Haier 3150 SA Sanitary Pump, 3A Pump, diaphragm plate side high strength thread lock, shaft side

Service

.

121445 446* 447 143 444

Y

Sanitary Pump

TI8772a

121 445 446*

3A Pump

TI8773a

FIG. 17

Reassembly

1.Install the shaft u-cups (110) so the lips face out of the housing (101). Lubricate the u-cups. See reas- sembly of bearing and air gasket removal, page 24.

2.Non 3A approved diaphragms: Assemble dia- phragm (446), backer (447) if present, and plate (445) onto plate (444) with screw (143). Rounded side of plate (445) should face diaphragm. Make sure the side marked AIR SIDE faces the center housing.

3A approved diaphragms: Assemble plate (445) onto diaphragm assembly (446). Round side of plate should face diaphragm.

Thread locker must be applied to screw (143) and to threads of 3A diaphragm assembly as shown in FIG. 19 for all diaphragm assemblies.

diaphragm plate side: high strength thread lock

101 121 445 446* 447 143 444

7.Pull the other diaphragm assembly and the dia- phragm shaft (121) out of the center housing (101). Hold the shaft flats with a 19 mm open end wrench, and remove the diaphragm assembly from the shaft. Disassemble the remaining diaphragm assembly.

101 121

TI4789a

FIG. 18

8.Inspect the diaphragm shaft (121) for wear or scratches. If it is damaged, inspect the bearings

(117)in place. If the bearings are damaged, refer to Bearing and Air Gasket Removal on page 23.

9.Reach into the center housing (101) with an o-ring pick and hook the u-cups (110), then pull them out of the housing. This can be done with the bearings

(117)in place. See FIG. 22.

10.Clean all parts and inspect for wear or damage. Replace parts as needed.

Sanitary Pump

shaft side:

medium strength thread lock

TI8774a

101 121 445 446*

3A Pump

medium strength thread lock (bolt not shown)

TI8775a

FIG. 19

3.Screw assembled diaphragm assembly into shaft (121) and hand tighten.

22 310622L