General Faqs

There is a delay when my unit starts up – why is this? The unit is checking the power voltage and reacting accordingly. This process takes just a couple of seconds but a slight delay can be noted.

How often do I need to change the filter? Why do they become dirty? The machine filter needs to be replaced when it becomes significantly discolored or after 1,000 hours of machine running time or in accordance with your healthcare plan. It is important not to clean and reuse these filters as they will no longer function correctly.

The filter in the machine becomes discolored due to dirt particles in the air.

Can I use supplemental oxygen with my Fisher & Paykel Healthcare CPAP device? Yes, oxygen can be administered at the mask. Turn the device on before turning on the oxygen. Ensure that the oxygen source is turned off before switching off the device to avoid oxygen accumulating in the machine.

What is the expected life of the tube and the chamber? The HC325 and HC345 water chambers are made for single-patient use. Over time the chambers will slowly deteriorate (this will be accelerated with the use of normal tap water), at which time they will need to be replaced. In some markets, extended life chambers are available. These chambers pull apart (i.e. you can pull the plastic away from the stainless steel base), allowing for more thorough cleaning (dishwasher safe); so the chamber can be used for a much longer period of time.

Contact your equipment provider for more information.

The breathing tubes should be replaced regularly as specified in your healthcare plan. However, if you notice any breaks or tears, the tube should be replaced immediately. It is important that the tubes are attached and detached from the water chamber and mask with care. Hold the rubber cuff of the tube when removing it from the chamber and/or mask.

How much will it cost me to run my CPAP device? Fisher & Paykel Healthcare’s CPAP units are very energy efficient. Their power consumption is approximately 140W which means it costs less than leaving 2 x 100W lights on overnight.

What is Ramp and how does it work? Ramp allows the pressure of the machine to be lowered for comfort while awake. Over a 20-minute period the pressure will slowly increase to the therapeutic pressure the machine has been set at in order to splint your airway open. The amount the pressure is lowered by is proportional to the pressure at which your machine is set.

If your pressure setting is 12 cmH2O or less, the pressure will drop to 4 cmH2O. If your pressure is higher than 12 cmH2O, the pressure will be lowered to one third of the set pressure. It is useful to use this function if you find it difficult to get to sleep with the full pressure of your machine. Having the pressure reduced may allow you to get to sleep more easily.

If I get a cold or the flu, should I stop using my machine? No, you should continue to use your machine. Obviously in some cases this may not be possible. For example, if you have a severely blocked nose and are using a nasal mask you may not be able to breathe in through your nose. If this is the case, you may wish to stop using your CPAP unit until you are able to breathe through your nose again. If you are suffering from a chest infection or a blocked/sore ear, consult your doctor before recommencing treatment.

What happens to my device during power failure? During a power failure your device will stop running and you will no longer be receiving therapy. If you are using a CPAP mask which meets the specific mask standard (ISO 17510-2), which all Fisher & Paykel Healthcare masks meet, then your CO2 will be flushed from the mask through the exhaust flow ports. If you wake up and your machine has stopped and is unable to be restarted you should remove your mask and reinitiate therapy once the machine has power.

Who do I call for help? If at any stage during your CPAP therapy you require any help or assistance, contact your homecare provider.

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