504-2033 Iss. 1j 10 April 2005
7. Check the condition of the paraPAC (continued)
v) e) The Variable Relief knob should align with the calibration marks at each end of
the scale.
vi) If the index mark on any knob side or end cap is misaligned it must be corrected before
further calibration checks are carried out.
vii) To relocate the Frequency and Tidal Volume knobs, remove the end cap from the knob.
viii) Using an appropriate knob collet spanner (e.g. 500-82073), release the knob from the
spindle.
a) For the Frequency knob, rotate the spindle until it engages the click-stop
position and set the indicator line on the knob at 12 bpm. Ensure that the knob
has a clearance of 0.5mm from the front panel and retighten. Check that the
knob aligns at the 8 bpm and 40 bpm positions respectively.
b) For the Tidal Volume knob rotate the spindle fully anticlockwise till it reaches
the stop and set the indicator line on the knob align with the end of the coloured
band. Ensure that the knob has a clearance of 0.5mm from the front panel and
retighten. Rotate the knob and check that it aligns with the opposite end of the
band.
ix) Refit the knob cap ensuring the line on the cap aligns with the line on the knob.
x) The On/Off (Demand/CMV-Demand), the Air Mix/No Air Mix switch and the
Variable relief switch knobs have a fixed position but the end cap can be relocated on
the front of the knob to give correct indication.
xi) If any of the caps on the above knobs have been removed for relocation or can be
rotated, relative to the knob, during normal operation they should be secured to the
knob with a very small drop of adhesive (DS354 C10/Loctite Prism 460).
xii) Check that the gauge surround is secure, the front panel label is secure and not
damaged (i.e. punctured) and the silence button is undamaged.
xiii) Check that the gauge is in the correct vertical position and has not rotated in the shroud.
xiv) Ensure that the battery cap is fitted in the correct orientation to suit the type of battery
installed (standard or MRI).
xv) Remove the existing battery and check when battery was last changed. If more than 12
months, insert a new battery of the correct type (ensure that if the ventilator is being
used, or likely to be used, in an MR environment battery part no W269-023 is used). If
service interval is less than 12 months, mark the battery, or service log for the
ventilator, with the date of replacement.
xvi) Replace any damaged labels.
xvii) Check that any accessories or spares added are MR Compatible including.
8. Check the Condition of the Patient Hose
i) Check the patient hose for damage, splits or small holes in the corrugated tube.
ii) If any defects are found replace the hose tube immediately.
iii) For EP Option circuits check that a complete circuit is available and has no defects.
iv) Check that the adaptor at the Patient Valve end of the circuit is undamaged, fits closely
onto the Patient Valve and the sensing line connecting spigot is not damaged.
v) Replace the filter (W7085) in the EP Option sensing line.
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