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f)
If the new set point is less than 400 mmHg, there is a significant leak in either in the test cuff and hose or
in the P.T.S. internal pneumatics. Repeat the test with a variety of different cuffs and hose assemblies.
If the unit continues to fail, the leak is internal and the P.T.S. unit must be serviced by Delfi.
3.5 BATTERY TESTING and REPLACEMENT
CAUTION: Risk of electric shock. Set the P.T.S. unit to standby and disconnect AC power before
opening the battery compartment.
NOTE: It is recommended that the battery in the P.T.S. be tested as described below every 3 months
and replaced annually. Even when the P.T.S. is used on AC power, the battery pack must be in good
condition to provide backup power in the event of the AC power being disconnected. If the battery
pack is removed or in poor condition, the P.T.S. will not operate (even with AC power connected) and
a "BATT ERROR" alarm will be triggered upon power-up.
A new battery pack is designed to run the P.T.S. without AC power for about 10 hours of typical use on a full
charge, however this charge life will vary greatly depending on the conditions of use.
performance of the battery pack also depends on the conditions of use and storage. 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 P.T.S. 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 P.T.S. must be on with no AC power
connected. When on under battery power, the battery indicator symbol appears in the message display (see
Fig. 2.1). When all six segments inside the battery symbol are darkened, the battery has a full charge.
Reducing numbers of darkened segments and low battery alarm conditions (see Table 2.1) progressively
indicate decreasing battery capacity and need for recharging.
3.5.1 BATTERY TESTING
To determine if the battery pack needs replacement, charge it for at least 8 hours and then test as follows:
a) Remove the AC power supply and power up the P.T.S. unit. The battery indicator symbol should be
visible in the message display and all 6 segments in the battery outline should be darkened.
b) Connect the P.T.S. to a tourniquet cuff and inflate to 350 mmHg.
c) If less than 5 segments in the battery indicator are darkened after 1 hour, replace the battery pack.
The battery pack must also be replaced if a "BATT ERROR" alarm condition occurs (see Table 2.1) that
cannot be corrected by plugging the P.T.S. unit into AC power or by confirming that the battery pack is
securely connected. You may also wish to replace the battery pack if you regularly use your P.T.S. on battery
power and have "BATT LOW" alarm conditions occurring soon after a full charge.
3.5.2 BATTERY PACK REPLACEMENT
WARNING: Use only Delfi REF 4-2100-017 NiMh battery packs. Do not use any other batteries. Use of
improper batteries may cause irregular operation that could be hazardous to the patient and/or user,
and may permanently damage the P.T.S. unit.
WARNING: When a new battery pack is installed, the P.T.S. must be plugged in to AC power for at
least 8 hours to fully charge the new battery before use.
a) Remove the single battery cover screw from the back of the P.T.S. unit (directly above the label) and
remove the battery cover.
b) Remove the old battery pack and unplug it by pulling the battery wires straight up from the battery
compartment. This will disconnect the battery connector from the two-pin plug inside the P.T.S. unit.
Recyle or dispose of the old battery pack in accordance with local regulations and procedures.
c) Install the new battery pack supplied by Delfi by pushing the connector onto the two-pin plug inside the
P.T.S. unit. Push the connector all the way down until it stops. The top of the connector will be about
flush with the battery compartment surface. The connector cannot be installed the wrong way; if it will not
slide easily all the way down, rotate it one-half turn and try again.
20
The life and
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