thuba PS 830, Руководство пользователя, Страница: 37 / 72

Manual BVS 19 ATEX E 080 X 33
Edition March 2020 thuba Ltd., CH-4002 Basel
Copyright Switzerland
5.3 Keyboard
The four multi-functional keys have different
meanings and functions depend on the present
operation mode.
5.4 Indication modes during normal
operation
The actual status of the Ex pzc- System is gen-
erally shown on the info display. Using the
“Down- button the user can toggle to the pres-
sure and remaining purge time indication.
5.5 How to enter and leave the bypass
mode
Utilizes bypass only, if it is sure that no
explosive atmosphere is inside the cabinet!
Key Operation
mode Function
On/Off
«Shift right»
button
normal
operation
running
menu
none
Shift cursor one position right
BYPASS
«Up»
button
normal
operation
running
menu
Sctivates Bypass; i.e. enable
toggle ignition-capable device
on or off independently of the
purging status
(Be sure, that no
explosive atmosphere
is in environment)
Get next menu item
INFO
«down»
button
normal
operation
running
menu
Changes indication of the dis-
play: present pressure, flow
rate, remaining purge time and
present state of the purging
system
Get previous menu item
MENU
«Enter»
Taste
normal
operation
running
menu
Enters main menu
Initiates and confirms parameter
input