Maintenance And Service - Metcal HCT-900 Guia Del Usuario

4. Removing & Replacing Components
De-Soldering Components
1. Select the proper nozzle, secure it to the handle
2. Plug power cable into electric socket and switch on the power
button
3. Set the desired temperature. Adjust the airflow to desired volume.
4. Move the nozzle close to the component leads; maintain 3-5 mm
distance. Use the hot air to melt the solder.
5. When solder is molten, use a tweezer or other suitable tool to
remove the component from the circuit board
Soldering Components
1. Choose the proper nozzle, secure it to the handle.
2. Apply the right amount of solder to the circuit board; position the
component on the circuit board.
3. Plug power cable into electric socket and switch on the power button.
4. Set the desired temperature. Adjust the airflow to desired volume.
5. Move the nozzle close to the component leads, blow hot air onto the leads and melt the solder.
Please visit Metcal's web page (www.metcal.com) where you will find additional information on systems,
accessories, technical notes, and more.

5. Maintenance and Service

To Change Heater Element
Remove three screws
Remove air tube from the
back of the handle
a) Remove black air tube from the back of the handle.
b) Remove the three screws that secure the handle.
c) Separate hand piece.
d) Unplug heater connector and disconnect thermocouple wires.
e) Slide heater element out of heater pipe.
f) Insert new heater element into heater pipe.
g) Plug heater connector and connect thermocouple color wires properly.
h) Re-attach handle together and ensure good fit. Then install screws.
i) Insert black air tube back into place.
Changing the fuse
1. Unplug the power cord from the outlet socket
2. Change for new fuse (located on back panel): a) HCT-900-21: Slow Acting 4A, 250V (0.5 mm x 20 mm). b)
HCT-900-11: Medium Acting 6.3A, 125V (0.5 mm x 20 mm). c) HCT-900-10: Medium Acting 6.3A, 125V (0.5
mm x 20 mm).
CAUTION:
shock
disconnect
supply before replacement of
heating element.
3
Heater Element
Heater Tube
Thermocouple wires
Heater Connector
Risk of electric
–
from line voltage
from electrical