Maintaining The Syringe Pumps - Thermo Scientific EASY-nLC 1200 Troubleshooting And Maintenance Manual

5
Routine Maintenance

Maintaining the Syringe Pumps

Maintaining the Syringe Pumps
70 Troubleshooting & Maintenance Guide
5. Make sure that the fuse ends align with the mounting brackets.
Note The fuse holder holds two fuses. One fuse is for a 220–240 V line power and
the other is for a 110–120 V line power.
6. Insert the fuse holder into the power entry module in the orientation that corresponds to
the operating power.
The triangle to the right of the voltage rating points toward the white mark at the bottom
of the power entry module
Figure 52. Power entry module
Each pump contains a piston seal and a piston. Over time, the buffered solutions leave
deposits on the pistons, and through constant contact with the moving pistons, the piston
seals slowly deteriorate.
CAUTION Overtightening stainless steel viper solvent lines damages their fittings.
To replace a pump piston seal and clean the piston, follow these procedures:
1. "Retracting the Piston"
2. "Replacing the Piston Seal"
(Figure 52).
Appropriate orientation for 220–
240 line voltage
on page 72
on page 73
Thermo Scientific