ASP sterrad NX, Service & Troubleshooting Manual

Page: 116 / 126

7
System Calibration and Verification
Service Action Performed System Verification Test Requirements
Replace AC enclosure components Leak back test, plasma power measurement, door and
chamber temperature, door /chamber heater voltage,
injector valve heater voltage.
Replace controller or components Reprogram customer details, cycle information, pm and
login. Complete power supplies test and verification,
temperature calibration, neutral density and standard
and advanced cycle.
Replace thermistor Complete temperature verification and complete
standard cycle.
Replace delivery system components Leak back test, cassette guide test and complete cycle.
Replace door lock or sensor Door operation and complete cycle.
Replace printer Complete printer test and perform complete cycle.
Zeroing Pressure Transducers
4
Note : Prior to conducting this procedure, ensure that
the sterilizer has been powered on, and the
chamber and vaporizer assembly temperature are
regulating at their respective setpoints. (50º C on
the chamber and 70º C on the vaporizer.) Also, the
system leak rate must be
≤ 25 mtorr per minute.
Be sure you record the sterilizer serial number, all
pressure transducers’ serial numbers, and the
calibration instrumentation information on the
calibration data sheet that is included with the
calibration package.
1. Remove the pressure switch from the pressure control manifold.
2. Connect the KF16-7/16 thread adaptor to the pressure switch port.
3. Connect a calibrated vacuum gauge to the KF16 adaptor using the
KF16 centering ring and clamp.
4. Navigate to the Additional Utilities/Service Functions/Calibration
Tests/Pressure Calibration display. Press start to pump the system
down.
5. Allow the chamber pressure to stabilize. This should be below
50 mTorr (microns) as indicated on the vacuum gauge.
116 STERRAD
®
NX
™
Service Guide