Viking VUWC Installation Instructions - Page 18

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Maintenance Listed below are common refrigeration components with a brief description of the normal operating sounds they make. NOTE: Your product may not contain all the components listed. • Compressor: The compressor makes a hum or pulsing sound that may be heard when it operates. • Evaporator: Refrigerant flowing through an evaporator may sound like boiling liquid. • Condenser Fan: Air moving through a condenser may be heard. • Automatic Defrost Drain Pan: Water may be heard dripping or running into the drain pan when the unit is in the defrost cycle. CHECKING PRODUCT TEMPERATURE TROUBLESHOOTING GUIDE ! DANGER ELECTROCUTION HAZARD. Never attempt to repair or perform maintenance on the unit before disconnecting the main electrical power. Troubleshooting - What to check when problems occur: Problem Interior Light Does Not Illuminate Light Remains on When Door Is Closed. Unit Develops Frost on Internal Surfaces. Possible Cause and Remedy If the unit is cooling, it may be in Sabbath mode. Turn off light switch if equipped. Adjust light actuator bracket on bottom of door. Ensure the door is closing and sealing properly. Unit Develops The unit is exposed to excessive humidity. Condensation on Moisture will dissipate as humidity levels External Surfaces. decrease. Product is Not Cold Enough Air temperature does not indicate product temperature. See CHECKING PRODUCT TEMPERATURE below. Adjust the temperature to a cooler set point. Ensure unit is not located in excessive ambient temperatures or in direct sunlight. Ensure the door is closing and sealing properly. Ensure the interior light has not remained on too long. Ensure nothing is blocking the front grille, found at the bottom of the unit. Ensure the condenser coil is clean and free of any dirt or lint build-up. To check the actual product temperature in the unit: 1. Partially fill a plastic (nonbreakable) bottle with water. 2. Insert an accurate thermometer. 3. Tighten the bottle cap securely. 4. Place the bottle in the desired area for 24 hours. 5. Avoid opening the unit during the testing period. 6. After 24 hours, check the temperature of the water. If required, adjust the temperature control in a small increment (see CONTROL OPERATION). Causes which affect the internal temperatures of the cabinet include: • Temperature setting. • Ambient temperature where installed. • Installation in direct sunlight or near a heat source. • The number of door openings and the time the door is open. • The time the internal light is illuminated. (This mainly affects product on the top rack or shelf.) • Obstruction of front grille or condenser. 18

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18
Maintenance
Listed below are common refrigeration components with a
brief description of the normal operating sounds they
make. NOTE: Your product may not contain all the
components listed.
•
Compressor: The compressor makes a hum or pulsing sound
that may be heard when it operates.
•
Evaporator: Refrigerant flowing through an evaporator may
sound like boiling liquid.
•
Condenser Fan: Air moving through a condenser may be
heard.
•
Automatic Defrost Drain Pan: Water may be heard dripping
or running into the drain pan when the unit is in the defrost
cycle.
TROUBLESHOOTING GUIDE
ELECTROCUTION HAZARD.
Never attempt to repair or perform
maintenance on the unit before disconnecting the main electrical
power.
Troubleshooting - What to check when problems occur:
DANGER
!
Problem
Possible Cause and Remedy
Interior Light
Does Not
Illuminate
If the unit is cooling, it may be in Sabbath
mode.
Light Remains
on When Door Is
Closed.
Turn off
light switch if equipped.
Adjust light actuator bracket on bottom of
door.
Unit Develops
Frost on Internal
Surfaces.
Ensure the door is closing and sealing
properly.
Unit Develops
Condensation on
External Surfaces.
The unit is exposed to excessive humidity.
Moisture will dissipate as humidity levels
decrease.
Product is Not
Cold Enough
Air temperature does not indicate product
temperature. See CHECKING PRODUCT
TEMPERATURE below.
Adjust the temperature to a cooler set
point.
Ensure unit is not located in excessive
ambient temperatures or in direct sunlight.
Ensure the door is closing and sealing
properly.
Ensure the interior light has not remained
on too long.
Ensure nothing is blocking the front grille,
found at the bottom of the unit.
Ensure the condenser coil is clean and free
of any dirt or lint build-up.
CHECKING PRODUCT TEMPERATURE
To check the actual product temperature in the unit:
1.
Partially fill a plastic (nonbreakable) bottle with water.
2.
Insert an accurate thermometer.
3.
Tighten the bottle cap securely.
4.
Place the bottle in the desired area for 24 hours.
5.
Avoid opening the unit during the testing period.
6.
After 24 hours, check the temperature of the water. If required,
adjust the temperature control in a small increment (see
CONTROL OPERATION).
Causes which affect the internal temperatures of the
cabinet include:
•
Temperature setting.
•
Ambient temperature where installed.
•
Installation in direct sunlight or near a heat source.
•
The number of door openings and the time the door is open.
•
The time the internal light is illuminated. (This mainly affects
product on the top rack or shelf.)
•
Obstruction of front grille or condenser.