Burkert Type 5282 - Manual (Page 4)

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Flow direction
Function NC Function NO
Function NC
The pilot valve is ins-
talled in such a way that
the manual emergency
actuation points in the
direction opposite to
the direction of flow
arrow.
Function NO
The pilot valve is ins-
talled in such a way
that the manual emer-
gency actuation points
in the same direction as
the identification for the
flow direction.
Fig. 4: Valve functions (NC/NO)
5.6 Setting the switching times
The closing and opening times of the valve can be changed if required with
the side throttle screws.
NOTE!
Pressure surges caused by liquid media and short closing times!
• If closing times are fairly short, liquid media cause higher pressure
surges. These may reduce the service life of the diaphragm and
destroy other devices and components in the system.
CAUTION!
Discharge of medium if the throttle screws are unscrewed too far!
Extending
closing times
Extending
opening times
Reducing
closing times
Reducing
opening times
Fig. 5: Extending / reducing switching times
Extending / reducing
switching times
Fig. 6: Extending / reducing switching times for DN13 stainless steel
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5.7 Electrical connection of the cable plug
DANGER!
Risk of injury due to electrical shock!
▶ Before reaching into the device / equipment switch off the power
supply and secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations for
electrical equipment!
If the protective conductor is not connected, there is a risk of electric
shock!
▶ Always connect protective conductor and check electrical continuity
coil and body.
Authorized cable plug e.g.
Type 2508 or other suitable cable
plug in accordance with
DIN EN 175301-803 Form A
max. 1 Nm
Seal
Fig. 7: Electrical connection of the cable plug
Note the voltage and current type as specified on the type label.
→
Tighten cable plug (for permitted types see data sheet), observing
max. torque 1 Nm.
→
Check that seal is fitted correctly.
→
Connect protective conductor and check electrical continuity between
coil and body.
5.7.1 Electrical connection - Pulse (CF 02)
2 4 3
1
Terminal 1
( =) ∼
(+) L1
(–) N
PE
Terminal 2
Terminal 3
Earth connector
Fig. 8: Circuit diagram
The connection terminals in the device socket are identified with
the numbers 1 to 3 according to the terminals on the valve.
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Procedure:
→
Pulse valves (variable code CF 02) as in “Fig. 8: Circuit diagram”
connect. Pulse to Terminal 1 closes the valve; pulse to Terminal 2
opens the valve.
→
Connect standard version L1/+ or N/– to Terminals 1 and 2 irres-
pective of the polarity.
NOTE!
Important information:
• Avoid emitting pulses simultaneously to both coil windings.
• Do not switch any other consumers (relays, etc.) at the same time as
the terminals.
• The coil connection, to which voltage is not applied, must be galva-
nically isolated (open).
• If two or more valves are switched in parallel, ensure that this requi-
rement is met by using 2-pole or multi-pole switches.
6 MAINTENANCE,
TROUBLESHOOTING
6.1 Safety instructions
DANGER!
Risk of injury from high pressure in the equipment!
▶ Before loosening the pipes and valves, turn off the pressure and vent
the pipes.
Risk of injury due to electrical shock!
▶ Before reaching into the device or the equipment, switch off the
power supply and secure to prevent reactivation!
▶ Observe applicable accident prevention and safety regulations for
electrical equipment!
WARNING!
Risk of injury from improper maintenance!
▶ Maintenance may be carried out by authorized technicians only and
with the appropriate tools!
Risk of injury from unintentional activation of the system and an
uncontrolled restart!
▶ Secure system from unintentional activation.
▶ Following maintenance, ensure a controlled restart.
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Type 5282