DB-300-910
4.3 Maximum allowable pressure
The whole system must be designed and operated in
order to guarantee that the maximum allowable pres-
sure in the pressure vessel cannot be exceeded.
Pressure relief valves are absolutely necessary if
• it is to be expected that the maximum allowable
pressure will be exceeded due to external heat
sources (e.g. fire), or if
• the entire refrigerant charge of the system is more
than 90% of the vessel volume at 20°C. Vessel
volume means the volume between the valves be-
fore and after a pressure vessel, which can be shut
off during normal operation. In case of vessels in-
stalled in series, it is the volume of all vessels and
the connecting pipe.
In these cases, pressure relief devices should be in-
stalled to direct the refrigerant or the oil towards the
low-pressure side of the system (emission reduction).
Safety switching devices for limiting the pressure
According to the local regulations, safety switching
devices for pressure limiting must be provided.
4.4 Removal clearance for probe
• Option
• Liquid receivers FS202 .. FS5502
If the probe for infinite liquid level monitoring is moun-
ted or should be retrofitted, the liquid receiver must be
mounted such that the probe can be taken out upwards
(see figure 1, page 10).
Fig.1: Removal clearance for probe
Type Removal clear-
ance for probe
(= X)
Probe kit
FS202 1000 mm 34740501
FS252 1160 mm 34740502
FS302 / FS562 1280 mm 34740503
FS402 / FS732 1530 mm 34740504
FS2202 /
FS4002
1640 mm 34740505
FS902 / FS4752 1740 mm 34740506
FS1122 1280 mm 34740503
FS1602 /
FS5502
2040 mm 34740507
FS3102 2140 mm 34740508
To Next Page
Loading...
Need help?
General
