Waters ACQUITY - Connecting the Standard Instrument’s Backing Pump

D.2 Connecting the Standard instrument’s backing pump
The Standard instrument uses a diaphragm pump attached to the back of the instrument.
Note: To connect the Performance instrument’s backing pump, see Connecting the Performance
instrument’s backing pump.
Required materials
• Chemical-resistant, powder-free gloves
• Phillips screwdriver
• Diaphragm vacuum hose (included in the installation kit)
Warning: To avoid personal contamination with biohazardous or toxic compounds, wear clean,
chemical-resistant, powder-free gloves when performing this procedure.
To connect the diaphragm pump:
1. Hook the pump onto the 3 diaphragm pump supports on the rear of the instrument, shown
in the figure "Rear panel connections" (see External wiring and vacuum connections).
2. Secure the pump to the instrument using the 2 screws and tighten them using the Phillips
(cross-head) screwdriver.
3. Connect the length of diaphragm pump vacuum hose in step 2 to the 1-inch OD straight
vacuum port on the instrument’s rear panel.
Notice: The instrument requires two separate exhaust systems: one for
nitrogen, the other for the backing pump. Vent them to atmosphere through
separate exhaust lines. Oil mist can severely damage the instrument if the
nitrogen exhaust line connects with the backing pump exhaust line. Your
warranty does not cover damage caused by routing exhaust lines incorrectly.
4. Route the open end of the exhaust tubing to a suitable exhaust vent.
5. Connect the diaphragm pump cable to the backing pump connector on the instrument’s
rear panel shown in the figure "Rear panel connections" (see External wiring and vacuum
connections).
Requirement: When using the diaphragm pump, ensure that the 0.09-mm entrance-
aperture disc is installed.
June 15, 2017, 715003956 Rev. F
Page 84