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Veco Frigoboat K50F - User Manual

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Frigoboat
Marine Refrigeration Systems
---------------------------------------------------------------
Installation & Instruction Manual
For All Models:
Air Cooled, Pumped-Water Cooled,
Keel Cooled, and Keel-plus-Air Cooled
(Systems using Secop (formally Danfoss) BD 35 or BD 50 compressors)
It is important to read this manual thoroughly before
installing and operating a Frigoboat system.
Veco NA
301.352.6962
info@veco-na.com
Rev 39 – 02/2019

Table of Contents

Questions and Answers

  • A
    Alyssa HaynesAug 14, 2025
    What to do if Veco Compressor attempts to start, then stops soon after?
    • V
      Vickie GomezAug 14, 2025
      If your Veco Compressor starts and then stops, consider these potential causes: * **Power Supply**: The most likely cause is a faulty or inadequate power supply. Monitor the supply voltage at the controller's power terminals before, during, and after start attempts. It should not drop below threshold levels. Check the power supply, ground connections, wiring size and charge the batteries if necessary. * **Relay or Unauthorized Component**: A faulty fan or pump relay, or an unauthorized component, could be the issue. Remove the connectors from the F and + terminals on the controller and try restarting. Note the maximum current draw on these terminals is limited to 0.7 amps at 12v. * **Refrigerant Couplings**: Check that all refrigerant couplings are properly made.
  • C
    cloveSep 2, 2025
    How to prevent excessive frost build-up in my Veco Compressor system?
    • C
      Christina WilsonSep 2, 2025
      To prevent excessive frost build-up in your Veco Compressor system, ensure that: * All drains and holes in the box are sealed. * If using a circulating fan, it's not too powerful and doesn't force cold air out of the box. * Door/lid seals are in good condition. Replace if necessary. A good seal should grip a dollar bill when closed. Apply masking tape to suspect areas after defrosting and check for frost build-up after several days to identify leaks.
  • J
    Jason TurnerNov 8, 2025
    What to do if Veco Compressor is not running and there is no start attempt?
    • Y
      Yolanda PerryNov 8, 2025
      If your Veco Compressor isn't starting, several factors could be at play: * **Voltage Issues**: Ensure the supply voltage at the controller terminals is at least 11.7v for a 12v system or 24.2v for a 24v system. Inspect the power supply, ground connections, and wiring. Charge the batteries if needed. * **Incorrect Polarity**: Verify the polarity is correct at the controller. * **Thermostat Problems**: Bypass the thermostat by bridging the “C” and “T” terminals. If it runs, replace the thermostat. Also, check the thermostat wiring and connections. * **Speed Board/Merlin II**: If installed, ensure the connectors are properly attached to the controller. Try removing the board and jumpering terminals C and T on the controller (note: this will run the compressor at its slowest speed). ...
  • E
    Emily RamirezNov 20, 2025
    Why is the box temperature too high when my Veco Compressor system runs?
    • G
      ggeorgeNov 20, 2025
      If your Veco Compressor system is running but the box temperature is too high, consider the following: * **Thermostat**: Adjust the thermostat to a higher setting. * **Speed Setting**: Ensure the speed setting is appropriate for the evaporator and its intended use (refrigerator or freezer). * **Thermostat Type**: Verify you're using the correct thermostat type (freezer thermostat for freezers, refrigerator thermostat for normal applications with Bin and Horizontal evaporators). * **Evaporator**: If the evaporator has an even coating of frost and the system isn't cycling, it might be too small. Consider replacing it with a larger model, adding insulation to the box, or relocating the evaporator lower in the box. * **Frost Build-up**: Defrost the system to remove excessive frost, ...
  • B
    Bethany HernandezNov 26, 2025
    Why is my Veco Compressor system running but the box temperature is too low?
    • S
      Scott WarrenNov 26, 2025
      If your Veco Compressor system is running, but the box temperature is too low, check the following: * **Thermostat Setting**: Adjust the thermostat to a lower setting. * **Thermostat Type**: Ensure you are using a refrigerator thermostat (white housing) for refrigerator applications and with Bin (B) and Horizontal (H) type evaporators. * **Faulty Thermostat**: If the system runs continuously with the thermostat at its lowest setting, check the thermostat connections. If the compressor stops when you remove a connection, control the system manually from the breaker until you can replace the thermostat. * **Sensor Contact**: Make sure the mechanical thermostat sensor is in good thermal contact with the evaporator at the designated location. * **Spillover System**: If using a spill...

Summary

W35 F, W50 F - Water Cooled with Pump

Mounting Requirements

Raw Water Pump

Details the installation and operation of the raw water pump for cooling.

K35 F, K50 F - Water Cooled with Keel Cooler

Mounting Considerations

Keel Cooler Installation

Provides instructions for through-hull mounting of the keel cooler.

Grounding and Bonding

Explains the importance and method of electrically grounding the keel cooler.

Danfoss;Secop Electronic Controller

Multi-speed Compressor Operation

Fault Code Explanations

Lists and explains the various fault codes generated by the controller.

LED Alarm Indicator

Describes the diagnostic LED and its blinking patterns for fault indication.

Mechanical Thermostat

Thermostat Mounting

Thermostat Operation

Explains how to set and use the mechanical thermostat for temperature control.

Quick Connect Refrigerant Fittings

Connecting Fittings

Provides step-by-step instructions for connecting the proprietary quick connect fittings.

Troubleshooting Guide

Compressor Not Running

Lists common causes and actions for a compressor that fails to start or attempt to start.

Compressor Starts and Stops

Addresses issues where the compressor starts but stops shortly after.

High Box Temperature

Provides solutions for when the system runs but the box temperature remains too high.

Low Box Temperature

Offers solutions for when the system runs but the box temperature is too low.

Excessive Frost Build-up

Veco Frigoboat K50F Specifications

General IconGeneral
TypeCompressor
ModelK50F
BrandVeco Frigoboat
RefrigerantR134a
Power50W
Voltage12/24V DC

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