Hartridge CRi-PC Operating And Servicing Manual page 107

HARTRIDGE LIMITED
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Motor Circuit Breaker
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Main Guard Open
HL037 (EN), Issue 13, AT714, 05/14
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Any technical intervention requires certified Hartridge training. Contact Hartridge Ltd for details.
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Indicates that the circuit breaker supplying the CR pump
drive motor has tripped.
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Indicates that the test area door is not closed. This is
only an indication of a fault if it is believed that the door
is closed. The machine cannot be run without the guard
door closed.
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Table 5.2 Interlock Status Indicators
CRi-PC Operating and Servicing Manual
operating correctly.
Check the filter between the circulation pump
and the clean tank is not blocked.
Check the filter between the main tank and the
circulation pump is not blocked.
Check for any leaks around the circulation pump
and any associated pipes.
Check for any blockages or restrictions in the
fluid circulation pipes.
Check the overload is set correctly for the
electrical supply to the test stand (refer to the
circuit diagram, sheet 4, thermal trip settings).
Check for causes of motor overload – eg: CR
pump seized, excessive rail pressure due to
faulty feedback from the pressure sensor on the
dump valve or restricted motor cooling fan.
Check the guard is closed. If OK suspect a
faulty guard interlock switch
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