20
Attach the nozzle and securely tighten the nut with the attached heat resistant pad.
WARNING:
If the nut is loose, air will leak and the temperature will drop.
9.2.3 Trouble Shooting Guide of the De-soldering Gun
Warning:
z
Disconnect the power plug before servicing. Failure to do so may result in electric shock.
z
If the unit is damaged, it must be maintained by the manufacturer, its service agent or similarity qualified
person in order to avoid personal injury or damage to the unit.
1. The solder in the junction is not sufficiently melted
Check 1: Temperature is not high enough.
The following parts require a greater heat capacity to de-soldering.
Multi-layer PCB, bilge PCB, frequency modulation of PCB’s grounding wire, semiconductor
PCB, dual way and three terminals switch part with transmitting heat
、
big type semiconductor
terminal etc.
Check 2: Nozzle is worn out.
When the nozzle begins to wear out, the heating efficiency begins to decline. Check the nozzle.
If the solder plating is damaged, or the nozzle is eroded, replace the nozzle.
2. Suction capability is dropping
Check 1: Replace the filters, and clean the nozzle and the inside of the heating element.
Please refer to the “5.5.2 ”.
Check 2: Air is leaking from the vacuum system.
Air leakage cannot be determined from the indicator. Check the air-tightness of the following
parts and replace that are worn.
(1)
Contact point of the nozzle and heating.
(2)
Front holder and nearby parts.
(3)
O-ring in the back holder.
(4)
Soft Hose.
(5)
The tie-in of fixing pipe.
(6)
Packing and nearby parts.
Check 3: Clean the nozzle with the clean sponge and then coat a fresh solder on the plating
of the nozzle.
3. LED display does not light up.
Check 1: Is the power cord plugged in correctly？
For the above part, suggest use the PCB pre-heater device. Make the temperature
of the PCB heat up to a certain temperature that will not damage the PCB or the
other component, after that, de-soldering. Do not only increase the temperature of
the gun, otherwise too high temperature may damage the PCB and its components.
Summary of Contents for QUICK 713
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