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Withdraw the lamp from the housing. Fit replacement lamp taking care to handle only the outside edges of the
glass reflector. If the bulb within the lamp is touched then the lamp may fail prematurely.
Refit lamp housing to top of lens unit and secure clamp screw.
Main Equipment Maintenance (continued)
Cleaning the IR Lamp Pins
The lamp contact pins should be cleaned with mild abrasive paper if there is evidence of pitting or corrosion. Lamp
socket should be changed every two months to avoid corrosion problems.
Calibration Procedures
All PDR systems leave our factory calibrated, working and in excellent overall condition. After careful installation by
PDR approved personnel, your system should be in the same original condition. Of course, during normal working
use the systems will eventually need cleaning, re-adjusting and calibrating. Calibration procedures include the
following,
Controller
Check all functions work
PC serial communication - RS232C - T5 Controller – use the correct USB/Serial adapter
vacuum (working and effective - the pick-up nozzles may need cleaning with IPA alcohol)
Backheat (working and effective - quartz heater panels should glow slightly at full power)
Topheat (working and effective - measure IR lamp voltage at full power)
There is a measuring point inside the top of the lens unit. Undo 3 screws to open the top panel to reveal a ceramic
connector block. With a ‘true RMS voltage meter’ such as a Fluke 87, measure the lamp voltage at full power. It
should measure between 14-15 volts d.c for the T5 controller.
TRIAC operation - check you have variable control over Topheat and Backheat. Set both to 50% and observe a
reduction in output from full power.
Thermocouple inputs - use a thermocouple simulator to input known temperatures (100°C and 200°C) and
check readings are /- 2°C. The PDR Rework system uses software - calibration adjustments can be made
there - see settings screen, thermocouples.
IR Sensor - we heat a metal plate, coated with a high-temp matt black paint (such as barbeque paint), to a
known temperature (100°C) and aim the sensor at the black surface. The sensor should not go out of setting
and should be /- 2°C.
