O-Ring Removal And Care - Stoelting 219 Owner's Manual

E. Place top lock plate (13) and clamp rod (14) over
end of pump cylinder and mix transfer tube. Secure
with two hand nuts (12) and finger tighten.
(See Fig. 7)
F. On hopper models: position hopper rear cover over
assembled pump body. Assemble washer (2) and
large hand nut (1) onto top lock plate (3). Do not tighten
at this time. Place pump body with hopper cover into
hopper. Tilt pump forward and push toward rear of
hopper until discharge end of pump body engages
hopper outlet hole. Guide hopper rear cover under
pump drive bracket at the same time. Install suction
cup over pressure tube and connect tubing and tighten
hose clamp finger tight. Assemble liquid level indicator
by first installing "O"-ring into indicator cover and
lubricating lightly. Slide red float into adapter and inst all
indicator cover onto adapter. Place indicator into rear
hopper cover. (See Fig. 5)
On hopper and remote models: place pump body
under drive bracket. Slip top lock plate threaded shaft
into slot in pump drive bracket. Align top hole in piston
shaft with holes in drive clevis. Use drive pin to aid in
lifting and aligning piston shaft. When top hole in
piston shaft is aligned with hole in piston drive, insert
drive pin. Secure large hand nut (1) as tight as possible
with fingers. Install safety guard over pump drive and
secure with two black knobs. Interlock hopper front
cover with hopper rear cover.
The safety guard must be in place before mix
pump will operate.
On remote models: install tubing onto suction and
discharge connections on bottom of pump and pump
body. Tighten hose clamp. For ease of removal, use
(See Fig. 5)
NOTE
lubricant on hose ends prior to installing tubing. Install
tubing onto pressure relief valve connection.
IMPORTANT- Refer to paragraph 3.3 Sanitizing
Procedure prior to filling with mix.
3.8

O-RING REMOVAL AND CARE

Worn or damaged "O"-and "Quad" ring seals must be
replaced to ensure proper freezer operation. To prevent
undue damage to these seals, at least once a week be
sure to apply lubricant where required and avoid twisting
"O"-rings during assembly. Worn or damaged "O"-rings or
"O"-rings which are twisted after assembly will cause air
and/or mix leakage. Leaks will result in a low over-run
product.
To remove "O"-rings from parts for cleaning or servicing,
follow the steps below:
A. Remove all sanitary lubricant from "O"-ring using a
clean paper towel.
Figure 12. Removing "O"-Rings
B. Remove "O"-ring by squeezing upward as shown in
Figure 12. When a loop is formed, roll the "O"-ring
out of the "O"-ring groove.
DO NOT USE ANY TYPE OF SHARP OBJECT
TO REMOVE "O"-RING.
11
NOTE
CAUTION