10. Remove the valve plate (108) and the piston
(107). Remove the bearings (110) from the
piston.
11. Stand cylinder upright. Remove the u-cup seal
assembly, which includes the base (103a), insert
(103b), o-ring (103d), and u-cup (103c).
12. Clean the parts and inspect them for wear or
damage. Replace them as necessary.
Reassemble
Reassemble
Reassemble After
After
After Cleaning
Cleaning
Cleaning
Note:
Note:
Note: Any damaged parts must
must
must be replaced as they
could harbor microorganisms that can contaminate
the fluid.
Note:
Note:
Note: Lubricate the o-rings, throat packings, and
piston seals with appropriate waterproof sanitary
lubricant prior to installation.
1.
Wash all pump parts with an appropriate cleaning
solution at the cleaning product manufacturer’s
recommended temperature and concentration.
2.
Rinse all pump parts again with water and allow
them to dry.
3.
Inspect all pump parts and reclean if needed.
4.
Immerse all pump parts in an appropriate
sanitizer before assembly. Take the pump parts
out of the sanitizer one-by-one as needed.
5.
Lubricate the moving pump parts and o-rings,
packings, and seals with appropriate waterproof
sanitary lubricant.
6.
Install the bearings (110) and the u-cup seal
(109) on the piston (107). The lips of the piston
u-cup must face up. Install the valve plate (108)
and piston assembly on the displacement rod
(105). Cutout on piston must face down.
7.
Use wrenches on the displacement rod flats and
the piston rod flats to reconnect. Torque to 60-70
ft-lb (81-95 N•m).
8.
Install the packing stack (116*) into the intake
valve housing (115). Maintain the following
order: shims (116a), female gland (116b), five
v-packings (116c) with the lips facing up, and
male gland (116d). Loosely thread packing nut
(117) into the valve housing (115).
9.
Install the u-cup (103c) and insert (103b) into
the u-cup seal assembly base (103a). Throat
u-cup lips must face down. Then install the o-ring
(103d).
10. Lubricate the displacement rod/piston rod
assembly and slide into the cylinder from the top.
11. Install the u-cup assembly (103) in the top of the
cylinder (101). Reassembly may be difficult. Use
steady force until the assembly drops into place.
12. Turn the pump on its side. Use a rubber mallet
to tap the displacement rod so the piston rod
extends well out of the cylinder.
13. Install the valve plate (112) and the spacer (113)
into the bottom of the cylinder. Install the cylinder
o-ring (123).
14. Lubricate the piston rod and the inside of the
packing nut (117) and intake valve housing (115).
Slide the assembly onto the piston rod, then use
two wrenches to tighten the valve housing.
3A5799E
5
