LTV 1200 - Flow Valve Calibration Worksheet

Page 6-28 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Flow Valve Calibration Worksheet
LTV
®
1200/1150 SERIAL NUMBER:
____________
CONDUCTED BY:
____________
MEMORY BOARD SOFTWARE VER.:
____________
DATE:
____________
TEST
DESCRIPTION
MEAS.
VALUE
REQUIREMENT
ACCEPTABLE
A/D COUNTS
PASS
/ FAIL
FLOW VALVE CALIBRATION
Calibration Date:
Flow Valve Calibration
1) Determine flow valve configuration
Enter VHOME value (220
±20)
N/A
2) Measure 10 Lpm flow
Enter measured value
Pass = 10 Lpm
± 0.5 Lpm
N/A
3) Perform visual inspection
Enter inspection result N/A
4) Leak test in VENT CHECK Enter displayed value (Pass < 1.0 Lpm) N/A
5) Calibrate valve differential transducer
VD @ Ambient Enter displayed value 40 - 328
VD @ 15 cmH
2
O Enter displayed value
For Software Version < 5.04 1915 - 2340
For Software Version ≥ 5.04 1915 - 2521
6) Calibrate stepper motor
Phase A / +600 ma Enter displayed value N/A
Phase A / -600 ma Enter displayed value N/A
Phase B / +600 ma Enter displayed value N/A
Phase B / -600 ma Enter displayed value N/A
7) Measure 10 Lpm flow
Enter measured value
Pass = 10 Lpm
± 0.5 Lpm
N/A
8 e) Determine desired flow
at FVd = 15 cmH
2
O
Enter value from table N/A
8 k) Flow valve calibration results
VHOME position Enter final VHOME position N/A
TS (Turbine speed) Enter turbine speed for FVd = 15 cmH
2
O N/A
Measure final 10 Lpm flow Enter measured value N/A