Training Guide Course No. 196514
Level 2 Maintenance, X-1000 Series Dispensing Systems 2-128 P/N 196515 (Revision A)
Exercise Sheet 2-14-2
Temperature Testing Part Heaters and Needle Heaters
1. Check all air and electrical connections to the Heaters.
2. In the Heater Control Window, locate the loops (channels) for the Heaters
installed on your system and verify the messages for all the Heaters read OK
(See Diagram Sheet 2-14-3 on page 2-127).
If the Heater Control Window shows an open loop message (T/C Break),
open the dispensing system Hatch and recheck all Heater connections. Then,
close the Hatch and repeat this step. If the open loop message still appears,
refer to “Troubleshooting Conveyor” in the
Troubleshooting
section of this
manual before proceeding.
3. Set the Heater temperature to the set point (SP) specified in Table 5-3.
Heater Type
Set Point
(°
°°
°C)
Set Point
(°
°°
°F)
Impingement and Contact 80 176
Needle 40 104
4. When all loops have been configured, go to the On/Off column and double click
on the gray-shaded icon next to each loop.
The icon will become yellow and red indicating that it is in the ON state.
5. Wait for the temperature in the present value (PV) column to reach the set point
(SP) temperature.
6. Measure the temperature of the Heaters as follows:
For Heater Tooling, use a calibrated temperature probe on the top surfaces
of each Heater to verify it is achieving the set point temperature. Read and
record temperatures at both ends and the middle of each Heater.
- The variance in temperature from left end of the Heater to the right end
should be ±5 °C (±41 °F).
For Needle Heaters, insert a calibrated temperature probe into the fluid-
heating chamber of the Dispensing Valve.
- The temperature should ramp up and achieve a steady state temperature
within ±1°C (±34 °F) of the set point.
7. Calibrate the Heaters as detailed in Exercise Sheet 2-14-6 on page 2-132.
The Heaters will be hot and can cause serious injury. Use
extreme caution when measuring heater temperature and
checking connections.
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