Vollrath STOELTING O431RC, Operator'S Manual

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3.14 MIX PUMP CLEANING
NOTICE
Any cleaning procedure must always be followed by
sanitizing before filling machine with mix. (Refer to
section 3.3)
The mix pump is approved for CIP (clean in place). It is
thoroughly cleaned when the detergent solution is pumped
through the machine. We recommend completely disas-
sembling the pump and disconnecting tubing every 14
days for inspection of parts to confirm the CIP has been
properly performed. If any residue is detected, clean or
replace those parts as outlined below.
A. Place the Main Power OFF/ON and Freezing
Cylinder OFF/ON switches in the ON position and
press the CLEAN button. Allow the auger to
agitate for 5 to 10 minutes.
B. Remove the suction tube from the mix container.
Open the spigot to remove the mix remaining in
the freezing cylinder.
C. Pump 2 gallons (7.5 liters) of potable water through
machine until the water coming out of the spigot
is clear.
D. Pump 2 gallons (7.5 liters) of 90° to 110°F (32°C
to 43°C) detergent solution through the machine.
The use of soft water is recommended, along with
dishwashing detergents such as “Joy”, “Dawn”, or
equivalent.
E. Place the mix pump switch in the OFF position.
Open the spigot to relieve the remaining pressure.
F. Press the CLEAN button to stop the auger and
place the Main Power OFF/ON and Freezing
Cylinder OFF/ON switches in the OFF position.
3.15 DISASSEMBLY AND INSPECTION OF
REMOVABLE PARTS
Inspection of removable parts should be made whenever
maintenance is performed or when the pump requires
disassembly.
NOTE
If the mix line or air line is difficult to remove, soften
the tubing with a rag soaked in hot water. Hose con-
nections may be sprayed with Haynes Sanitary Lu-
bricant for ease of removal.
WARNING
Hazardous Moving Parts
Revolving pump head can grab, mangle, and cause
serious crushing injury. The Main Power Off/On
switch must be placed in the OFF position for clean-
ing and power must be disconnected when disas-
sembling or servicing.
CAUTION
System Under Pressure
Never disconnect hoses from the machine or the
pump without first opening the spigot to relieve pres-
sure.
A. Loosen the clamp and remove the air hose from
the pump compressor.
B. Loosen the clamp and disconnect the mix pump
hose. Remove the pickup hose, the mix check
valve and the pickup hose adapter (and bag
adapter if applicable) as an assembly from the
mix container.
C. Completely disassemble the hose assembly and
the check valve (Fig. 3-10). Place hoses, tee,
check valve assembly, and pickup hose adapter
in 90° to 110°F (32°C to 43°C) mild detergent
water and wash thoroughly. Use soft bristle
brushes to clean inside of fittings. Rinse all parts
in clean 90° to 110°F (32°C to 43°C) water.
D. Carefully inspect each part for wear or damage.
Replace worn or damaged parts.
E. Wash the feed tube and the air tube in the cabinet
with 90° to 110°F detergent water and brushes
provided. Rinse with clean, 90° to 110°F water.
F. Prepare two gallons (7.5 liters) of sanitizing solution
using a USDA certified grade sanitizing solution.
Sanitize all removed parts. Allow them to air dry.
G. Check the Hose Service Record decal to determine
if a hose reposition or a hose replacement is
required.
H. Reassemble both hose assemblies per the
diagram located on the inside of the cab door.
Reconnect the assemblies to the pump hose and
the discharge hose, using the clamps. (Refer to
Section 2.5 Mix Pump).
I. Sanitize assembled machine as per instructions
outlined in Section 3.9.
Figure 3-10 Mix Pump Removable Parts