Edwards T-Station 75

D395-93-880 Issue A
Page 28 © Edwards Limited 2011. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
5.5 Error numbers
If an error is detected by the controller the display will show "Err" followed by a number. Refer to the table below
for a description of the error together with likely causes and suggested remedies.
The backing pump
is noisy
Refer to the fault finding section of the
Backing pump manual. See Section 1.2.2.
The backing pump
is leaking oil
The turbo pump is
very noisy or there
is excessive
vibration or both
Refer to the fault finding section of the Turbo
manual. See Section 1.2.2.
Table 10 - Error numbers
Error
Number
Meaning Possible cause/remedy
Controller errors
1 EEPROM error The internal EEPROM checksum has failed. All user settings will
revert to the factory default.
2 ID reference error The reference used for identifying gauges is incorrect. Please
remove all gauge connection, turn the electrical supply off and on,
and wait for 30 seconds before connecting gauges.
Gauge errors
11 Gauge voltage too high The voltage from a gauge is too high. The gauge may be defective.
12 Gauge voltage too low The voltage from a gauge is too low. The gauge may be defective.
21 WRG Pirani failure Errors specific to WRG. Please refer to the WRG manual for details.
Press the ENTER key to clear the error from, the display once the
fault has been corrected.
22 WRG magnetron short
23 WRG striker fail
24 WRG magnetron not struck
25 APGX filament failure Errors specific to APGX. Please refer to the APGX manual for details.
Press the ENTER key to clear the error from, the display once the
fault has been corrected.
26 APGX cal err
27 APGXH tube not fitted
Pump errors
41 Turbo pump fault Inspect the LEDs on the turbo pump podule for status information.
For more detailed fault codes, press and hold the ENTER key (whilst
Err41 is showing) to display the turbo pump system status word.
The lower 16 bits of the status word are displayed in hexadecimal.
Press the START / STOP key to clear the error message.
Refer to the instruction manual of the turbo pump for detailed fault-
finding.
Table 9 - Fault finding (continued)
Symptom Check Action