Nordson ProBlue P4 Manuel page 138

6‐18 Troubleshooting
DP.5 Check the Resistance of the Tank and Manifold Heaters
Part 1024496_05
6. Using two wrenches, loosen the nuts that hold the power harness leads
to the tank or the manifold heater terminal posts.
7. Individually check the resistance between the chassis and each tank or
each manifold heater terminal post, and then do one of the following:
S
If the resistance is greater than 1 Meg ohm, replace the power
harness (P/N 1024529).
S
If the resistance is less than 1 Meg ohm for the tank heater, replace
the tank. If the resistance is less than 1 Meg ohm for the manifold,
replace the manifold heater. Refer to Section 7, Parts.
8. Remove the front and rear panels from the melter. Refer to Section 5,
Cleaning the Melter, for the procedure to remove the panels.
9. Measure the resistance across the tank heater posts and the manifold
heater posts terminals, and then do one of the following:
S
If the resistance is within the range shown in Table 6‐6, replace the
power harness (P/N 1024529).
S
If the resistance is not within the range shown in Table 6‐6 replace the
tank or replace the manifold heater.
NOTE: The tank heater cannot be replaced independently.
(contd)
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