LC Packings SWITCHOS II, Руководство пользователя

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Maintenance and Troubleshooting
6-6
D850R3
User’s Manual Switchos II
6.3.4 Disassembling the Pump Head/Replacing Piston Seals
To disassemble the inert pump head (titanium inlays):
a) Remove the pump head and the piston rods (Section 6.3.3).
1
2
4
5
6
3
7
8
10
11
13
18
16
13
Orientation Mark
Flow
Detail of ‘13’
9
12
15
15
17
14
14
Item Description P/N
- Inert Pump Head 161399
1 Recessed-Head Screw -
2 Retaining Plate -
3 Piston Rod 160047
4 Guide for Spring -
5 Spring -
6 Spacing Bolt -
7 Support Washer -
8 Piston Seal (backflushing) 161020 1
9 Pressure Plate -
10 O-Ring 160084
11 Piston Seal (high pressure) 161020 1
12 Titanium Inlay 161400
13 Check Valve Cartridge 160049
14 PEEK Adapter 162300
15 Check Valve Bushing 161071
16 Set Screw -
17 Backflushing Connection -
18 Connecting Tubing Pump Head 162010 2
161023 3
Stainless steel
Titanium
Notes: 1) Set of 4 piston seals (includes two high pressure seals and two
backflushing seals)
2) Used with the standard (stainless steel) version of the Switchos only.
3) Used with the inert version of the Switchos only.
FIGURE 6-5. The Inert Pump Head Assembly
b) Loosen the two screws that attach the retaining plate to the pump head
(items 1, 2; FIGURE 6-5). As you remove the screws, alternate from one to
the other as long as the springs are loaded to avoid damaging the retaining
plate.
Note: Since the springs (item 5; FIGURE 6-5) exert a significant amount of force,
care should be taken when the screws are loosened.