AFRISO KP EX Series, Руководство по эксплуатации

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Additional equipment
EN
RF ... EX / KP ... EX / PF ... EX
9.5 Overpressure safety device

If, for operational reasons, the range must be smaller than the maximum
operating pressure, install an upstream overpressure safety device to
help protect the product from damage.
In the case of a pressure surge, the overpressure safety device closes imme-
diately, in the case of a slow pressure increase, it closes gradually. Therefore,
the closing pressure to be set depends on the values along the progression.
9.6 Pressure gauge with maximum pointer
Since Bourdon tubes have a relatively small resetting force, you must
account for their influence when installing a maximum pointer. Maximum
pointers may only be used with pressure gauge types D4 and D8 at a mini-
mum range of 6 bar.
WARNING
OVERPRESSURE SAFETY DEVICE WITHOUT EFFECT
Highly viscous and polluted media can render the overpressure safety device
ineffective.
•
Do not use highly viscous or polluted media if you have installed an overpres-
sure safety device.
Failure to follow these instructions can result in serious injury or equip-
ment damage.