HARRICK ATC-024-2 - Appendix B; Trouble Shooting

APPENDIX B
17 of 17
TROUBLE SHOOTING
If the front panel fails to light up:
• Check if the power outlet fuses are blown (see
Table 2 for the replacement fuses).
If the ATC fails to heat your device:
• Check if the fuses are blown (see Tables 1 and 2
for a list of replacement fuses).
• Check if the heaters are still operational by
measuring their resistance with an ohmmeter,
To measure the resistance of the heaters:
• Disconnect the heated accessory from the
temperature controller.
• Connect an ohmmeter across the two pins on the
heater connector as indicated in Figure 4.
• Heater failure is indicated by an open circuit or a
short. An undamaged heater will measure a few
ohms, as indicated in Table 3.
Figure 4 • Heater Connecto
r
of the Heated Accessory
ACCESSORY APPROXIMATE
RESISTANCE (ohms)
CHC 5.9
DER 3.0
FAS-TCC 6.2
FATIR 5.4
HPL-TC 3.0
HTC 2.5
HVC 5.9
RANGEIR 5.4
RGR 3.4
SEA-HLC 17.9
SEA-HOT 8.4
TFC 3.0
TGC 3.0
UNS-HOT 6.0
HON-FSL, FLL, FSS, FLS 4.0
Table 3 • Heater Resistance Values for Various Accessories
Pins