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8 Maintenance
Installation and Operating Instructions
High Pressure Cleaner, Hot Water, Stationary
HSC1140-INOX Gas
8.3.1
Antifreeze
General Information
For locations of stationary hot water high pressure cleaners with
environmental conditions below freezing point, EHRLE offers detailed
advice.
Special versions of systems allow operation in locations with ambient
conditions at temperatures as low as -20 °C .
If the system is exposed to temperatures below freezing point during
prolonged shutdown or decommissioning (e.g. temporary storage location
in warehouse), frost protection must be provided (see both following
subsections).
8.3.1.1 Drain water from high pressure cleaner
Proceed as follows:
Unscrew the water supply hose and the high pressure hose.
Run the high pressure cleaner for max. 1 minute until the pump and
pipes are empty.
Open the drain tap on the boiler.
8.3.1.2 Rinse high pressure cleaner with antifreeze agent
General Information
Observe the handling instructions of the antifreeze manufacturer.
Proceed as follows:
Fill the float container with commercially available antifreeze up to the
top.
Place the collecting container under the high pressure outlet.
Switch on the high pressure cleaner and operate until the low-water
cut-off in the float container responds and the system switches off.
Fill boiler bottom and siphon with antifreeze agent
Also provides corrosion protection.
