Function Of The Unit; Commissioning; Application And Replacement Of The Tools; Operating - Rothenberger ROFROST TURBO Instrucciones De Uso

4

Function of the Unit

4.1

Commissioning

The equipment (ROFROST TURBO freezing system) must be tempered, i.e. have adopted room
temperature (+ 10° C up to a max. of 32° C) before commissioning.
 Shut down the heating circuit on which the piping is to be interrupted by means of an ice
plug. Shut down the heating and pump in good time in order to stop the water flow.
 Position the freezing system in such a way that the equipment ventilator motor does not
blow onto the pipes to be frozen, as they must be protected against warm air.
The fitted ventilator sucks in the air that is required for the liquefaction of the cooling agent and
cooling the compressor on the long side of the equipment and presses it out again on the top
side.
 Hold the refrigerating tongs upright and switch the system on for about 5 minutes so that any
oil that may still possibly be in the refrigerating tongs can find its way back into the circuit.
Switch on by operating the rocker switch.
Please note
During the freezing process make sure that all the air grilles are not blocked as proper air
circulation must be guaranteed!
The ROFROST TURBO is a "contact freezing unit". The function of the unit can only be guaran-
teed if there is proper heat-conducting contact between the refrigerating tongs and the pipes that
are to be frozen. Paint and contamination in the application range of the tongs will extend freez-
ing times; ideally, the pipe to be frozen should be metallic bright.
 Only apply the refrigerating tongs to the straight pipe sections. Badly distorted or out-of-
centre pipes are not suitable for freezing.
4.2

Application and replacement of the tools

The refrigerating tongs are designed for pipes with an exterior diameter of:
ROFROST TURBO:
ROFROST TURBO II:
Special reducing inserts are required in order to also be able to freeze pipes of a smaller diame-
ter (see illustrations A or B).
 Spread heat-conducting paste generously on the contact surfaces between the refrigerating
tongs, reducing inserts and pipes to avoid insulation bridges (see illustration C-1).
Please note: Heat-conducting paste must be used for optimal function!
Important information: The refrigerating tongs and pipes must be protected against
draughts during the freezing process!
 Handle the reducing inserts and refrigerating tongs with care. Clean them with a dry cloth af-
ter use and store them in the lining provided to protect them against damage.
4.3

Operating

The ROFROST TURBO is a compact ready-to-plug unit. It works with a hermitical compression
refrigerating system. Troublefree continuous operation for hours or days is possible under su-
pervision and within the prescribed ambient temperature range between + 10° C and 32° C and
voltage / frequency in accordance with the technical data.
The simple clamping system of the refrigerating tongs ensures safe fastening to the pipe.
 Press the gripper together with the appropriate insert onto the pipe to be frozen and tighten
by means of the fastening screw (see illustration C-2).
Please note: Only tighten the fastening screw by hand!
 Remove superfluous heat-conducting paste!
We recommend greasing the screw as this makes it easier to release the refrigerating tongs af-
ter the freezing process!
42 mm / 1¼" respectively
54 mm / 2" respectively.
ENGLISH 15