Pfeiffer ASM 340 - 7.4.10 Regeneration; 7.4.11 Massive Mode

Advanced settings
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● Digital Transistor Output 9 – 28 = Bypass
 If set otherwise, set like this: see 37 pin I/O board Operating instructions.
(*) In this case, correcting leak rate to be applied
7.4.10 Regeneration
This function is used to remove the tracer gas from the detector by automatically carrying
out a series of short tests and inlet vents between each test.
 Check that the detector is on Stand-by and that inlet vent is ’automatic’.
 From the "Settings" screen, press [Test] [Regeneration].
 Block the detector's inlet port with a blanked-off flange.
 Press [Start]: regeneration will stop automatically after 1 hour.
 To stop regeneration before the automatic stop time, press [Stop] in the menu or
. Start a test ("Zero activation" function not activated) to check that the detector
is no longer polluted.
 Restore inlet vent to the configuration prior to regeneration.
7.4.11 Massive mode
This mode allows the detector to carry out a test (
4
He only) on a very gross leak.
Press [Test] [Bypass Option].
Mode None = External Bypass pump installed but not active
Quick pump = External Bypass pump active only during roughing
Partial flow = External Bypass pump active during roughing and test + leak rate cor-
rection to be applied
Evac. Delay On = roughing only via the external Bypass pump.
Off = roughing via the external Bypass pump and the detector’s primary pump.
1
st
case 2
nd
case 3
rd
case 4
th
case 5
th
case
Pumping Roughing Primary Pump
detector
only
Bypass Pump
external
only
Bypass Pump exter-
nal only
Bypass Pump
external
+
Primary Pump
detector
Bypass Pump
external
+
Primary Pump
detector
Cross over threshold test Gross Leak (25 mbar by default)
Test Pumping Detector
only
Pumping Detector
only
Bypass Pump
external
+
Pumping Detector (*)
Pumping detector
only
Bypass Pump
external
+
Pumping Detector (*)
Setting Mode None Quick Pump Partial Flow Quick Pump Partial Flow
Evac. Delay On/Off On On Off Off
NOTICE
Before launching this function, make sure that the leak detector is in an environ-
ment free of tracer gas pollution.
This function is recommended when the detector's background is high or when
the part or installation to be tested has high level of tracer gas.
To launch the function from the control panel, set a function key to [Regeneration]
(see 7.7.2).
From the "Settings" screen, press [Test] [Massive Mode].
Active  Activate massive mode.
Sensitivity  Select the sensitivity
• High = test on large volume (initial setting, recommended).
• Low = test on volume < 1 l (if necessary).