Mounting Fisher 4320 To Thej Series Valve; Installation - Emerson Crosby J Series Installation, Operation And Maintenance Manual

CROSBY J SERIES PRESSURE RELIEF VALVE WITH FISHER™ 4320 WIRELESS POSITION MONITOR
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
3 MOUNTING FISHER 4320 TO THE
J SERIES VALVE
WARNING
Before mounting the 4320 wireless position
monitor:
• Always wear protective clothing, gloves, and
eyewear when performing any installation
procedures.
• Check with your process or safety engineer for
any additional measures that must be taken to
protect against process media.
• Failure to do so may result in injury to personnel
or cause damage to the equipment.

3.1 Installation

Before disassembling the pressure relief valve
ensure that the valve has been decontaminated
from any harmful gasses or fluids and that it
is at a safe temperature range for handling.
Fluids can be trapped inside of the pressure
relief valves.
1. Do not take 4320 off from bracket to avoid
additional adjustment. Remove the bracket
with 4320 assembly TOGETHER from the
valve carefully, then remove the calibration
plate.
2. Check the Cap slot to ensure there is no
sediments, paints and debris before the cap
is installed. Place the Cap on the valve, and
place the Bracket mounting with 4320 on
top of the Cap. Preferred Bracket position
is opposite the outlet, over the Nozzle Set
Screw.
FIGURE 3-1
Magnet Bracket Assembly
3. Place the cap on the valve with the
Fisher 4320 mounting bracket. Preferred
bracket position is opposite the outlet, over
the nozzle set screw. Tighten the cap Nuts.
FIGURE 3-2
4320 Bracket Assembly
4. Check 4320 reading is still in -4% to -7%
range. Tighten the cap Nuts by torque force
listed in Table 2, Location 4.
NOTICE
If the reading is off from -4% to -7% range, loose
the bracket screws, slightly move 4320 up and
down until the reading is acceptable. Then secure
the 4320 in place on the bracket with the four
M6 x 10mm hex cap screws and lock washers
with torque force at Table 2, Location 2 when the
adjustment is completed.
Changing the valve position will result in the
calibration attempt being unused or discarded.
WARNING
During operation the valve must move full stroke
freely, keep all the free travel areas without
obstructions of any kind.
Failure to do so may result in injury to personnel
or cause damage to the equipment.
FIGURE 3-3
FREE Travel Areas
5. Attach the alarm tag on the bracket to alarm
the magnet target travel area free from any
tools or objects.
FIGURE 3-3
FREE Travel Areas
WARNING
Use only genuine Emerson replacement parts.
Components that are not supplied by Emerson
should not, under any circumstances, be used.
Use of components not supplied by Emerson may
void your warranty, might adversely affect the
performance of the instrument and could cause
personal injury or property damage.
Failure to do so may result in injury to personnel
or cause damage to the equipment.
6. The 100% position can be verified by
removing any spring load and lifting the
valve either thru the nozzle bore or at the
disc holder in valve outlet until the valve
stops. If the 4320 was calibrated per Table 1,
the full lift 100% valve open value will be
exceeded due to manufacturing tolerances.
The Cap will need to be removed to access
the Adjusting Bolt to remove spring force
and allow sufficient valve travel when lifting.
If the screen reading is less than 100% than
the Adjusting Bolt will need to be moved
out further. The Cap can be reinstalled per
listed instructions.
7. Check to be sure the 4320 reading is still
in -4% to -7% range before the valve is
installed on the system. If after installation
any adjustments are required repeat the
steps described in this section.
6