ARI Armaturen ARI REYCO RL969 EN - Manual (Page 14)

Page 2-14 Rev. 0040404000 4113
Operating and installation instructions
ARI-REYCO R / RL Series
Injury owing to medium. Danger of injury from medium (e.g.
liquids) emerging from valve. Replace safety valve.
Select design with closed bonnet and
cap.
Install a guard if necessary.
Injury from vapour discharge
(open bonnet / cap) Install a guard if necessary
Flattering. Pressure loss >3% in line to valve. Reduce resistance by chamfering or
radius in connection socket. Select
larger line if necessary.
Poor welding (root pass), gaskets at
inlet and outlet flanges too small or not
concentric. Change conditions.
Safety valve capacity too high. Install smaller safety valve.
Burner capacity too low. Install smaller safety valve.
Blow-off line too long or diameter too
small. Use larger diameter or back-pressure
compensation by stainless steel
bellow.
Inlet and/or outlet socket too small. Install with dimensions larger than DN
of inlet and outlet lines.
Back-pressure higher than 10%. Install stainless steel bellow for
pressure compensation.
Capacity too low. Safety valves not applied unsuitable for
plant conditions. Select and install suitable safety
valves.
Safety valve not applied in line with
current rules. Adjust conditions.
Fault Possible cause Corrective measures