User Manual
BW-50-070/10
Page 12 of 16
H
2
O
lamps is lit
The Heating Pad is not inserted
in the Water mattress or there
is no water in the mattress,
Correct the position of the
Heating Pad and/or add water
in the Water Mattress.
The Heating Pad is not
connected,
Check pad connection
lamp is lit
Heating Pad is faulty
Try another Heating Pad
Technical fault in Control Unit
Leave the unit to a technician
lamp is lit
Element in the Heating Pad
might be faulty
Check with another Heating Pad
or leave it to a technician
, H
2
O and
are blinking
Internal 1,5 V battery low or
missing and must be replaced
as soon as possible
Battery has to be replaced by a
technician
Bypass by making a new start
but keep the Alarm button
pressed continuously until the
self test has ended.
10 Safety systems available
Test instructions
Self test at start
Connect the control unit to mains supply and Heating Pad. Switch on the mains switch at the rear panel
and check that the mains indicator lamp is lit.
Press Start/Standby and check that the following happens in the order described below.
1.
All alarm lamps are lit and the beeper sounds for about 0.5 sec.
2.
All lamps starting from Control unit lamp and ending with 42
o
C are lit in consecutive order.
3.
One of the temperature lamps blinks 5 times indicating PROM version
4.
Temperature lamp 37 is lit.
5.
If the self test is performed as described above it is ready for use.
Over temperature alarm
1.
Start the unit and observe self test is OK
2.
Fill a bucket (Height about 30 cm and min. diameter 20 cm) with warm water (38
o
C)
3.
Roll the Heating Pad loosely and insert it fully in the water.
4.
Slowly fill with warm water until the temperature reaches 39.5
o
C.
NOTE: It will take a few minutes for the sensor in the Heating Pad to reach 39.5
o
C.
5.
Check that the over-temperature lamp is lit and that the beeper sounds at 39.5
o
C
±
1
o
C.
NOTE: During this test other alarm lamps may be lit and the beeper may sound but this does not
influence the test
.
Temperature deviation alarm
∆
T
This alarm can only be activated after the selected temperature has been reached.
There are 2 ways of performing this test.
Testing at normal use and when the set temperature has been reached.
1.
Note actual temperature
2.
Pull out the Heating Pad from the pocket of the mattress so that temperature sensor T1 is cooled.
3.
Check that the alarm lamp is lit when the temperature has dropped 1
o
C
Testing with a water container
1.
Fill a water container with 36
o
C water and insert the Heating Pad
2.
Start the warming and wait until the temperature lamps indicates that the set value has been
reached.
3.
Fill slowly with hot or cold water and note that the
∆
T
lamp is lit when the temperature has
changed more than 1
o
C
