2. WEKA Guard
2.1 General
In the shipment a device will be included (free of charge) which protects the Boxcooler
from being damaged by welding currents. Welding with Boxcoolers in place must be
performed using the most modern and best available professional welding and grounding
methods.
This device (WEKA Guard) must be connected to the tube-sheet and to the ship’s hull
during the newbuilding process of the ship when the ship-based electrical supply is not yet
available. If not installed, the Boxcooler may suffer severe corrosion due to the welding
currents. Once the ship is completed and due for delivery, the WEKA Guard shall be
replaced by the WEKA Protector, which from this moment on takes over the protection of
the Boxcooler.
2.2 Installation
One WEKA Guard is normally supplied for each Boxcooler.
The WEKA Guard consists of a small box with two wires, a blue and a red one.
The WEKA Guard needs no additional power supply.
The blue cable is connected to the ship’s ground.
The red cable is connected to the tube-sheet of the Boxcooler.
In appendix A, a connection diagram is found for the WEKA
Guard unit.
2.3 Placement of the WEKA Guard
The WEKA Guard shall be placed in a safe area of the ship, in order not to be
damaged during ship’s construction.
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