Stoelting F431 - Manual (Page 32)

22
D. If an adjustment is necessary, remove the side panel.
Turn the jack screw located on the motor bracket,
clockwise to increase belt tension or counterclock
wise to decrease belt tension.
4.4 MIX PUMP HOSE REPOSITION (every one or
two weeks.)
NOTE
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.
NOTE
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
NOTE
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. See Section 2.5 for
instructions on mix pump hose replacement.
4.6 DRIVE BELT TENSION ADJUSTMENT
To check belt tension, refer to Figure 30 and follow the
steps below:
WARNING
Hazardous Voltage and Moving Parts
Never attempt to repair or perform any maintenance
on freezer until all main electrical power to freezer
has been disconnected. Failure to disconnect
electrical power before servicing may result in
serious injury or death.
A. Remove either side and back panels.
B. Press firmly on one belt. Figure 30.
C. When the tension is properly adjusted, the belt
should deflect approximately 3/8" (about the width
of the belt).
D. The overrun setting is indicated by a pointed pin.
E. To adjust overrun, loosen the allenhead screw
(located within the center of the adjustment knob)
with the 5/32" (4mm) allen wrench provided. Rotate
the adjustment knob counterclockwise to a higher
number for higher overrun, or clockwise to a lower
number for lower overrun. Each number multiplied by
10 represents the overrun percentage (ie: #4 = 40%
overrun).
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.
Figure 30. Belt Adjustment