Drive Belt Tension Adjustment; Condenser Cleaning (Air-Cooled Machines); Preventative Maintenance - Stoelting SU444 Series Operator's Manual

4.13

DRIVE BELT TENSION ADJUSTMENT

To check belt tension, follow the steps below:
A. Remove a side panel and the back panel.
WARNING
Hazardous voltage
The Clean/Off/Serve and the Main Freezer Power
Off/On switches must be placed in the OFF posi-
tion when disassembling for servicing. The freezer
must be disconnected from electrical supply before
removing any access panel. Failure to disconnect
power before servicing could result in death or
serious injury.
B. Use a Burroughs Belt Tension Gauge to set the
tension for the drive belt. Set the belt tension
on the soft serve side to 45-55 lbs. Set the belt
tension on the shake side to 35-45 lbs.
C. If an adjustment is necessary, loosen the four
motor plate retaining nuts, adjust belt tension
then retighten the four nuts.
Use
Straightedge
Figure 4-5 Pulley Alignment
D. Using a straightedge, check that the drive motor
pully is aligned with the speed reducer pulley.
Align the pulley if necessary.
Belt life will be increased if new drive belts are
tightened after two or three weeks of operation.
4.14 CONDENSER CLEANING (AIR-COOLED
MACHINES)
The condenser requires periodic cleaning. To clean the
condenser, refer to the following steps:
A. Lift the condenser fi lter off of the machine cover
panel. Visually inspect the condenser fi lter for
dirt.
B. If the condenser fi lter is dirty, vacuum or brush
it clean. Rinse it with clean water and allow it to
dry before replacing it on the machine.
C. Visually inspect the condenser for dirt by shining
a light through the coil of the condenser.
D. If the condenser is dirty, place a wet towel over
the condenser.
E. Using compressed air or a CO2 tank, blow out
the dirt from the inside of the condenser. Most of
the dirt will cling to the wet towel.
If the condenser is not kept clean, refrigeration ef-
fi ciency will be lost.
4.15

PREVENTATIVE MAINTENANCE

It is recommended that a preventative maintenance
schedule be followed to keep the machine clean and
operating properly. The following steps are suggested as
a preventative maintenance guide.
The United States Department of Agriculture and the Food
and Drug Administration require that lubricants used in
food zones be certifi ed for this use. Use lubricants only in
accordance with the manufacturer's instructions.
A. Daily checks
Check for any unusual noise or condition and
repair immediately.
B. Monthly checks
1. Check drive belts for wear and tighten belts if
necessary. (Refer to section 4.12)
2. Check the condenser fi lter for dirt. (Refer to
section 4.13).
25
NOTE
NOTE