Air-Vac PCBRM15, User Manual

Page: 52 / 120

PCBRM15 & PCBRM System 5.2 User’s Manual Chapter 4: Processes & Applications
Part No. 4005.00.906
4-10
4.8 Temperature Controller (Watlow)
Programmable Set Points. The Programmable Digital Readout Temperature Controller has two set
points that are programmable. “Set point one (SP1)” is the process temperature; “set point two (SP2)” is
the standby/interlock temperature.
Process Temperature (SP1). The process temperature determines the temperature of the flowing solder
during the rework and soldering cycles. The controller is connected to a thermocouple located at the
bottom of the solder pot. The actual temperature contacting the bottom of the printed circuit board is
approximately 10
°
F less than the process temperature, which is factory set at 500
°
F.
Standby/Interlock Temperature (SP2). The standby/interlock temperatures are the same
temperature. The standby temperature minimizes oxidation by automatically reducing the temperature
when the module is not being used. The purpose of the interlock temperature is to prevent the pump
motor from operating until the solder reaches a molten condition. SP2 is factory set at 70
°
F less than the
process temperature (500
°
F - 70
°
F = 430
°
F).
1. Actual Temperature (110)
2. Process Temperature (500)
3. Standby/Interlock Temperature
(-70)
4. Overtemp Temperature (617)