Bedienungsanleitung REMKO ML 681 (Seite 23 von 28) (Englisch)

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Add refrigerant

The equipment contains a basic

quantity of refrigerant. Extra

refrigerant must be added if the

basic length of the refrigerant

pipes exceeds 5 metres. Refer to

the following table:

261

351

521

681

Basic pipe

length

Additional ﬁll quantity

Up to and

incl.

5 m

0 g/m

5 m to max.

25 m

g/m

After the tightness check has

been successfully completed,

connect the vacuum pump via

the pressure gauge station to

the valve connections on the

outdoor component (see chapter

"Tightness check") and create a

vacuum.

Perform the following checks

prior to commissioning the

unit for the ﬁrst time and after

any interventions affecting the

refrigerant circuit. Record the

results in the commissioning

report:

■

Check all refrigerant pipes and

valves using leak detection

spray or soapy water to ensure

they are tight and that the

suction and injection pipes

are not accidentally mixed up.

Perform this check when the

unit is not running .

■

Check the refrigerant pipes and

insulation for signs of damage.

■

Check the electrical connections

between the indoor unit and

outdoor component to verify

the correct polarity.

■

Check that all fastenings,

mountings etc. are ﬁrm and at

the correct level.

Before

commissioning

Note that the employed

refrigerant is always ﬁlled in

liquid form!

CAUTION

NOTE

Check the overheating to

determine the refrigerant ﬁll

quantity

Wear protective clothing when

handling refrigerant.

CAUTION

Commissioning

Commissioning should only be

performed and documented

by specially trained personnel.

NOTE

The system can be commissioned

once all the components have

been connected and tested.

A functional check should be

performed to verify its correct

function and identify any unusual

operational behaviour prior to

handing it over to the operator.

Functional checks and

test run

Check the following points:

■

Tightness of the refrigerant

pipes.

■

Compressor and fan running

smoothly.

■

In cooling mode, cold air should

be output by the indoor unit,

and warm air should be output

by the outdoor component.

■

Functional test of the indoor

unit and all program sequences.

■

Check the surface temperature

of the suction pipe and

determine the overheating

of the vaporiser. Measure

the temperature by holding

a thermometer against the

suction pipe and subtracting

the boiling point temperature

indicated on the pressure

gauge.

■

Record the measured

temperatures in the

commissioning report.

Check that the stop valves

and valve caps are tight after

carrying out any work on the

refrigerant circuit. If necessary,

use appropriate sealant

products.

NOTE

Functional test for cooling

and heating modes

1. Remove the protective caps on

the valves.

2. Start the commissioning

procedure by brieﬂy opening

the stop valves on the outdoor

component until the pressure

gauge indicates a pressure of

approx. 2 bar.

3. Use leak detection spray or

suitable devices to check that all

the connections are tight.

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REMKO ML 681 Seite 23

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