Kval DL-2, Instruction Manual

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DANGER
The following checks will require the electrical panel to be energized these
trouble shooting checks MUST BE PERFORMED BY A QUALIFIED
ELECTRICAL TECHNICIAN.
1. Remove lock and tag outs on the main power sources
2. Manually close disconnect switches and energize the control circuit or
transformer with its respective switch. Observe that the numbers 1, 3 & 4 are
lit on the white lighted terminal strip.
3. This tells you that there are no overloads or emergency stops tripped. On
computer controlled units, make sure that the POWER and RUN lights are lit
at the lower left of the computer.
4. Most electrical problems are related to mechanical malfunction (i.e. stuck
motors, jammed chain, non tripped limit switches, etc...) The most common
failure is an improperly adjusted limit switch. To check a limit switch,
manually operate the limit switch. If the computer terminal strips lights, the
switch needs to be re-adjusted. For more information on the limit switch see
the manufactures information at the end of this manual.
5. If a solenoid valve is suspected, and not cleared in the air checks section
mentioned previously, it can be electrically jumped to check operation.