Siemens KION Service Manual page 75

KION / KION-i
System volume 1. Added volume
(ml x 0.1) 2. Leakage
1. No. of tests
Technical
2. No. of attempts
error code
3. Test period (sec x 0.1)
End
Start
pressure
pressure
(cm H O x 0.1)
(cm H O x 0.1)
2
2
Fig. 1 Values showed on the control panel during
the leakage checks
Pressure overshot
due to tight system
Pressure
41
40
1. Flow puffs
2. Pressure Puffs
3. System emptied
and pressurized
4-5. Volume calculations
6. Flow cutoff (41 cmH2O)
7. Pressure stabilization time 10 s
9. Time to get below 41 cmH2O
Fig. 2 Pressure diagram – System without leakage
∆
Pressure
P=1 cmH2O
(example)
42.6
42
41
40
39
4-5. Volume calculation
at 40 cmH2O
7. 1st pressure stabili-
zation time 10 s
∆
8. Calculation of P to
41 cmH2O, restart from Step 3
6. 2nd flow cutoff 42.6 cmH2O
7. 2nd pressure stabilization time 6 s
9. Time to get below 41 cmH2O
Fig. 3 Pressure diagram – System with leakage,
the leakage check will be interrupted
E382 E392E 061 01 02 02
Technical
error code
10. Start 12. End
pressure
Pressure
Time
11.Measuring
time 20 s
End pressure
Start pressure
∆ ∆
P+ P/8+0.5
Time
Measuring
time
Siemens-Elema AB
8. If there is a leakage in the system and the
pressure drops below 41 cmH2O during this
period:
• System is emptied.
• A new higher initial pressure, based on the
pressure drop, is calculated (max 60 cmH2O).
• The stabilization period is decreased by 4 s
(but always not less than 1s).
• Re-run from the beginning (Step 2), but
without volume calculations.
• If the pressure drops below 41 cmH2O five
times in a row, a technical error code 9907
will be displayed and the check will Fail.
Diagnostic 261, subdata ...26 B3.
9. Additional stabilization period ending when the
pressure drops below 41 cmH2O or stabilization
period time has elapsed.
10. Registers the Start time and measures the Start
pressure (P1) before the leakage calculation
begins.
11. Leakage measuring period of 20 s or until the
pressure drops below 39 cmH2O.
If End pressure is 1 cmH20 higher than Start
pressure (P1), a technical error code 9905 will be
displayed and the check will Fail.
Diagnostic 261, Sub-data ...26 B1.
12. Registers the End time and the End pressure (P2).
13. The system calculates "leakage flow" by
measuring pressure difference (P1 - P2) over the
measuring time (Start time - End time).
Leakage = System volume x (P1 - P2) x
(1013 + Start pressure)
Service procedures
5
60
Meas. period
5 - 3