Blease Test Procedure
Title: B.A.V. POWER SUPPLY PCB DocumentNo:129TP076 Sheet 1 of 5
Issue 1
Change Note No n/a
Originator JLB
Checked
Date
BLEASE QUALITY DOCUMENT
BQD 083.V2
25/5/94
1.0 OBJECTIVE
To set up and test power supply board 10100076 used with the Blease 8500 Anaesthetic
Ventilator and record a set of test results using 129TC000 Checklist and Calibration Record
2.0 SCOPE
The test procedure should be used with newly manufactured boards. When successfully passed
they can be placed into Blease stock after inspection.
3.0 OVERVIEW
All testing is done with the aid of a test jig (TJ 70), this provides power resistors and switching
that allows the correct test loading to be applied. Five 3½ digit LCD panel meters are also
incorporated into the jig which are connected to the input and output power rails of the PSU
board via its connectors.
The jig also contains a mains transformer and rechargable battery with circuits identical to that
used in an 8500 Anaesthetic Ventilator. Hence any results noted will accurately reflect the
board operation when it is eventually fitted into a ventilator.
Most of the testing uses an external DC variable supply, this avoids the need for a 'Variac' and
also allows current limiting to be used.
WARNING - WHEN POWERING UP A BOARD FOR THE FIRST TIME ALWAYS USE
THE CURRENT LIMIT. THIS WILL REDUCE THE RISK OF ANY PERSONAL INJURY
OR DAMAGE TO THE BOARD IN THE EVENT OF A FAULT OCCURRING.
Test results must be noted on the checklist and calibration form 101TC00076. When testing is
successfully completed, the form must be 'signed off' and the necessary 'pass' notification
attached to the tested board.
The following procedure describes the adjustments and checks necessary to calibrate the board
and set all the pre-set controls (if any) to achieve the specified performance. Inability to make
these adjustments, or failure to meet the specification after these adjustments have been made,
should be considered as a fault.
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