GOVI Refrigeration

How to Use Your Polar King Mobile GOVI Refrigeration Unit

Martin Smazenko Polar King Mobile, Trailers

How to Use Your Polar King Mobile GOVI Refrigeration Unit. If you’re in the business of transportation, catering, or event management, you know the importance of preserving perishable goods while on the move. In this blog, we will cover the ins and outs of using a Polar King Mobile Refrigerated Trailer. From understanding its remarkable features to mastering the art of temperature control, we’ll equip you with the knowledge to keep your products fresher for longer, and your events running smoother than ever before.

Let’s dive in and explore how the Polar King Mobile Refrigerated Trailer can elevate your business to new heights, ensuring your goods remain chilled, no matter the distance or destination.

GOVI Refrigeration

  1. Main Cover
  2. Evaporator (with Refrigerant in the System)
  3. Protection Cover
  4. Air Intake (Do Not Obstruct)
  5. Air Outlet (Do Not Obstruct)
GOVI Refrigeration

Main Cover (1)

The main cover (1) covers the outer parts of the refrigeration unit.

Evaporator (2)

A liquid gas is used inside the pipes of the refrigerating unit. Refrigerants usually need special attention in handling. This refrigeration unit works with a hermetic piping system. Under normal conditions, there is no need to recharge refrigerant. Some States may have statutory provisions and regulations for disposal of refrigerants. Make sure you know and follow these statutory provisions and regulations when changing or disposing of refrigerants.

Protection Cover and Target Temperature

The protection cover (3) is a cover that opens like a window. The lid window shields the control unit from harsh weather and impedes unintended changes of the settings. You need a turn spanner (included in delivery) to open the lid.

The target temperature is the desired temperature inside the cargo box. You can adjust the target temperature by following the below instructions.

Air Intake (4)

Do not obstruct air intake!

Air Outlet (5)

Do not obstruct air outlet!

GOVI Refrigeration

GOVI Refrigeration Operating Elements

  1. Display

The display serves to choose and to show the nominal temperature.

  • ON / OFF

The ON / OFF switch (2) enables users to switch on and off the refrigeration unit.

  • Control (SET) Switch

Setting Nominal Temperature.

  • UP / Defrost

To increase the temperature/manual defrost

  • DOWN/Light

To lower the temperature / enable to switch the light on / off.


You shall immediately unplug the refrigeration unit at the power supply if you detect smoke, unusual smells, or strange noises around the refrigeration unit.

Call for service before operating the refrigeration unit again.


Ensure adequate air circulation for the refrigeration unit during the operation process. Do not obstruct the air intake on the bottom of the refrigeration unit or the air outlet on the left side.

Always choose a safe and horizontal parking position for the refrigerated trailer. Allow adequate space for tree branches and alike.


During operation, you should check regularly for ice building up on the evaporator inside the cargo box. Icing may inhibit normal operation to a point that the refrigeration unit cannot cool down the cargo box to the set temperature.

There is risk of property damage.

In case of icing, immediately take out all and any perishable merchandise from the cargo box and move it to an appropriate environment. Then start the defrost procedure according to the maintenance instructions. This will clear the evaporator from icing and restore normal operating conditions.

Polar King Mobile

GOVI Refrigeration Operating Procedures

  1. Display
  2. ON/OFF Switch
  3. SET Switch
  4. Spanner (Included)
  5. Latch

Switching the refrigeration unit On/Off

  1. Use spanner (4) to unlock the latch (5). Press the button ON/OFF to activate the trailer refrigeration unit.

Setting Target Temperature (Set Point)

  1. Use spanner (4) to unlock the latch (5).
  2. Open the protection cover.
  3. Switch on the refrigeration unit by pressing the ON/OFF button.
  4. Press SET once. The display (1) shows “SET” to indicate the change into Set-Mode. This allows you to change the target temperature inside the carrier.
  5. Press SET again. The display (1) now shows the current setting of the target temperature.
  6. 6. Adjust the target temperature by pressing UP for a higher temperature or DOWN for a lower temperature. The value changes in steps of 0, 1° when you press less than 1 second. When you press and hold the button, the value increases or decreases as long as you press or until the maximum of 50°F or minimum of 0° is reached.
  7. Confirm your desired temperature by pressing SET again. You hereby save and apply the new target temperature setting and leave the Set-Mode. The display (1) shows the current temperature inside the carrier.  

About Polar King Mobile

Polar King Mobile was founded in 2020 to provide North America with its first affordable, small, refrigerated trailer solution. The company’s refrigerated and freezer trailers, engineered specifically for outdoor and over-the-road use, feature a 100% seamless fiberglass design with a continuous surface. Polar King Mobile trailers are used by single-unit operators, chain restaurants, schools, health care facilities, government agencies, and many others requiring dependable outdoor refrigeration. For more information, visit or call (866) 586-2051. Polar King Mobile is located at 4410 New Haven Ave Suite A, Fort Wayne, IN 46803 USA.