Tecnoma VECTIS 1000, Настройки, использование и обслуживание

Страница: 93 / 133

MAy-2015
93
– USING THE MACHINE –
5.10.7 - SOLENOID VALVES
9746160_entretien_GB.indd
27-05-2015
Capital 1174400 € - B.P. 195 - 51206 EPERNAy - FRANCE Tél.
03.26.51.99.99 - Fax : 03.26.51.83.51 - http:www.tecnoma.com
EPERNAy B 350 484 309 - APE 293D
54
/54
SOLENOID VALVE
PRINCIPLE AND MAINTENANCE
9746160A
S 191
HOW THE VALVES OPERATE
• WHEN OPEN (fi g.1) :
◊ needle A is lifted from its seating by
electro-magnet B.
• WHEN CLOSED (fi g.2) :
◊ needle A is maintained in position
on its seating by means of spring C.
DISASSEMBLY- REASSEMBLY
• DISASSEMBLY coil-core (fi g.3) :
◊ Remove the black cap A, unscrew screw B
◊ Remove lid D.
◊ To gain access to the core ; unscrew 2nd nut B from the
threaded rod, remove the two bolts E and remove the coil.
• REASSEMBLy :
◊ Proceed in reverse order.
• SEATING of ELECTRO-MAGNET:
◊ The needle guide screw A (fi g.4) should not be
tight, else reduce the outer diameter of guide screw at B
with Emery paper.
• WATERTIGHTNESS of NEEDLE on its SEATING :
◊ Check condition of both conical head of needle and
of seating ( fi g.4: point C)
◊ Check that there is play between base of needle
and the top guide screw at D (fi g.4).
ROUTINE SERVICING OF ELECTRO-MAGNET :
Make sure that the coil slides easily on the core (the core should be able to freely turn 360°)
; if not, two causes are possible :
• The core is dirty (perhaps rusty) : clean (if rusty, use oily abrasive paper N°180) ; spray on a
fi lm of antioxidant product.
• The core is clean : the coiling is deformed : replace the coil. Use key N°95035 (fi g.6).
ELECTRICAL CONNECTIONS :
• Never bend the electro-magnet terminals (fi g. 5)
• Grease the connections.
TERMINAL CONNECTIONS :
Scrupulously follow the connection indications for the inlet and outlet of the liquid as
shown with arrow F (fi g.3).
Wire
5
4
3
2
1
6
95035