Operating instructions

11
PROFESSIONAL SERVICE:
If the SELF HELP checks do not cover the symptom, you should seek professional help.
The following additional checklist is provided for the benefit of the qualified service person.
WARNING: SWITCH OFF THE ELECTRICITY AT THE ISOLATING SWITCH
BEFORE REMOVING THE COVER TO MAKE CHECKS
a) Unit fails to heat the water
Check that the water supply is on and that its pressure is between
0.069 MPa (0.7 bar / 10 psi) and 1.0 MPa (10.0 bar / 140 psi).
Check circuit through solenoid coil.
Check circuit through the heating element.
Check circuit through float switch
If defective then replace.
b) All the light are out and
the POWER button does
not work
Ensure that the electricity supply is switched on at the local isolator.
Ensure that the flying lead to the front cover is connected properly
(see Fig.5a and 5b).
Check the supply to the PCB. If supply OK then change PCB.
c) Water flows continually
from the steam vent pipe
Check that the float switch operates correctly and switches the
water solenoid on and off.
d) The water tank takes
more than 20 minutes to
fill with water
Check that the water supply is on and that its pressure is between
0.069 MPa (0.7 bar / 10 psi) and 1.0 MPa (10.0 bar / 140 psi).
Check operation of the water solenoid and that water flows into the
tank at a rate between 0.3 litres/minute and 1.0 litres/minute.
Check circuit through the solenoid coil
If defective then replace.
SB² Heat up times (table 3):
CONDITION
APPROXIMATE
HEAT UP TIME
2.5 Litre SB²
APPROXIMATE
HEAT UP TIME
4 Litre SB²
WHAT ELSE HAPPENS
SB² is switched
on at the local
isolator and the
unit is empty of
water.
POWER button is
pressed.
12 minutes
(4 minutes filling
8 minutes heating)
18 minutes
(5 minutes filling
13 minutes heating)
- POWER light comes on
- then FULL light comes on
- then TEMPERATURE READY
light comes on
- then steam comes out of vent
for 30 seconds
SB² is switched
on at the local
isolator and the
unit is already full
of cold water.
POWER button is
pressed.
8 minutes
13 minutes
- POWER and FULL lights both
come on
- then TEMPERATURE READY
light comes on
- then steam comes out of vent
for 30 seconds