ThermoKey DFX Serie Manual De Instrucciones página 7

ThermoKey Heat Exchange Solutions
TC 6.7
In environments with multiple units no alternating defrosting cycles should be carried out, in order to avoid the
abnormal formation of frost on the heat exchangers.
TC 6.8
Check that the power line is compliant with the requirements of the unit shown on the technical data label.
TC 6.9
Before connecting the unit, verify the presence of disconnecting and breaking devices on the power supply line,
protection against electric shock, protection of equipment and any other device required by law. Standard models
are supplied with junction boxes for the supply of fanmotors and with junction boxes for the supply of the heating
elements in models with electric defrosting.
TC 6.10
If speed controls are used for the fanmotors, check their compatibility. Non-compliant devices may generate noise and
damage the fanmotors. The manufacturer does not guarantee the indicated performance of units equipped with speed
controllers.
TC 6.11
Verify that the line of the refrigerant is adequate for the performance of the unit. When connecting the cooling circuit,
do not deform the capillaries and do not change the position of the distributor or the manifolds in general.
TC 6.12
Verify that the operating condition limits (humidity, temperature and pressure) meet the specific requirements of the
product selection.
TC 6.13
For units with electrical defrosting and, depending on the type of cold room, correctly define the time and the number of
defrosting cycles. The defrosting cycle must be controlled with a chrono-thermostat and the temperature probes should
not stop the defrosting cycle prematurely but only prevent overheating. The probes must be placed in the coldest parts
of the heat exchanger (where there is the greatest frost formation) and at a distance from the heating elements.
TC 6.14
Make sure that at the end of each defrosting cycle (electric, hot gas or warm glycol), the finned pack, the internal
drip tray and the drain dischargers are clean. If necessary, correct the timing and the number of the defrosting cycles.
Accumulations of frost tend to turn into harmful ice accumulations that may cause malfunctioning or the failure of
the heat exchanger.
TC 6.15
Install the appropriate siphons on the drain discharge line and verify their effectiveness at all operating temperatures.
In low temperature rooms functioning below the freezing point, the external moisture entering from the discharge
line, if not provided with siphons, generates harmful ice accumulations.
TC 6.16
Access to the installed unit, for any type of intervention, should be reserved to experienced personnel specifically trained to
run the system, in compliance with current regulations.
11 MT TC A DF EN 04 2017
c) e d)
e)
a)
fig.2 – Fixing sequence:
a) Remove the top of the wooden cage.
b) Possible easy installation sequence only for standard models with up to maximum two fanmotors, remove also the sides
and the ends of the wooden cage.
c) Lift and position.
d) Fix the unit to all appropriate points (see chapter dimensions) with adequate anchors in accordance with the total
weight (net weight of the unit, weight of the refrigerant, weight of any ice accumulation on the heat exchanger, weight of
any accumulation in the drip trays).
e) Remove the wooden cage and the transport brackets.
f ) Remove the bottom of the wooden cage and the transport brackets.
MT TC A DF EN 04 2017
Technical Manual TC Instruction and technical data
c) e d)
f)
a) e b)
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