FlowAct Diaphragm Linear Actuator FCD VLENIMFACTA4 10/16
10
11 Valve Quick-Check
Apply appropriate personal protective equip-
ment when working on the control valve to
prevent hazards arising from the operation.
Protect yourself against freezing, burns and
cuts by wearing appropriate protective cloth-
ing, gloves and eye protection.
Do not over-tighten packing.
Sudden exposure of the control valve to full
working pressure and temperature may cause
stress cracks.
Prior to valve operation, we require, that you check the following conditions to reduce the risk of malfunction and safety
related incidents.
No.
Important information
Possible malfunction or safety related incident
1
Avoid critical operating conditions where excessive noise
or vibration levels might occur.
Impermissible continuous operation of a control valve
under critical conditions can damage the valve.
2
Avoid frequent system start-ups and shutdowns.
Critical operating conditions, which can damage the
control valve, may be encountered during system start-up
or shut down.
3
Keep the operating medium free of foreign particles.
Installing a suitable strainer upstream of the control valve
can prevent foreign particles from damaging the valve.
4
Instrument air must conform to ISA 7.0.01-1996 (with a dew
point at least 18 °F (10 °C) below ambient temperature, par-
ticle size below 1 µm and oil content not to exceed 1 ppm)
Contaminated instrument air can damage the accessories
and diaphragm linear actuator or cause them to fail.
5
Do not touch the body and bonnet ! The tempera-
ture of the operating medium is transferred to the
surface of the linear actuator.
Excessive hot surface temperatures can put you at risk for
burns.
Frigid surface temperatures can put you at risk for
freezing.
6
Critical operating conditions can cause exces-
sive or hazardous levels of vibration or noise.
Impermissible levels of vibration can cause hearing
loss, vascular and nerve damage and damage to joints
and bones. Use hearing protection when noise levels
exceed 80 dB(A).
7
Incorrect maintenance can result in the emission
of hot, cryogenic, and / or toxic operating media.
Incorrect maintenance can put you at risk for heat
related burns, freezing, acid burns or poisoning.
Table 5: Basic safety massages for operating the valve
Reassemble the valve into the pipe
1. Remove the protective flange covers and coating from
the control valve; clean the flange gasket surface.
NOTICE
Unsuitable cleaning agents can dam-
age and cause leakage in PTFE and
graphite gaskets. Review a current chemical resis-
tance list before applying.
2. Install the valve so that the actuator is in an upright po-
sition whenever possible. Vertical installation permits
easier actuator maintenance.
3. Install and connect the control valve to the pipeline.
Locate gaskets in the center of the body flanges and
secure nuts and bolts.
4. Connect the air supply and instrument signal lines.
