5 Maintenance
Draining and replacing the MS120+ pump oil
101 Agilent Triple Quadrupole LC/MS System User Guide
Draining and replacing the MS120+ pump oil
Schedule
Drain the pump when any of these conditions occur:
• 8000 hours scheduled, or yearly
• when oil is dirty
• when the oil reaches the minimum level
Equipment List
• Clean chemical-resistant gloves
• Safety glasses
• Funnel
• 10-mm hex key
• Paper towel or shop rag
• Small plastic tub
• AFV 60 Gold Oil
Steps for draining the MS120 pump oil
1 Put on clean, chemical-resistant gloves.
2 Ensure that the wheels of the pump are locked and braked securely before
proceeding.
3 Turn off the pump and wait for the oil to cool for approximately 40 minutes or
more.
4 Remove the cover by unscrewing the screws holding it in place. Place the
cover and screws in a secure location.
5 Place a drain pan or small plastic tub, approximately 3 liters in size, under the
pump tank.
6 Unscrew the oil filling plug and place it in a secure location.
7 Remove the oil discharge plug, clean the inside, and place it in a secure
location.
8 Screw the oil drain pipe onto the discharge.
9 Allow the oil to drain through the pipe into the drain pan. To ensure complete
drainage, raise the back wheels of the pump by 40 mm.
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