Hallowell EMC 2002PRO - Page 20

2/26/2018 DOCA3667B Pro Series Operating Manual.doc 20 of 22
TROUBLESHOOTING (Continued)
Symptom
Potential Causes
Possible Remedies
Ventilator sounds as though it is
• No supply gas pressure.
• Unkink the supply gas hose.
cycling. I can hear the valves
• VOLUME control is set at it's
• Replace empty tank.
clicking but nothing happens.
minimum.
• Increase the VOLUME setting.
Ventilator hums with each inspiration.
• Supply gas pressure at the
• Unkink supply gas hose.
• ventilator inlet is dropping to
• Anesthesia machine power outlet
• around 25 - 30 psi with O
2
flow.
is incapable of supplying the
• Pipeline or tank pressure is low.
required flow. Bypass it.
Switch to new supply gas source.
Nothing happens when the
• No electrical power.
• Plug ventilator into the proper
ventilator is turned on. No valves
power source.
are clicking, green LED not lit.
• Check voltage setting.
• Check the outlet.
• Check the fuse
Pop-off valve in the Bellows Base
• Excessive fresh gas flow from the
• Reduce the fresh gas flow.
chatters and the bellows shakes
anesthesia machine.
after it reaches the top during
exhalation.
Inspiratory flow chugs intermittently.
• Pressure within the bellows
housing is exceeding 70 cm H
2
O.
• Working pressure limit is
shutting off the switch Inspiratory
flow.
• Inflate collapsed bellows.
• Unkink the drive gas tube.
• Unkink breathing system hose.
The ventilator operation sounds
normal but the TV delivered is incorrect
and or inconsistent.
• Missing or damaged pop-off
valve o-ring.
• Replace o-ring
Irregular cycling when using cautery or
• Excessive generation of EMI
• Locate and repair source of
other electro-surgical device.
and/or RFI.
disturbance.
Bellows dislodges from mounting ring.
• Partially detached or improperly
• Reattach or replace the bellows.
• Repair defective or poorly
regulated scavenger system.
mounted bellows.
• Either pressure or vacuum is
occurring at the Bellows Base
EXHAUST port.
Bellows is bulging.
• P.O.V. is stuck closed.
(To determine if this is the
problem, temporarily disconnect
scavenger to isolate problem.)
• Clean P.O.V. and seat.*
Everything seems normal, but the
• Breathing system gas is leaking
from the system. (SEE THE
FIRST PARAGRAPH OF THIS
SECTION )
• Inadequate fresh gas supply from
anesthesia machine.
• Missing or damaged pop-off
valve o-ring
• Hole in Bellows
• Partially detached or improperly
• installed bellows.
• Damaged pop-off valve or valve
seat.
• Anesthesia machines pop-off
valve is not completely closed.
• Remove obstruction.
• Increase flow.
• Replace o-ring
• Replace Bellows
• Reattach Bellows to the mounting
ring.
• Replace damaged part.
• Check all tubes and tubing
connections for leaks.
• Clean P.O.V. and seat.*
• Close, repair or replace valve.
bellows progressively becomes less full.
*See “Cleaning the P.O.V.” page 16.