3M Scotch-Weld Hot Melt Applicator EC Owner's Manual - Troubleshooting (Continued)
© 3M 2006
17
!
Troubleshooting (continued)
Condition 1:
Applicator
will not heat
3. Check to make sure that power cord is plugged in and that the
electrical outlet has power. If there is no power, contact an
electrician. If outlet has correct power, proceed to the next step.
4. Disconnect the power cord from the electrical outlet, then remove
the temperature module by unscrewing the fastener and lifting out
(see Figure O). Inspect the module for damage to the pins.
If no damage is found, check the resistance between the pins using
an ohmmeter. If the measured value does not agree with that listed
in Table 2, then the temperature module is defective. Replace it by
ordering the appropriate Temperature Module Kit. See Parts Kit list
on page 27 on this manual.
If the measured value agrees with that listed in Table 2, place
temperature module aside for re-use and proceed to next step.
Important:
Remove the power cord from the electrical outlet before conducting any
further evaluations or repairs.
Handle Disassembly
5. Remove the remaining adhesive from the entry track by using a
utility knife to cut off the adhesive stick just before it enters the
white sleeve assembly, and gently remove it.
Refer to Figure P for steps 6 through 8.
6. Remove the stroke adjuster by firmly grasping and twisting upward.
7. Remove the end clip by gently prying off one end of the clip.
8. Slide the transport mechanism off the entry track.
Figure P
Allowable Resistance
Module 1
21-26 K ohms
Module 2
12-16 K ohms
Module 3
3-5 K ohms
Module 4
1-1.5 K ohms
Module 5
0-10 ohms
WARNING
Disconnect the electrical power and
make sure the applicator has cooled
to room temperature before
servicing. Failure to disconnect the
electrical power or failure to allow
applicator to cool before servicing
may cause electrical shock or
burns.
Table 2
Caution
Do not pull adhesive stick from the
rear of the applicator while in
operation. Removing adhesive
from the rear may cause molten
adhesive to flow out the rear of the
applicator which
may cause burns
or damage the applicator.
!