8
7 VG9H 70 en
1.6
Recycling and disposal
Most ValvGuard parts can be recycled if sorted according to
material.
Most parts have material marking. A material list is supplied
with the ValvGuard. In addition, separate recycling and dis-
posal instructions are available from the manufacturer.
A ValvGuard may also be returned to the manufacturer for
recycling and disposal. There will be a charge for this.
1.7
Safety precautions
Ex i WARNING:
Installation conductors must be rated greater than
83 °C
CAUTION:
Opening the cover of VG9000H field device enclosure
is allowed for authorized and trained persons only!
Misuse of powered VG9000H field device may cause a
dangerous situation.
CAUTION:
Cover should be opened only in dry places, not when
the device is vulnerable to e.g. salt water.
CAUTION:
Do not exceed the permitted values!
Exceeding the permitted values marked on the ValvGuard
may cause damage to the controller and to equipment
attached to the controller and could lead to uncontrolled
pressure release in the worst case. Damage to the equip-
ment and personal injury may result.
CAUTION:
Do not remove or dismantle a pressurized controller!
Removing or dismantling a pressurized prestage or spool
valve of an ValvGuard leads to uncontrolled pressure
release. Always shut off the supply air and release the
pressure from the pipelines and equipment before remov-
ing or dismantling the controller. Otherwise personal
injury and damage to equipment may result.
WARNING:
Make sure the enclosure exhaust port will not be clog-
ged!
It may prevent the device to do the safety action.
CAUTION:
Make sure that during the maintenance or commissio-
ning when the device cover is open, water does not go
inside the enclosure.
WARNING:
During calibration and tuning the valve operates bet-
ween open and closed positions. Make sure that the
operation does not endanger people or processes!
WARNING:
Do not operate the device with the cover removed!
Electromagnetic immunity is reduced, valve may
stroke.
Ex WARNING:
The locking screw (part 107) of the cover is essential
to explosion protection.
The cover has to be locked in place for Ex d protection.
The screw grounds the cover to the housing.
Ex WARNING:
Spark hazard!
Protect the aluminium housing and cover from impacts.
Ex WARNING:
Electrostatic charge hazard!
The pointer and display windows are non-conductive.
Clean with a damp cloth only!
Ex WARNING:
Electrostatic charge hazard!
The paint of the device can enable charging of the metal
parts by high voltage sources. Do not install the device in
proximity of high voltage sources!
Ex i WARNING:
Ensure that the complete installation and wiring is
intrinsically safe before operating the device!
Ex i WARNING:
Do not operate the device with electronics cover (part
39) removed!
Electromagnetic immunity is reduced, valve may stroke.
Ex i: intrinsic safety may be impaired.
Ex i WARNING:
For intrinsically safe applications, the equipment must
be connected via a certified Zener barrier placed outs-
ide the hazardous area!
Ex d NOTE:
Only persons familiar with Ex d explosion protection
are allowed to work with the device. Special attention
has to be paid to careful handling and closing of the
cover.
Ex d WARNING:
Do not open the cover when an explosive atmosphere
may be present!
Ex d and Ex n WARNING:
Use a cable gland with suitable Ex d and Ex n certifica-
tion.
For ambient temperature over 70 °C / 158 °F use a heat
resistant cable and cable gland suitable for at least
90 °C / 194 °F.
ELECTRICAL SAFETY WARNING:
Use fuses for limit switch installations with
50 V AC / 75 V DC or higher.
NOTE:
Avoid earthing a welding machine in close proximity to an
ValvGuard.
Damage to the equipment may result.
CAUTION:
Make sure that the ventilation output of the housing is
not blocked!
This can prevent the safety function of the device.
