Operating Instructions – Labmaster
©
130 and MB20G Systems
Instruction Manual
Chapter 10: Maintenance & Troubleshooting
© MBraun, Inc. Edition 1/2007 Page 10-12
10.6 Alarms
General Information
The following troubleshooting guidelines address the possible alarm warnings that the user may
encounter during operation of the system.
Contact MBRAUN directly with any questions that arise while
attempting to troubleshoot the system or if an alarm message is
displayed that is not included below. Do not attempt to resolve the
problem.
Circulation Gas Flow
There is no gas flow to the experiment during circulation process.
Check the gas supply line.
Is there gas from the main supply line into the
system?
Yes – proceed to next step.
No – turn on gas supply and continue normal
operation. Proceed to next step if there is still no
gas flow to the experiment.
Check the valve activation gas supply for
correct flow rate (between 50 and 80psi) and
adjust, if necessary.
Did this correct the problem?
Yes – continue normal operation.
No – Proceed to next step.
Check the connector plug on each VHA & VHE
valve to ensure it is securely tightened to the
valve body.
Did the valve open?
Yes – continue normal operation
No – contact M.Braun Service Department.
Regeneration Gas Flow
There is no gas flow through the system during regeneration process.
Check the gas supply line.
Is there gas from the main supply line into the
system?
Yes – proceed to next step.
No – turn on gas supply and continue normal
operation. Proceed to next step if there is still no
gas through the system.
Check the gas supply for correct flow rate
(between 5 and 10psi) and adjust, if necessary.
Did this correct the problem?
Yes – continue normal operation.
No – Proceed to next step.
Check the connector plug on each VRE and
VRS valve to ensure it is securely tightened to
the valve body.
Did the valve open?
Yes – continue normal operation
No – proceed to next step
Check each VRE and VRS valve on the active
filter for a yellow LED which indicates there is a
signal being sent to the valve from the PLC.
Is the light on?
Yes, the light is on but the valve is not open and
there is no flow to the experiment. – contact
M.Braun Service Department.
No – contact M.Braun Service Department.
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