

SYSTEM OPERATION

Airflow, vacuum, and timer are operated with the controller. The controller has a
mode selector switch that allows you to select the mode of operation: Remove or
Attach. There is also a single Start/Stop button that controls the two cycles.
The controller has an airflow selector that allows you to adjust the volume of airflow.
This determines the rate at which thermal energy is transferred from the heater to the
printed circuit board.
The LCD screen on the controller will display the following information:
OPERATION ICON
When the system is operating, the controller will display one of three animated icons:
Indicates the system is operating in Remove mode.
Indicates that removal is complete, but the vacuum cup is still holding the
component.
Indicates the system is operating in Attach mode.
TIME
Depending on the mode of operation, the timer will either count up or down. In the
Remove mode the display counts up and in the Attach mode the display counts down.
The +/- keys allow you to adjust the reflow time.
-/+ Keys
Start/Stop Button
Mode Selector
Airflow Selector
TEMPERATURE
Air temperature is displayed on the right, while cycle time is displayed on the left.
The temperature may be displayed in ˚C or ˚F , and the hot air temperature at the
heater or the temperature of an auxiliary thermocouple may be chosen (see Set-up
Mode & Calibration, p.8).
Copyright © 1999, Metcal, Inc. All Rights Reserved 7036-0541 Rev. A
Operation Icon
Time Display
Temp. Display

Remove Mode

Attach Mode

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