Air-Vac PHS1500, Руководство пользователя

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PHS1500/4000 User’s Guide
1029.00.902 13
2.1.4 PCB Temperature Safety Feature
If the IR probe or a taped on thermocouple is used to monitor the PCB temperature, the Board Temper-
ature controller has a feature that shuts off the heater power once the thermocouple gets to the board
temperature set point. While some oscillation of the board temp will occur, the feature is intended as a
safety to prevent an unattended PCB from overheating significantly.
- The actual tone (if used) or the Alert LED are intended to tell the operator when to remove the PCB
from the preheater once the programmed temperature has been reached.
- The preheater will not heat unless either a thermocouple or the optional IR Probe is plugged into the
thermocouple port and the displayed temperature is below the board temperature setpoint.
Caution: Never leave a PCB in the preheater unattended as over heating and possible damage / fire
could result.
2.1.5 Cooling Operation
The Cooling option is an air knife that provides a blanket of cool air between the heater plate and the
board being heated. To activate the cooling air, use the toggle switch on the front panel as required. The
pressure to the air knife can be adjusted by the regulator on the rear of the preheater. It is initially set at
the factory to 50 psi.
2.1.6 Use of the Arm Guard
The front arm guard is provided to help prevent operator’s arms from contacting hot surfaces of the
heater, enclosure or board being worked on. The arm has 2 positions. The forward most position is suit-
able when working an area close to the front of the preheater. This is also the lowest position. The rear
position is a higher position and further rearward for when it is necessary to work on an area that is in the
back of the board.
Front Position
Rear Position
Locking Knob