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Version April 2019
EN
9
HST – S – 315 2.0 User’s Manual
O . M . I . S . A . S r l
Via Verga 9/11
20845 Sovico (MB), Italy
this, with the connection type A02 the system recognizes the proper
end of welding on its own, and despite
000
displayed on the screen,
a welding process may be flawed (see Sect. 6.11).
5.5 Aborted Welding
The welding process has caused errors if the red LED (Fault) is on and
the audible signal beeps intermittently. Additionally, an error code is
displayed on the screen.
An error has to be acknowledged by pressing the STOP key.
5.6 Cooling Time
The cooling time as given in the fitting manufacturer’s instructions has
to be respected. Note that for that time the pipe/fitting joint which is
still warm must not be subjected to an external force.
5.7 Returning to the Start of Welding
After welding is finished, disconnecting the welded fitting from the
welding unit will cause the unit to return to the start of welding. An
additional safety feature prevents a given electrofusion fitting from
being welded twice inadvertently: after a properly completed or an
aborted welding operation, the welding unit has to be disconnected
from the fitting first, in order to be ready for the next welding.
5.8 Using the Optional Multi-adapter
The so-called multi-adapter, which is an optional extra, is a jumper
cable which,
for electrofusion fittings of connector type A00
and with a nominal size < O.D. 110 mm
, allows the simultane-
ous processing of two fittings. Both electrofusion fittings have
to be of the same kind and have to require identical welding
parameters. Then, the adapter cable daisy-chains, as it were,
the fittings. The yellow connection terminal is meant to
go to that one of the two fittings where the yellow con-
nector of the welding cable/adapter is, accordingly the
black connection terminal of the multi-adapter, to the
same fitting as the black connector of the welding cable/
adapter.
6
Self-Monitoring Functions Overview
6.1 System Error
Caution
The welding unit must be disconnected immediately from
the power supply and the fitting. The auto-test has found
an error in the system. The unit must no longer be operated
and has to be turned in for check and repair.
6.2 Power Supply Failure
The last welding is incomplete. The welding unit was disconnected
from the power supply. This error has to be acknowledged by press-
ing the STOP key.
