Stoelting O231, Руководство по обслуживанию

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4.10 CONDENSER CLEANING
The O231 has two condensers. An air-cooled or water-
cooled condenser and a condensing unit for the hopper.
The air-cooled condenser (and hopper condenser) is a
copper tube and aluminum fin type. Condensing is totally
dependent upon airflow. A plugged condenser, or restric-
tions in the louvered panel will restrict airflow. This will lower
the capacity of the system and damage the compressor.
The condenser must be kept clean of dirt and grease. The
machine must have a minimum of 3” (7.6 cm) of ventilation
at the back of the unit for free flow of air. Make sure the
machine is not pulling over 100° F (37° C) air from other
equipment in the area.
The water-cooled condenser is a tube and shell type. The
condenser needs a cool, clean supply of water to properly
cool the machine, inlet and discharge lines must be 3/8”
I.D. minimum.
The air-cooled condenser and hopper condenser require
periodic cleaning. To clean, refer to the following proce-
dures.
A. Visually inspect the condenser for dirt.
B. If the condenser is dirty, place a wet towel over the
condenser
C. Using compressed air or CO
2
tank, blow out the dirt
from the back of the condenser. Most of the dirt will
cling to the wet towel.
D. An alternative method is to clean with a
condenser brush and vacuum.
NOTE
If the condenser is not kept clean, refrigeration effi-
ciency will be lost.
4.11 PREVENTATIVE MAINTENANCE
It is recommended that a preventative maintenance sched-
ule be followed to keep the machine clean and operating
properly. The following steps are suggested as a preventa-
tive maintenance guide.
The United States department of agriculture and the food
and drug administration require that lubricants used in food
zones be certified 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
Check the condenser for dirt and clean if necessary.
C. Quarterly Checks
Check drive belts for wear and tighten belts if
necessary.
4.12 EXTENDED STORAGE
Refer to the following steps for storage of the machine over
any long period of shutdown time:
A. Clean all the parts that come in contact with mix
thoroughly with a warm detergent water. Rinse in
clear water and dry all parts. Do not sanitize.
NOTE
Do not let cleaning solution stand in the freezing
cylinder or hopper during the shutdown period.
B. Remove, disassemble, and clean the front door,
and auger shaft. Leave disassembled during the
shutdown period.
C. Place the auger flights and auger support bushing
in a plastic bag with a moist paper towel. This will
prevent them from becoming brittle if exposed to
dry air over an extended period of time (over 30
days).
D. For water-cooled machines that are left in unheated
buildings, or buildings subject to freezing, the
water must be shut off and disconnected.
Disconnect the water inlet fitting. The fitting is
located at the rear of the machine. Run the
compressor for 2 - 3 minutes to open water valve
(the front door must be attached for the compressor
to run). Blow out all water through water inlet. Drain
the water supply line coming to the machine.
Disconnect the water outlet fitting.
E. Press the Main Power On/Off button to turn the
machine off.
F. Disconnect the machine from the source of
electrical supply.