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OPERATING AND MAINTENANCE MANUAL
Chapter 8
- Safety pressure switch / Condensate drain
NRC0020-0200 UL
The data in this manual are not binding and may be changed by the manufacturer without notice.
Reproduction of this manual, even partial, is strictly prohibited.
8.2.1.4 Solenoid valve maintenance
The solenoid valve must always be protected by an appropriate filter to prevent solid particles preventing it from opening and closing properly.
However, if these particles manage to pass through the filter and cause the valve to malfunction, all its internal components must be cleaned.
Proceed as follows:
•
isolate and depressurise the dryer;
•
open the line switch to disconnect the power supply to the dryer;
8.2.2 Capacitive condensate drain
The capacitive condensate drain unit is supplied packed in a carton located on the unit base and it must be installed.
The condensate drain is already wired and electrically connected to the unit's electrical panel, and is therefore ready to operate.
Before starting the unit, install the capacitive condensate drain following the indications given in the diagrams at the end of this manual.
Before installing the condensate drain remove the protective cap from the insulated condensate drain pipe, which protrudes from the underside of
the dryer.
The pipe fittings of the condensate drain are supplied in a plastic bag secured to the condensate drain insulated pipe.
It is advisable to assemble the pipe fittings using a thread sealant and apply a thermal insulation material on the fittings once they are installed.
The indications concerning operation and maintenance of the capacitive condensate drain are given in the discharge unit instruction manual
which is in the condensate drain carton pack.
Mechanical condensate filter
Condensate drain strainer
1.
Plug
2.
Seal
3.
Metal mesh strainer
•
undo the screw in the center of the cap for the valve
power supply;
•
lift and remove the cap;
•
remove the solenoid valve from the pipe and clamp the
body tightly in a vice;
•
unscrew nut [1] securing solenoid valve [2] and
withdraw the latter from tie-rod [3];
•
unscrew the tie-rod from the valve seat;
check the condition of O-ring [4], and of all other
components and clean thoroughly;
•
re-assemble the components by performing the above
procedures in reverse sequence;
•
make sure that the valve is re-installed with the arrow
pointing in the right direction.
Condensate drain solenoid valve
1.
Fixing nut
2.
Solenoid
3.
Tie-rod
4.
O-ring
DANGER
Do not tighten nut [1] excessively as it could obstruct movement of the valve element and cause the valve to
open and close incorrectly.
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