PH-20/PHX-20 Manual
30
TROUBLESHOOTING
CAUTION! If the rod that is used in conjunction with the thermocouple is
defective do not operate the heater until the rod is replaced.
INDIVIDUAL OHMS MEASUREMENT
Hydraulic Drive System
Follow the recommended procedure in the indicated order to solve the problem and
avoid unnecessary repairs. Make sure all Switches are in the correct position and
Indicator Lights ON before determining the existence of a fault.
WARNING! Before correcting any kind of defect, make sure the Main Power
Switch is OFF and incoming power is locked OFF. NEVER access the inside of
the Control Panel with the Proportioner power supply ON. The Hydraulic Unit is
a component that works under pressure. Do not open any connection or carry
out maintenance on components subject to pressure until all pressure has been
bled to zero.
CAUTION! Do not attempt to reset the Motor Contactor more than twice.
Failure of the Motor Contactor safety mechanism will occur and the Contactor
will become inoperable and/or the Motor damaged. The cause of the problem
must be determined and corrected.
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