Pfeiffer Vacuum A 1204H, Operating Instructions Manual

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Operation
6.2.2 Pumping start-up
Press START key, valid with ENTER , the pumping starts. The Running green indica-
tor lights on.
The following operations will perform automatically:
– FB pump starts up,
– purge gas valve opens,
– Roots pump starts up,
– inlet valve opens (if any and if set).
The operating parameters are displayed.
Gain access to other operating parameters using + or –
keys.
Only installed and set functions are displayed.
6.2.3 Auto-restart configuration
By default setting, automatic restart is set to [DISABLED] (see 8.2) .
6.2.4 Start-up after an emergency stop
To restart the pump after an emergency stop, it is necessary to:
fix the problem,
rotate the emergency button to unlock,
position the main switch to O than to I position,
press START to start the pump and valide with ENTER .
6.2.5 Option Roots command
To start or stop the Roots while the FB is running, set the [CMD.ROOTS] on [ENABLED]
when the pump is stopped.
The Roots will start or stop by pressing the ROOTS key if [CONTROL MODE] is [HHR]
(see 4.3) or with J1-S3 contact if [CONTROL MODE] is [REMOTE ] (see 8.3.2) .
6.3 Pump shut-down
6.3.1 Pumping stop
Press on STOP key and valid with ENTER .
The following operations will perform automatically:
– inlet valve closes (if any and if set),
– pump(s) stop(s) (FB and Roots),
– injection of purge gas continues during the shutdown phase if timing of [PURGE PRO-
LONG] has been set (0 to 120 min) (see 8.3.2) and (see 7.1.3) .
10h
RUNNING FIXE SPEED
BF FREQ: 60 Hz
R1 FREQ: 100 Hz HHR
R P
DANGER
Risk due to auto-restart
When the pump has been set for automatic restart after a power failure, the pump re-
starts when the power is switched back on.
Take all the measures required to prevent risks resulting from this type of operation.