Troubleshooting - DHG Dyna-Form Mercury Advance Service Manual

4. Troubleshooting

Warning / Fault
Control Unit does
not operate; no
display lights
illuminate
Visual Indicator
+ Audible Alert
Visual Indicator
+ Audible Alert
Visual Indicator
+ Audible Alert
Visual Indicator
+ Audible Alert
Visual Indicator
+ Audible Alert
Visual Indicator
+ Audible Alert
6
DYNA-FORM MERCURY ADVANCE
Cause Solution
The Control 1. Check the Control Unit is connected to mains power outlet with the correct voltage.
Unit may not be 2. Check the Control Unit is switched on. Switch off and unplug the unit before
attached to a restarting.
power source or 3. Check the mains plug fuse (5 AMP) then check both Control Unit fuses (1 AMP) –
a fuse may need fuses can be released using a screwdriver to push and turn.
replacing. Do not try to open the Control Unit. Opening the unit could cause personal injury
or equipment damage.
Ensure the replacement of fuses is carried out accordance with local legislation.
Mains failure / 1. Check the Control Unit is connected to mains power outlet with the correct voltage.
Other 2. Check the Control Unit is switched on. Switch off and unplug the unit before
See above, plus: restarting.
3. Check the mains plug fuse (5 AMP) then check both Control Unit fuses (1 AMP) –
fuses can be released using a screwdriver to push and turn.
4. The warning could indicate pump or pressure sensor failure
Do not try to open the Control Unit. Opening the unit could cause personal injury
or equipment damage.
Ensure the replacement of fuses is carried out accordance with local legislation.
Pressure too low 1. Reset the warning – turn off power and press the Audible Warning mute button.
2. Check that the CPR connector is firmly attached to the Control Unit (located on
the left of the Control Unit case) Check all air hoses along the inside of the mattress
– each should be firmly connected. Check each air cell is securely attached to its
connecting air pipe.
3. Check all cells, pipes and hoses for any air leakage.
4. Check that the air filter cover is correctly secured and the air filter is clean.
5. Switch on power.
Pressure too low / 1. Check Blue external umbilical air pipe that is between mattress and CPR connector
Air pipe kinked is not kinked, twisted or damaged.
2. Check all air hoses along the inside of the mattress – each should be firmly
connected.
3. Check each air cell is securely attached to its connecting air pipe.
Pressure too high 1. Reset the warning – turn off power and press the Audible Warning button.
2. Disconnect the air hoses to reduce pressure, reconnect when pressure has
decreased.
3. Check for twists in the air hoses between Mattress and Control Unit.
Alternating Mode 1. Reset the warning – turn off Power and press the Audible Warning mute button.
failure 2. Disconnect the air hoses to reduce pressure – reconnect when pressure has
(no alternation) decreased.
Initialising failure 1. Press the Audible Warning mute button to silence the Audible Warning.
2. Check all air hoses along the inside of the mattress – each should be firmly
connected.
Check each air cell is securely attached to its connecting air pipe.
3. Check that the CPR connector is firmly attached to the Control Unit
(located on left of control unit casing).
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