Troubleshooting
6-4
Part 1073401_07
E 2021 Nordson Corporation
Pump Operating Variables
When diagnosing apparent melter malfunctions, it is helpful to understand
the following variables that control the status of the pump—enabled,
disabled, running—and the associated indication that is provided by the
pump LED.
S Use/activation of a remote input to control the motor
S Use of parameter 8, Automatic Pump On
S Ready status of the melter
S Activation of a switched input (hand‐held applicator or footswitch)
S Activation of the pump key
Table 6‐2 provides the status of the pump LED for each combination of the
pump operating variables.
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