ITC Hemochron Signature+ Whole Blood Microcoagulation System - Manual (Page 48)

48
Error Message Cause Corrective Action
INR< 0.8
INR > 10.0
APTT < 20 Test result is outside clinical
range. Repeat test with new cuvette.
Out of Range-Lo
Test result is outside clinical
range.
Sample has clotted prematurely,
or did not mix correctly in
cuvette.
Bubbles may be present. Repeat test with new cuvette.
Out of Range-Hi Test result is outside clinical
range. Repeat test with new cuvette.
Check Time/Date Low Battery or RTC has lost its
Time/Date Tracking. Enter or Verify Time & Date.
Charge Battery.
Dark Photo Fault Hardware malfunction. Contact ITC Technical Service.
SERVICE AND MAINTENANCE
Routine Maintenance
Inspect and clean the cuvette opening as required. Remove residual dried blood or other foreign matter
using water moistened cotton swabs.
Remove any residual water with dry cotton swabs. If a disinfectant is needed, use a 0.5% solution of sodium
hypochlorite or a 10% dilution of household bleach in water. Wipe instrument with a water-dampened cloth
to remove residual bleach from the plastic surfaces.
Apply solution to clean and disinfect areas contaminated with blood. DO NOT use solvents or strong
cleaning solutions as they may damage the instrument’s plastic components. Routine maintenance other
than cleaning normally is not required.
Service
The HEMOCHRON Jr. Signature+ instrument is almost completely self-monitoring.
It monitors internal circuitry and reports problems to the display screen automatically. Malfunctions are
indicated by error messages detailed in the section “Troubleshooting.”
Battery Care
To optimize battery life, it is recommended that the HEMOCHRON Jr. Signature+ instrument be run on its
battery during the day. It can be plugged into a standard AC outlet overnight to allow the batteries to
recharge. The life of the nickel metal hydride battery is optimized when the battery is exercised in this
manner.
A fully charged battery will operate as defined in the Operation specifications section on page 10.
When the batteries are drained to the point that valid testing cannot be performed, the instrument will
display “CHARGE BATTERY” (see “Troubleshooting”). At this point, the instrument must be plugged in for
operation and recharging. Once plugged into an AC outlet, the instrument can be used immediately.
Instrument Disposal
If disposal is necessary, follow local regulations for disposal of electronic devices.