Welch Allyn Atlas Service Manual page 12

Section 2 - Service
2.2.4 Deflation Test:
With the unit connected to a large adult cuff
and a target inflation pressure of 200 mmHg*
have the unit perform a complete "normal"
BP cycle.
For steps two and three, the size of the step
must be between 3.0 mmHg and 11.0 mmHg.
Step 4 and all other steps above or equal to
40 mmHg, step size must be between 7.0
mmHg and 11.0 mmHg. All steps below 40
mmHg, except for the last step, will be
between 4.5 mmHg and 10 mmHg. The last
step will be between 0.01 mmHg and 10
mmHg.
2.2.5 Charge Voltage Test:
Check battery charging circuit:
Specification :No Load: 6.85VDC across
right pin (+) and left pin (-) of Main PCB
battery charge connector.
2.2.6 Hardware Fail Safe Tests
2.2.6.1 Over Pressure Test:
Atlas hardware must detect over
pressure on unit pneumatic system
between 296.0 mmHg and 329.0 mmHg.
2.2.6.2 Over 15 mmHg Test:
Atlas hardware must detect if the
pneumatic system has been pressurized
greater than 15 mmHg for more than 155
seconds but less than 180 seconds.
2.2.6.3 Under 15 mmHg Test:
Atlas hardware must detect if the
pneumatic system has been pressurized
less than 15 mmHg for more than 25.0
seconds but less than 35.0 seconds
before alowing new inflation cycle in "non-
Stat" Auto Mode.
2.2.7 RS232 Test:
The RS232 communication operation
will be confirmed with successful
serial transmit and receive.
2.2.8 Printer Option Test:
The printer must be able to print out the test
pattern . Inspect print quality.
SERVICE MANUAL 6200-43E REV. A
Deflation Test
* Go to service mode
screen and set initial
pressure to 200mmHg.
Charge Voltage Test
Hardware Fail Safe Tests
RS232 Test
Printer Option Test
WELCH ALLYN ATLAS MONITOR 3