4
OM-PT-W-L SERIES PREP TABLES
It is recommended that the customer contact the local Authorized Service Agent to
provide a quote to perform periodic Preventative Maintenance.
WEEKLY PM PROCEDURES
1. Clean all gaskets on a weekly if not daily basis with a solution of warm water
and a mild detergent to extend gasket life. Do not use bleach for cleaning
gaskets. Bleach will cause the gaskets to become brittle and not reach their
normal life expectancy.
MONTHLY PM PROCEDURES
1. Cleaning of all condenser coils. Condenser coils are a critical component in the
life of the compressor and must remain clean to assure proper air flow and
heat transfer. Failure to maintain this heat transfer will affect unit performance
and eventually destroy the compressor. Clean the condenser coils with coil
cleaner and/or a vacuum cleaner and brush. NOTE: Brush coil in direction of
fins, normally vertically as to not damage or restrict air from passing through
condenser.
2. Clean fan blades on the condensing unit and evaporator assembly.
3. Clean and disinfect drain lines and evaporator pan with a solution of warm
water and mild detergent.
4. Clean all gaskets on a weekly if not daily basis with a solution of warm water
and a mild detergent to extend gasket life.
5. Lubricate door hinges with lithium grease.
RECOMMENDED CLEANERS FOR YOUR STAINLESS STEEL INCLUDE THE
FOLLOWING:
JOB
CLEANING AGENT
COMMENTS
Routine cleaning
Soap, ammonia,
detergent Medallion
Apply with a sponge or
cloth
Fingerprints and smears
Arcal 20, Lac-O-Nu,
Ecoshine
Provides a barrier film
Stubborn stains and
discoloration
Cameo, Talc, Zud,
First Impression
Rub in the direction of
the polish lines
Greasy and fatty acids, blood,
burnt-on foods
Easy-Off, Degrease It,
Oven Aid
Excellent removal on all
finishes
Grease and Oil
Any good commercial
detergent
Apply with a sponge or
cloth
Restoration/Preservation
Benefit, Super Sheen
Good idea monthly
Reference: Nickel Development Institute, Diversey Lever, Savin, Ecolab, NAFEM
Proper maintenance of equipment is the ultimate necessity in preventing costly
repairs. By evaluating each unit on a regular schedule, you can often catch
and repair minor problems before they completely disable the unit and become
burdensome on your entire operation.
For more information on preventive maintenance, consult your local service
company or CFESA member. Most repair companies offer this service at very
reasonable rates to allow you the time you need to run your business along with
the peace of mind that all your equipment will last throughout its expected life.
These services often offer guarantees as well as the flexibility in scheduling or
maintenance for your convenience. For a complete listing of current Unified Brands
ASA please visit www.unifiedbrands.net.
Unified Brands believes strongly in the products it manufactures and backs those
products with one of the best warranties in the industry. We believe with the
proper maintenance and use, you will realize a profitable return on your investment
and years of satisfied service.
REPLACEMENT PARTS
To order parts, contact your Authorized Service Agent. Supply the model
designation, serial number, part description, part number, quantity, and when
applicable, voltage and phase.
CONTACT US
If you have questions pertaining to the content in this manual, contact Unified
Brands at 888-994-7636 or tsrandell@unifiedbrands.net.
TROUBLESHOOTING
This unit is designed to operate smoothly and efficiently if properly maintained.
However, the following is a list of checks to make in the event of a problem. Wir-
ing diagrams are found at the end of this manual. When in doubt, turn unit off
and contact service at 888-994-7636 or tsrandell@unifiedbrands.net.
SYMPTOM
POSSIBLE CAUSE
PROCEDURE
Unit does not run
No power to unit
Plug in unit
Control in OFF position
Turn controller on
Faulty control
Call for service at 888-994-
7636
Unit too cold
Incorrect set point
Adjust control set point
Unit too warm
Roll cover is open
Close roll cover
Gasket torn or out of place
Inspect the gasket for wear
and position
Incorrect set point
Adjust control set point
Warm product introduced
to cabinet
Pre-chill product 37ºF
Ice on the coil
Initiate manual defrost
Unit noisy
Ice on the coil
Initiate manual defrost
Unit does not defrost Excessive ice on the coil
Initiate manual defrost
CAREL CONTROLLER CODES
DISPLAYED
ALARM CODE
ALARM
E0
Control probe
E1
Defrost probe
dOr
Open door
LO
Low temperature
HI
High temperature
CHt
Dirty condenser
CLEANING CONDENSER COIL
An accumulation of dirt and dust prevents the condenser coil from removing,
making your unit cool poorly, run constantly, or even stop completely if the
compressor overheats. Clean coil using a vacuum cleaner with wand attachment.
If the coil is greasy, wash it with a solution of warm water the mild detergent using
a bristle brush. Take care not to drip water onto other parts of the condensing unit.
CLEANING DRAIN AND DRAIN PAN
Clean the drain using an oven baster to force a solution of hot water and baking
soda or bleach into the drain opening. To clear a stubborn clog, insert a length of
1/4” round plastic tubing into the drain and push it gently through to the drain
pan; pull back out. Wash the drain pan regularly with a solution of warm water
and baking soda.
CHECKING THE DOOR SEAL
Open the door and examine all four sides of the door gasket for any tears. Feel the
gasket for brittleness and/or cracks. If the gasket shows damage, then it must be
replaced. If no damage is observed, close the door and check the seal between
the gasket and the cabinet for obvious gaps. Next open the door and close it on a
dollar bill. Slowly pull the dollar bill out from the door. If the gasket seals properly,
