MGE UPS Systems SAM 35 - Monthly Maintenance; Three Monthly Maintenance

SA 35 and SA 36
Operation and Maintenance Manual
Manual 118 Issue 15 Page 14 of 28
4.2 Monthly Maintenance
• Carry out the daily maintenance procedure.
• Check the vacuum and the flow at the collection container top.
• With the collection container empty and the vacuum control valve set to maximum, switch
on the unit and read the indicated vacuum on the gauge. Occlude the suction inlet
(Patient connection) on the collection container top and note the time taken for the gauge
to indicate an increase to 450mm Hg (60 kPa) vacuum. This time should not exceed 10
seconds.
• The gauge should continue to rise and stabilise to indicate the maximum vacuum
available, and this should be not less than 590mm Hg (78.7 kPa).
• Replace the exhaust filters in the exhaust outlet housing located on the side of the casing
and marked ‘Exhaust Outlet’.
4.3 Three Monthly Maintenance
• Carry out the monthly procedure. Poor performance of the unit would indicate the internal
pump requires maintenance
Warning! Always electrically isolate the SA suction unit from the mains power supply
before carrying out any cleaning, maintenance or repairs. Electrical isolation of
the SA suction unit is by removal of the mains power cable from the mains
power supply.
• Remove the back cover.
• Check the internal and external tubing for ageing or wear. Replace with equivalent tubing
where necessary. Tubing to gauge ∅5mm I/D, wall thickness min 2mm, all other tubing
on the SA suction unit ∅6mm I/D, wall thickness min 3mm.
• Replace the internal hydrophobic filter. Details in section 4.6 Replacing the Internal
Hydrophobic Filter
• Check the internal wiring for ageing or wear. Replace with equivalent material and
terminations where necessary.
• Examine the mains cable for wear or damage and replace if necessary using equivalent
cable.
• Replace the back cover. Do not overtighten the rear cover fixings. (Recommended
torque 20 cNm)
• Examine the overflow valve float mechanism (SA 2) to ensure that this has free
movement.
• Check the vacuum and flow performance at the collection container as previously
described