RKI Instruments GD-K77D - Manual (Page 42)

37 • Troubleshooting Model GD-K77D Operator’s Manual
Troubleshooting
Trouble Alarm: Flickering PW/TR Lamp
When the PW/TR lamp is flashing, this indicates a trouble condition. The following are
typical trouble conditions:
Prevention
A trouble alarm may result from disconnected wiring or short circuits between the Model
GD-K77D and devices connected to it. To reduce the reduce the possibility of a trouble
alarm, do the following:
• Check the wiring on the Model GD-K77D as well as the wiring on all peripheral
equipment.
• Check the wiring on the detection system.
• Check all tube connections.
Table 4: Trouble Alarm: Condition, Cause, and Remedies
LED Condition Cause Remedy
E-00 System Fault Memory Problem in the
Detector Call RKI Instruments, Inc. for assistance.
E-01 Sensor Fault Connector Contact
Failure or Sensor Cable
is Disconnected Check the sensor cable to make sure that it
is properly connected to the sensor and to
the amplifier board.
For further assistance, contact RKI Instru-
ments, Inc.
E-04 Zero Follower
Fault Usually High Zero Drift Calibrate the Unit.
Replace the Sensor.
E-05 Low Flow Clogged Filter or Dete-
riorated Pump Check the flowmeter to make sure the flow
ball is between the two red flow lines. Adjust
the flow rate if required.
The dust filter may be clogged. Examine the
dust filter; clean or replace it as required.
Check that the Model GD-K77D is mounted
firmly or that the fixing screw is fastened
securely.
The tubing on the gas-in or gas-out side of
the Model GD-K77D may be clogged or bro-
ken. Check and repair the pipes as required.
The Model GD-K77D’s pump may need to
be replaced.