Velleman VTSDIR - Manual (Page 5)

VTSDIR
21.03.2011 ©Velleman nv 5
6. Setup
Refer to the illustrations on page 2 of this manual.
Note: never unplug any connection during operation.
• The equipment must be sited on a firm surface at least 1.2M x 0.75M and at a height to suit the operator.
The location should be chosen to suit the flow of work.
• Plug the solder light plug into the socket on the front of the main station.
• Plug the solder light fan into the cooling fan socket [18] and place the solder light in the holder.
• Plug the footswitch into the foot switch socket [17].
• The quartz heaters are secured against shocks with a metal bar and plastic tubes. Remove these and mount
the metal grid in place (refer to Appendix 1).
• Mount the PCB holder (refer to Appendix 2).
• Plug the power cord into the AC power inlet [21].
7. Operation
• The principle of operation of IR rework system is that whilst being heated from above and below, a single
SMD is subjected to similar temperature/time profile during rework as it experiences during reflow in the
original production process.
Note: wait about 5 minutes for the system to warm up after changing a setting.
IR hand tool operation:
• Set the “SOLDERLIGH/TIMER” switch [1] to the SOLDERLIGHT position (I).
• Set the IR Lamp temperature using the “▼” [3] and “▲” [4] keys. Press and hold ±2s to increase
setting speed. Read the temperature on the display [5].
Note: the temperature depends on the type of work (normally about 240°C)
Standard operation
• Press on the footswitch to start the IR heating; release to stop IR heating.
Timer-up operation
• Set the “SOLDERLIGH/TIMER” switch [1] to the TIMER position (O).
• Set the “Time counting” switch [2] to the UP position (I).
• Press on the footswitch to start IR heating; release to stop IR heating. The timer display [9] will count
the number of seconds that the IR heating was on.
Timer-down operation
• Set the “SOLDERLIGH/TIMER” switch [1] to the TIMER position (O).
• Set the “Time counting” switch [2] to the DOWN position (O).
• Set the timer using the “▼” [3] and “▲” [4] keys. Press and hold ±2s to increase setting speed. Read
the time (in seconds) on the display [9].
• Press on the footswitch to start IR heating; release to stop IR heating. The timer display will count
down the number of seconds that the IR heating was on. When 000 is reached, a warning signal
sounds.
Notes:
• Press the reset switch [8] to return the display to 000.
• To determine the reflow time of a new component, first use the timer up operation until it reflows, than
use the timer value for timer-down operation.
Pre-heater operation:
• Set the pre-heater temperature using the “▼” [12] and “▲” [11] keys. Press and hold ±2s to increase
setting speed. Read the temperature on the display [16].
Note: the temperature depends on the type of work (normally about 220°C)
Actual temperature compensation value
• Press on the MODEL button [13] until the display shows “---” (±4s). The temperature compensation is
shown for ±2s.
• To change the value, press the MODEL button [13] again. The value on the display starts to flash and
can be set using the “▼” [12] and “▲” [11] keys.
Note: when the display shows “00” or “-00” the compensation is “+10”.
E.g. When the temperature is set at 200°C and the measured temperature is only 190°C, then the
value must be set to “00” or “-00”. If the measured value is 180°C, than the compensation value must
be set to “+10” (-20 + 10 = 10).
General operation:
CAUTION: to avoid burns, do not touch the heater or PCB directly, use clips or tweezers to pick up or align
components.
CAUTION: do not allow water/liquids/solvents to touch the heater surface to avoid temperature drop cracks
while the unit is still hot. Such cracks can lead to electrical shorts or failure of the heater.
CAUTION: Do not touch the PCB holder to avoid burning your skin during preheat!