Renfert 1845 0000, Manual

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6.6 Checking the overpressure valve
Calcification can cause the safety valve to fail. The correct function of the
safety valve must be checked once a year by an approved specialist com-
pany.
Access to the safety valve:
⇒
Release pressure and switch off.
⇒ Allow it to cool down�
⇒ Disconnect the power plug�
⇒
Remove 4 screws on the back (Fig� 18), pull the back downwards and remove
it�
Danger of burns! Hot steam!
When the unit is under pressure, hot steam escapes when the knob on the
safety valve is turned.
6.7 Taking the unit out of service for longer periods
If the steam cleaning unit is not used for an extended period of time, e�g�, during company vacation peri-
ods, the following measures should be taken:
⇒ Empty the tank and leave the unit with both the tank cap and the service opening open�
When restarting after a long pause, the unit should be rinsed (see Chap� 4�4)�
6.8 Replacing the solenoid valve
The installation instructions for exchanging the solenoid valve are included with the spare part�
Before replacement:
► Release pressure and switch off.
► Allow it to cool down.
► Disconnect the power plug.
6.9 Spare parts
You can find components subject to wear and the spare parts on the spare part
list in the internet at www.renfert.com/p918
Enter the following item number: 18450000 or 18460000�
The components excluded from the warranty (wear parts, consumables) are
marked in the spare parts list�
The serial number, date of manufacturing and equipment version are shown on
the nameplate of the equipment�
7 Troubleshooting
Errors Cause Corrective action
No response when
the ON / OFF button is
pressed
• The unit is not connected to the power
supply�
• Insert the power plug into a building electrical sock-
et�
POWER steamer 2:
No automatic filling.
Red indicator flashes 2 x.
• Unit not connected to the water supply,
or the water supply is not on�
• Connect the unit to the water supply and turn on the
water supply before switching on the unit�
• Water pressure too low� • Minimum required water pressure, see tech� data�
• Water supply turned on too late after
switching on�
• Turn on the water supply�
• Switch the unit off then on again.
• Sieve in the water connection
(16, Fig� 1) blocked�
• Unscrew the water hose, remove and clean the
sieve�
• The water supply provides distilled or
deionized water, the conductivity of
which is too low�
• Add a coffee spoon of salt, approx. 10 g, to the
pressure tank to increase the level of conductivity�
• Automatic filling is faulty. • Contact the repair service or send the unit in for
repair�
18
Fig.
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