DHG Dyna-Form Mercury Advance Service Manual page 5

SERVICE MANUAL
Power Switch Audible Alert Reset
The power switch simply switches the mains power to the Control Unit on and off.
When the Control Unit detects an Audible Alert condition, this can be silenced (see page 5) and re-set
by switching the Control Unit off and then back on again.
CPR Valve
Please ensure that the CPR connector is always placed fully home, prior to inflating the mattress.
NB: The mattress will NOT inflate properly should this not be the case.
The CPR connector is only to be used in the event of a clinical emergency for priority use. However,
disconnecting this function will cleverly deflate air rapidly from the mattress in readiness for transport /
static mode.
LED Mode Settings
This symbol when illuminated (The green indicator light) is used to indicate that the equipment is on or
ready for use.
When a patient requires a true dynamic function or indeed more pressure in the cells, as they may be
uncomfortable or feel as though the support surface is too soft or unstable, then please select a "High"
setting (pressure 26mmHg). This must only be used by a trained clinician as often too high pressures
can further agitate certain patient conditions.
When a patient requires less pressure in the cells, as they may be uncomfortable or indeed hyper
sensitive to cell movement or indeed if the patient is still reddening further, then please select a "Low"
setting (pressure 18mmHg). This must only be used by a trained clinician
This function is used to silence the Audible Alert. The LED will remain lit if the Audible Alert has been
silenced previously, however a fault is still detected. Refer to the power switch in order to re-set fully. If
the Audible Alert continues to sound repeatedly, along with an illuminated light, then an engineer must
be called.
This symbol indicates an "Audible Alert Failure".
Please see troubleshooting guide below for how to re-set.
This symbol, when illuminated, indicates a Service is required.
DHG recommends an annual service. The service light will illuminate every 8760 hours of operation
(one continuous year running).
Note: Please ensure (when available) that all securing straps on the base of the mattress are secured
onto the MOVING PARTS of the bed frame.
For shut down procedure, see 4.2 Control Unit section.
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