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MAINTENANCE
3
Calibration Check (250 mmHg, 400 mmHg, and 600 mmHg):
•
Repeat the previous step for 250 mmHg, 400 mmHg, and 600 mmHg
NOTE:
If any stabilized pressure reading is off by more than 5 mmHg during the calibration check, the unit
must be calibrated. Refer to Calibration under Section 3 Maintenance for instructions on calibration
4
Calibration Check (0 mmHg):
•
Touch the DEFLATE button to deflate the unit. Disconnect the hose from the PTS ii. The pressure
reading should decrease to 0 mmHg
NOTE:
If any stabilized pressure reading is off by more than 5 mmHg during the calibration check or the
pressure display does not return to zero, the unit must be calibrated. Refer to Calibration under Section 3
Maintenance for instructions on calibration
LEAK TESTING
Leak testing should be performed at least once every twelve months, or if leak alarms occur without an obvious cuff or
hose leak. The PTS ii is capable of maintaining cuff pressure even with a substantial leak in the system; however, any leak
may become worse and lead to loss of pressure during a procedure, so it is important to find and correct leaks as soon as
possible.
To conduct a leak test, follow instructions in Leak Test under Section 2 Operating Instructions.
NOTE:
If "SMALL LEAK" or "LARGE LEAK" are displayed there is a significant leak in either the test cuff or hose or in the PTS
ii internal pneumatics. Repeat the test with a variety of different cuffs and hose assemblies. If this condition persists, the
leak is internal, and the PTS ii will require servicing
BATTERY TESTING AND REPLACEMENT
CAUTION:
Risk of electric shock. Set the PTS ii to STANDBY and disconnect AC power before opening the battery
compartment
A new battery pack is designed to run the PTS ii without AC power for up to 10 hours of typical use on a full charge; however,
this charge life will vary greatly depending on the conditions of use. The life and performance of the battery pack also
depend on the conditions of use and storage. For best battery performance when operating the unit primarily on battery,
allow the battery to discharge to a low level before recharging. Battery replacement will need to be more frequent with
continued cycles of deep discharge and/or storage at high temperatures. Infrequent short-term use of the battery and
storage at room temperature or lower will result in maximum life.
The PTS ii features automatic battery charging and monitoring functions and attempts to charge the battery whenever the
unit is connected to AC power, both in ON and STANDBY modes. No maintenance is required of the battery charging circuit.
To check the charge level in the battery, the PTS ii must be ON with no AC power connected. When ON under battery
power, the BATTERY STATUS indicator appears. When the colored bar completely fills the BATTERY STATUS indicator, the
battery has a full charge. Reducing length of the bar and the change in color from green to orange to yellow to red
progressively indicate decreasing battery capacity and the need for recharging.
50
MAINTENANCE
3
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