Rothenberger ROFROST Turbo II R290 1.1/4 Instrucciones De Uso página 22

– Different contacting of the refrigerating clamps on the pipe,
– Adverse effect of draughts.
 Do not switch the unit on until both refrigerating clamps have been secured firmly to the
pipes to be frozen (see ill. C-3). The heating or pump must be switched off in good time in
order to stop the water flow in the pipe.
Danger: Danger of frostbite! The metal parts of the refrig-
erating clamps have a temperature of approx. –30°C dur-
ing the freezing process. Only touch the refrigerating
clamps wearing gloves suitable for the cold!
 Open the circuit when the temperature is at < -5° C and the time has been reached accord-
ing to the table (see ill. A or B).
The stated values are guideline values determined at a room temperature of 22° C.
4.4 Shutdown
 Shut down the freezer system, allow the refrigerating clamps and hoses to defrost, remove
them from the pipe and clean.
 Hold the refrigerating tongs upright for about 5 minutes and switch the system back on so
that any oil that may still possibly be in the refrigerating tongs can find its way back into the
circuit.
 Shut down the system, remove the power plug and carefully store the hose assembly group
in the housing compartment.
Caution: Do not bend or stretch the hoses!
5 Care and Maintenance
 Handle the equipment with care and consideration
 Avoid hard impact, vibrations and mechanical damage
 Only operate, transport and store the equipment in an upright installation position.
If, contrary to expectations, and in spite of careful handling a technical fault should occur, please
contact your dealer or the manufacturer dir.
The cooling circuit must only be opened by technical experts from ROTHENBERGER
Werkzeuge GmbH.
Once the ROTHENBERGER heat-conductive paste has been used up it can be re-ordered by
quoting order no. 62291.
6 Troubleshooting
Basic details can be found in the chapter on safety information.
In addition please also check:
– that adequate heat-conductive paste is applied for the contact between the refrigerating
tongs and the pipe or the reducing insert and the pipe,
– that the refrigerating clamps are attached to the pipes properly,
– that the water circuit is idle.
Among other things, additional influences can have an effect on the length of freezing time:
– wall thickness of the pipes,
– pipe material,
– contaminated water, ie systems containing inhibitors or anti rust treatment,
– outgoing temperature of the water to be frozen,
– ambient temperature (e.g. solar irradiation),
– operating temperature of the equipment,
– bent or stretched refrigerating hoses.
18 ENGLISH