Rothenberger Rofrost Turbo, Instructions For Use Manual

Page: 17 / 162

13
Commissioning, application and replacement of the tools
Commissioning:
The equipment (ROFROST TURBO freezing system) must be tempered, i.e. have adopted room
tempe 10° C up to a max. of 32° C) before commissioning.
Î 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.
Î
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.
Î Switch on by operating the rocker switch.
Please note
Always leave the lid open during the freezing process and make sure 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 guaranteed 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 freezing times; ideally, the pipe to be
frozen should be metallic bright.
Î Only apply the refrigerating tongs to the straight pipe sections. Badly distorted or out-of-centre
pipes are not suitable for freezing.
Application and replacement of the tools:
The refrigerating tongs are designed for pipes with an exterior diameter of:
ROFROST TURBO: 1.1/4“ or 42 mm respectively
ROFROST TURBO II: 2.1/8“ or 60 mm respectively.
Special reducing inserts are required in order to also be able to freeze pipes of a smaller diameter (see
illustrations A or B ).
Î
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.
Î
Handle the reducing inserts and refrigerating tongs with care. Clean them with a dry cloth after use
and store them in the lining provided to protect them against damage.
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 supervision and within the
prescribed ambient temperature range b 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.
Î
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.
ENGLISH