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–
Different contacting of the refrigerating tongs on the pipe,
–
Adverse effect of draughts.
Do not switch the unit on until both refrigerating tongs 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 re-
frigerating tongs have a temperature of approx. –30° C
during the freezing process. Only touch the refrigerating
tongs 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 tongs 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!
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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.
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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 tongs 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,
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pipe material,
–
contaminated water,
–
outgoing temperature of the water to be frozen,
–
ambient temperature (e.g. solar irradiation),
–
operating temperature of the equipment,
–
bent or stretched refrigerating hoses.
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