Covidien Newport HT70, Operator'S Manual

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Troubleshooting Guide
Operator's Manual 5-9
Circuit check fails Leak in breathing circuit. Tighten all circuit and water trap connections.
Trim ends of the proximal and exhalation valve tubings
to enable a tighter fit.
Check the integrity of/replace the exhalation valve
diaphragm.
Connecting test lung instead of
occluding patient connection of
the circuit in step 1. Remove test lung and occlude the patient connection of
the circuit during step 1.
Incorrect assembly of circuit/
exhalation valve. See Attaching a Patient Circuit on page 3-6 for proper
assembly.
Incompatible circuit/exhalation
valve. Contact Covidien to verify if circuit is compatible.
Reference
Contact Information on page 1-9 .
Oxygen connected directly to the
circuit. Use the low flow oxygen reservoir or 50 psi air oxygen
mixer. Connect oxygen devices to the fresh gas intake
port after, not before, the circuit check is complete.
Ventilator needs service. Contact Covidien Technical Services for assistance.
Reference
Contact Information on page 1-9 .
Green external power indicator
on panel does not light when
ventilator is plugged into
external AC (wall) or DC (external
battery or auto lighter outlet)
power No external power is reaching the
ventilator. The ventilator is running
from the internal battery system. Check power cord connections. (L-shaped pinch fit
connector on rear of ventilator should angle toward the
midline of the ventilator, not away. See diagram on
sticker.)
Check that power outlet is active.
External battery is depleted. Plug into another external
battery, auto lighter, or AC power.
Check/replace the fuse in the external battery system or
auto DC cable.
Contact Covidien Technical Services for assistance.
Reference
Contact Information on page 1-9 .
Auto-triggering (at a typical
trigger setting)
(green trigger light illuminates
when there is no patient effort)
Circuit leak, airway leak, or both. Check for and resolve leaks if unintentional.
If airway leak is intentional, turn on NIV and adjust bias
flow/trigger settings so that the patient can trigger
effectively without auto-triggering.
Consider using the flow sensor and flow trigger.
In SIMV or SPONT modes, some
or all breaths seem to last extra
long Leak is causing flow to remain high
during Pressure Support breath
delivery, so the PS exp. threshold
(flow cycling off threshold) is never
met. Eliminate circuit leaks.
Set the PS max i-time control to limit the breath delivery
to a reasonable inspiratory time.
Table 5-2. Troubleshooting (Continued)
Problem/area of concern Probable cause Resolution