Cosmo LS-1866 User Manual

82 12 MAINTENANCE AND TROUBLESHOOTING
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Errors are detected in either the power-on check procedure, or during execution of a leak test. If an error is
detected, error code will be displayed on the leak rate indicator along with blinking No-Go LED and beep
sound. An ERROR signal will be transmitted through the control I/O port. Pressing STOP key clears the
error display and signal.
12.4.1 Errors and Treatment
No.
Display
Description
Treatment
1
E-1
Flash memory error
Replace the CPU board.
2
E-2
DPS Oscillation stop
Sensor electric source, cable disconnection, electric circuit
damage.
Repair by manufacturer required.
3 E-3
Excessive DPS
zero-point shift
Check and adjust the stop zero point.
(See Section 12.4.2. → )
Water,
oils, or other
contamination in DPS
After checking and adjusting the stop zero point, repeat the
charge hold to check the zero point several times If the stop
zero point tends to shift or lack of repeatability, DPS may be
contaminated. Have a Cosmo representative replace DPS.
Detected in DL1 stage.
4
E-4
Improper test pressure
Test pressure may be out of range of the pressure switch.
Check the test pressure switch settings on the gauge Adjust
the test pressure or reset the test pressure limits.
(See Seccion12.4.3 → )
Detected at the end of CHG stage.
5
E-5
Air-
operated valve
Inactive
Verify that the pilot pressure is regulated at least 400 kPa
(See Section 12.4.4 → )
Detected in CHG or DL3 stage.
6
E-6
A/D Converter error
Exchange of CPU board.
7
E-7
DPS output saturated
Check the DPS offset
No-Go judgement will be made ERROR signal won’
t be
transmitted.
Detected at the end of DET stage.
8
E-8
I/O Output error
Cable disconnection, electric circuit damage. Repair by
manufacturer required.
9 E-9
Pressurization valve
error
Pressurization valve AV1 not closed. Air operated valve AV1,
pilot pressure solenoid valve error. Repair by manufacturer
required.
The LO NO GO LED will light when a static memory (SRAM) error is detected. In such case the CPU board
must to be replaced.
12.4.2 E-3: Excessive Differential Pressure Sensor Zero-point Shift
When leak test is repeated without unclamping, the excessive DPS zero-point shift may occur. This tends
to occur when the volume of the tested part is so large or the tubing is so narrow that the air inside the tested
part is not completely exhausted, resulting remaining pressure is detected during DL1 stage in the following
test. In such case, delay the input of the next START signal or extend the DL1 timer to let the tester
exhaust completely. The monitoring function may also be disabled with a memory switch
(see Section 10.2.3 → )

Cosmo LS-1866 Specifications

General

Brand	Cosmo
Model	LS-1866
Category	Test Equipment
Language	English