Fan Coil: Safety Rules; Operating; Electronic Control - FRIGOMAR CU50VFD User Instruction

general wear. High resistance caused by corroded, bent or worn connectors results in high
resistance which causes overheating, which further amplifies the power drop. This is not only
creates conditions for a potential fire, but causes electrical equipment to work harder,
resulting in reduced life span of equipments. We recommend that you buy only the highest
quality power cord and connectors.
2. If applied to the Cupronickel condenser check the zinc anode condition at least every three
months or more frequently depending on its rate of wear. It shall be replaced as wearing is
more than 50%. If the anode metal surface is shining that means the wearing is very fast
maybe due to electrolysis problem.
3. Check seasonally that the flow switch is working properly. In every chilling unit there is a flow
switch at the fresh water inlet. As water volume decreases below 1- 0.8 m3/h the compressor
must stop within 10 s. This test has to be carried out in every chilling unit, checking that without
water flow the compressor does not start and the relevant alarm code is displayed. Should
compressor start working in this situation, stop it immediately and contact the closest
authorized Frigomar Service.
4. Clean at least once a season the Cupronickel heat exchanger on seawater side. Do not use
any chemicals that might corrode the inner pipes.

3.8 FAN COIL: SAFETY RULES

1. Do not install fan coil (air suction) in engine room or any other place where vapour
from fuel, battery, bilge and any other toxic or harmful substance could be
introduced in occupied areas.
2. Do not install fan coil in rooms where there are flammable fluids.
3. The condensate drain pipe must end in an environment free from any toxic or harmful
substance.
4. Keep the condensate drain pipe end at least 3 m away from the engines exhausts.
5. Do not install the fan coil above any electrical and electronic equipment or device,
as water could accidentally drop to it.
6. Check and clean monthly the draining system efficiency, as well as condensate pan
and pipe.
7. Check and clean monthly the air suction filters. If they are clogged also the finned
heat exchanger must be cleaned with a vacuum cleaner.
8. Make sure air flows correctly through the fan coil; fan coil's suction and discharge shall
be free from any obstructions. Any eventual obstructions may cause fan motor
overheating.

4.0 OPERATING

CAUTION! Under both heating and cooling modes of operation, certain components will run at fairly
high temperatures. Exercise care in working around operating equipment. Do not touch operating
machinery without the aid of qualified personnel.

4.1 ELECTRONIC CONTROL

The unit you have purchased has been factory tested and it has overcome the safety electrical tests
EN60204-1. Electronic control of the unit has been developed in order to obtain a product complying
with the best quality standards.
The units is equipped with an inverter drive card SSPM and control card MAIN MCU with its display
MAIN DSP, as shown in the following wiring diagrams. Seawater and circulation water pumps are
also managed through the control card. Operation control and system configuration can be
achieved from a display panel as shown in the following diagrams.
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