Valve Quick-Check - Flowserve MaxFlo4 User Instructions

10 Valve Quick­Check
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.
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
1 Avoid critical operating conditions where excessive noise
or vibration levels might occur.
2 Avoid frequent system start-ups and shutdowns.
3 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)
4
Do not touch the body and bonnet ! The tempera­
ture of the operating medium is transferred to the
surface of the control valve.
5
Critical operating conditions can cause exces­
sive or hazardous levels of vibration or noise.
6
Incorrect maintenance can result in the emission
of hot, cryogenic, and / or toxic operating media.
Do not over­tighten packing.
Sudden exposure of the control valve to full working
pressure and temperature may cause stress cracks.
Impermissible continuous operation of a control valves
under critical conditions can damage the valve.
Critical operating conditions, which can damage the
control valve, may be encountered during system start-up
or shut down.
Contaminated instrument air can damage the accessories
and control valve or cause them to fail.
Excessive hot surface temperatures can put you at risk for
burns.
Frigid surface temperatures can put you at risk for
freezing.
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).
Incorrect maintenance can put you at risk for heat
related burns, freezing, acid burns or poisoning.
Table 3: Basic safety messages for operating the valve
MaxFlo 4 Control Valve FCD VLENIM0064-02-AQ – 09/16
Possible malfunction or safety­related incident
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