Hydrophobic Filter; Collection Jar - MGE UPS Systems SAM Operating And Maintenance Manual

SAM e.p.s – UK
Operation and Maintenance Manual
The life of the battery is dependent on its ability to hold sufficient charge to operate the SAM e.p.s. The
chemical process of continual charge and discharge has an effect on that ability over a period. The battery in
time, will reach a point whereby it is unable to hold a sufficient charge to satisfactorily operate the unit and
achieve the performance outlined above. The battery must then be replaced.
Battery Storage
The battery can be stored in a charged or discharged state, and at temperatures between -20°C and +45°C
when installed in the SAM e.p.s. Heat can cause deterioration of the active chemicals and it is better to store
batteries in a cool, clean, dry, environment at a temperature between -20 C and +20 C. If the battery is to be
stored long-term without charging, changes may occur that can temporarily reduce the battery's capacity and
voltage under load. Before returning a battery to service, it may be necessary to charge and discharge it, to
bring it up to capacity. If capacity remains low then the battery should be replaced.
Process Control and Service
The main PCB controls and communicates with the other two PCB's via a single 16W ribbon cable.
The processor contains non-volatile memory that is used to store operational data. This data is divided into 2
sections – one that may be reset and another that remains for the life of the unit.
Data that may be reset includes operational time for each pressure setting, the time the batteries have been in
fast charge and the number of cycles. Data that may not be reset includes 'life' operational time of the unit
and the number of data resets.
This data is monitored by the microprocessor and when operation time exceeds 500 hours then the service
LED is illuminated. A service is also requested after 500 fast charge cycles. It should be noted that this does
not affect the performance of the unit in any way and is purely for indication
The data is accessed via the Data port on the main PCB. The Data Capture software MSP1456 is Windows
based and used to download and save this data. It may also be used to reset the data, thereby cancelling a
service request.
For non-windows based systems, a simple terminal emulator may be used to access the data. The Baud rate
is 9600, 8 data bits, no parity. To retrieve the data enter #PRINT followed by carriage return. To reset the data
enter #RESET again followed by carriage return.
Resetting the Unit
If the unit appears not to be functioning correctly, always after a battery disconnection or reconnection then
simply turning the control knob to the OFF position then ON and back OFF will result in a PCB reset.
If the unit still appears not to function correctly, it should be returned to a qualified technician for further
diagnosis.
Flow Diagram
Hydrophobic
Sensor
Filter
Patient
Solenoid Valve
Exhaust
Vacuum Pump
Collection
Jar
Manual 156 - Issue 08 Page 15 of 28