Stoelting U421/U444 - Manual (Page 32)

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CAUTION
UTION
Never disconnect hoses from freezer or pump with-
out first opening spigot to relieve pressure.
3. Disconnect mix pump hose at each end.
4. Grasp the discharge hose end with one hand
and turn the pump on. Pull down on the hose
until all of the remaining hose is removed from
the pump.
5. Connect new mix pump hose to pick-up hose
adapter, using small clamp.
6. Insert free end of hose into the pick-up (suction
side) hose side of the black cover. Gently push
the hose into the black cover until it begins to
self-feed. Allow the hose to feed itself through
the pump until the pick-up hose adapter pre-
vents further feeding, then turn the pump off.
7. Reconnect mix pump hose to T using small
clamp. Pump is now ready to sanitize.
4.6 CAB TEMPERATURE ADJUSTMENT
A temperature control is used to control cab temperature.
To change the temperature, follow the steps below:
A. Remove the six screws holding the left side panel
and remove panel.
B. Use a small screwdriver to adjust the temperature
control. Turn counterclockwise for a warmer tem-
perature and clockwise for a colder temperature. It
will take about an hour for the cab temperature to
change. Figure 28.
C. Install side panel and secure with the six retaining
screws.
Figure 29. Temperature Control Cab
4.7 DRIVE BELT TENSION ADJUSTMENT
To check belt tension, refer to Figure 29 and follow the
steps below:
F. Tighten the allen screw, then place the wrench back
in its clip. Replace the lower back panel and secure
with the four screws. Turn the mix pump power switch
to the ON position.
4.4. MIX PUMP HOSE REPOSITION (every one or
two weeks.)
NOTICE
Mix pump hose must be repositioned every 1 - 2
weeks. Failure to comply will result in reduced mix
pump liquid capacity, dispense stoppage, popping,
and possible mix pump hose leakage.
1. Run cleaning solution through pump.
2. Turn pump off and relieve any pressure by
opening the spigot.
3. Grasp the pick-up hose end of the mix pump
hose with one hand and turn the pump on. Pull
down on the pick-up hose end until 12 to 14"
(30-1/2 to 35-1/2cm) of tubing has reverse fed
through the pump, then turn the pump off.
4. Loosen small clamp at the pick-up hose
adapter and (Viewed from Back) disconnect
mix pump hose.
5. Cut 7-1/2" (19 cm) off the end of the mix pump
hose.
6. Reconnect mix pump hose to adapter.
7. Continue normal operation. Mix hose will
automatically reposition itself with adapter near
black cover.
NOTICE
Each hose is long enough for 3 repositions before
replacement is required. Record each event on
Hose Service Record decal.
4.5 MIX PUMP HOSE REPLACEMENT
NOTICE
Mix pump hose must be replaced when tubing can-
not be further repositioned (every four to eight
weeks). Failure to comply will result in hose failure
and possible pump damage.
1. Run cleaning solution through pump.
2. Turn pump off and relieve any pressure by
opening the spigot.
WARNING
The Mix pump switch must be in the "Off" position
when servicing or cleaning pumps.
WARNING
Disconnect electrical supply to freezer before ser-
vicing.