MELAG MELAquick 12+ - Feed Water and Sensor Errors; Feed Water Container and Sensor Errors; Water Supply and Voltage Errors

12 System malfunctions
60
Event Possible causes What you can do
F14 When using the feed water container:
There is not enough feed water in the feed
water container.
1. Check whether sufficient feed water is in the feed
water container; the end of the intake hose is sub-
merged in water and that no air is being drawn in.
2. If necessary, top up the feed water.
The suction height from the feed water
container to the steam sterilizer is more than
1.5 m.
Please note that the container stands max. 1.5m deeper
than the steam sterilizer, otherwise no water is drawn in.
The suction filter in the feed water container
is blocked.
Check the filter in the feed water container for soiling and
clean it if necessary.
The feed water inlet hose is kinked or has
come loose.
Check the hose for kinks and that it is correctly connected
to the steam sterilizer and feed water container.
The float switch in the feed water container
is stuck.
Check that the float switch is working properly.
1. Unscrew and remove the lid of the feed water contain-
er.
2. Move the float switch up and down and try to make it
move smoothly again.
When using a MELAG water treatment unit:
The feed water supply is set to internal. Set the feed water supply to external in the Function
menu, see Setting the water treatment unit [}page30].
Residual air is in the feed system of the
water treatment unit after initial
commissioning or after replacing the mixed-
bed resin cartridge.
Acknowledge the malfunction message and start the
program repeatedly until the message is no longer
displayed.
The pressure tank of the MELAdem 47 is not
sufficiently filled.
Please note that after initial commissioning of a
MELAdem47 it takes approx. 1h until the pressure tank is
sufficiently full with water.
The water inflow tap is not open or the
pressure tank of the MELAdem 47 is closed.
1. Check whether the water inflow tap for the water treat-
ment unit is open.
2. Check whether the tap on the pressure tank is open.
When using a central water treatment unit:
The central water supply has been
interrupted or the flow pressure is
insufficient.
1. Check whether all inflow valves from the central sys-
tem to the steam sterilizer are open.
2. If necessary, arrange for an inspection of the flow
pressure of the central water treatment unit using a
flow pressure gauge (min. 0.5 bar at 0.8l/min).
F18 Malfunction on the specified sensor input Upon repeated incidence, contact an authorised customer
services / stockist technician.
With “Malfunction 18 Sensor: 6 Input: 6” an
excessively high conductivity of the feed
water supply can be measured.
Check whether the water used as feed water actually
corresponds to the required quality or e.g. tap water has
been used. The feed water must fulfil the quality
requirements of EN 13060, Appendix C. If tap water has
been used, restart the steam sterilizer two to three times so
as to flush out the tap water from the system.
F21 The door is open during the heating phase. Close the door during the heating phase (standby).
Insufficient mains voltage. The mains
voltage is too low, poor building voltage
supply (e.g. undersized installation, defective
socket, multiple devices on a single socket/
fuse) so that the steam generator cannot
heat up.
Check the building-side socket / test the steam sterilizer
using a different socket or circuit.
F23 The sieve tray in the sterilization chamber is
soiled.
Remove the sieve tray from the sterilization chamber,
clean and replace it, see Sieve tray of the sterilization
chamber [}page49].
The outlet hose is kinked or crushed. Check the outlet hose for kinks.