ICI Caldaie ASX1000, Instructions For Installation, Use And Maintenance Manual

Page: 15 / 48

General information
15
SAFETY VALVES
The safety valves are able to maintain the pressure in the generator to the design pressure (save temporary peaks of 10% max of
the max PS of the whole) even if all other pressure control devices (pressure switches and transmitters) are out of use.
These valves are regulated by specific national and international standards, therefore they are sized, tested, installed and maintained
in compliance with the applicable regulations and the contents of this manual.
The
use and maintenance manual
is supplied with the safety valves.
The main components of the safety valve are:
1 Lifting lever
2 Hat
3 Spring
4 Valve body
5 Cap
6 Drainage hole (if any)
SC Drain
IF Fluid inlet
a
ATTENTION
Drainage hole placed at the bottom of the valve body (6).
Drainage hole with diameter ¼” BSP-f until DN80.
For higher DN sizes, the hole diameter is equal to ½” BSP-f.
Remove the red plastic cap (if any) and provide for collecting draining suitably. (provided by the customer).
For further information, refer to the supplier’s manual.
m
IMPORTANT
Before starting the generator, remove the steel wire that blocks the lever during transport. Make sure that the lifting
lever is free to move.
In case of conveyed drain, bracket the conveying pipe to compensate the reaction force generated when the fluid is drained.
Make one or more draining holes in the conveying pipe to drain any condensate.
Drain must take place in the atmosphere, direct the valve so as not to harm people or damage property.
Interception valves must not be provided.
The exhaust pipe must be designed in such a way that any
low temperatures do not create ice that ob-structs the
outlet.
N.B.: Bracket at no more than 1 m away
m
IMPORTANT
The operation of the safety valves is sensitive to pressure losses that occur in the drain conveying pipe during their
opening. The pressure losses in the drain conveying pipe of the safety valves must be 0. The nominal diameter of the
exhaust pipe must be greater than or equal to the size of the safety valve outlet connection. A diameter ≥ 1.5 DN
(PSV) is suggested.
Cooke Industries - Phone: +64 9 579 2185 Email: sales@cookeindustries.co.nz Web: www.cookeindustries.co.nz