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SafeVision Installation And Setting
Instructions |
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Important Safety Procedures
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BEFORE carrying out any form of
maintenance on an actuated valve:
- ALWAYS disconnect the Air and
Electrical supplies.
- Do not disassemble any actuator
when pressurised.
- When replacing any items, use only
HYTORK® supplied components.
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Fitting The SafeVision |
- Attach the proper mounting
platform or mounting bracket to the SafeVision using the bolt and
washer sets provided. When using Safemount mounting platforms,
place the platform centrally along the base of the Safevision
housing and secure the bolts for one of the bolt mounting
patterns. -
- The SM 80-20 platform will fit
Hytork® actuator models with a 20mm high Namur pinion & the VDI/VDE
30mm x 80mm bolt pattern.
- Operate the actuator to the fully
closed position.
- Attach the SafeVision and mounting
platform/bracket to the actuator, locating the tang drive of the
SafeVision drive shaft correctly in the slot on top of the
actuator drive pinion.
- Secure complete assembly using
bolt and washer set provided.
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Removing The Cover
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CAUTION! TO PREVENT
IGNITION OF HAZARDOUS ATMOSPHERES, KEEP UNIT TIGHTLY CLOSED WHEN IN
OPERATION. DISCONNECT ELECTRICAL SUPPLY CIRCUIT BEFORE REMOVING
COVER.
- Unscrew the eight cover to base
securing screws located around the SafeVision housing until all
the threads are disengaged from the base assembly.
- Lift the cover assembly, complete
with visual indicator display, upwards and away.
- The switches, terminal rail and
switch setting cams are now fully exposed.
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Important Wiring
Installation |
All electrical wiring must be completed in accordance with Local and
National Electrical Standards and Codes. If the installation is in a
hazardous area, all electrical leads must be sealed in accordance
with relevant Electrical Code. Cable glands and cabling methods used
in service must be certified and suitable for the type of protection
specified. The proper wiring diagram for each unit is located inside
the SafeVision housing. Please follow carefully. Ground (Earth)
wiring should be secure under the grounding screw. Check that all
wires are properly inserted into the terminal rail and ensure that
all screws are tight.
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Setting The
Switches |
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- Each switch has its own
independent cam arrangement.
- Lift the bottom cam against the
spring to disengage it from the drive spline and turn it until the
switch is activated. Once in the correct position, push the cam back
on to the spline.
- To set the other cam, operate the
unit to the opposite end of its travel and adjust in the same
manner.
- Operate the unit fully in both
directions several times to check that the switches are operating
correctly.
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Replacing The Cover |
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- Confirm the final position of the actuator /
valve.
- Ensure that the visual indicator display
coincides with the position of the valve and that the drive tang on
the indicator drive shaft is in the same orientation as the slot on
the switching drive shaft.
- Replace the cover assembly with the two
shafts engaged correctly and tighten the eight cover to base
securing screws.
- Operate the unit fully in both directions
several times to check that the visual indicator is operating
correctly.
- If repositioning of the visual indicator
display is required for orientation, unscrew the stop screw and
rotate the outer cap anti-clockwise by 15 degrees. Lift the cap to
remove it.
- reset the indicator by lifting and
repositioning on the drive shaft. Replace the outer cap and
re-tighten the screw.
- The SafeVision is now ready for operation.
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