Maintenance of a Pump Head without Seal Wash

适用于

In case of maintenance or pump head internal leaks

所需工具

数量	部件号	描述
1	8710-0510	开口扳手 1/4-5/16 英寸
1		4 mm 六角扳手
1	01018-23702	插入工具

所需部件

数量	部件号	描述
1	5063-6589	计量密封垫（每包 2 个），用于 100 µL 分析头 , OR
1	0905-1420	PE 密封垫（每包 2 个）
1	5063-6586	蓝宝石柱塞杆，100 µL

前提条件

Switch off the pump at the main power switch.
Open the doors of the module.
Use an optional solvent shutoff valve or lift up solvent filters for avoiding leakages.
Remove the Pump Head Assembly.

注意

Both pump head assemblies use the same internal components. In addition, pump head A is fitted with the purge valve. The following procedure describes the removal and disassembly of pump head A (left). For pump head B (right) proceed in the same way and skip steps that deal with the purge valve.

Place the pump head on a flat surface. Loosen the lock screw (two turns).
While holding the lower half of the assembly (piston housing), carefully pull the pump housing away from the piston housing.
Remove the support rings from the piston housing.
Lift the housing away from the pistons.
Check the piston surface and remove any deposits or layers: clean the piston surface with abrasive paper and rinse with 2-propanol. Replace piston if scratched.
Using the steel side of the insert tool, carefully remove the seal from the pump housing.
Using the plastic side of the insert tool, insert new seals into the pump head.
Place the support rings on the piston housing. Note the correct position of the pins on the support ring.
Place the pump housing onto the piston housing.
Insert the pistons and carefully press them into the seals.
Tighten the lock screw.
Install the pump head, see Reinstall the Pump Head Assembly .

21-6月-2025