Technical data

Table Of Contents
FILLING THE REFRIGERANT CIRCUIT
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11.9 FITTING AND REMOVING THE LINEAR EXPANSION
VALVE
The linear expansion valve LEV ( Fig. 74, Page 78) comprises two
components, i.e. the valve body and the electric drive. The electric drive
can be replaced separately from the valve body.
REMOVING THE ELECTRIC DRIVE
Hold valve body [2] tightly and remove the electric drive [1] upwards.
Fig. 75 Removing the electric drive
Undo the drive terminal on the PCB.
FITTING THE ELECTRIC DRIVE
Hold valve body [2] tightly and fit the electric drive on top so that the
guide tabs [1] click into the recesses in the valve body.
Fig. 76 Fitting the electric drive
Ensure that the electric drive is correctly locked in place and sits
tightly.
Route cables free of stress and connect the terminal with the PCB.
11.10 REMOVING THE TRANSFORMER (ACL)
At the Outdoor Unit (ODU):
Remove the service panel.
Remove the top panel.
Remove the front panel.
Remove the back panel.
Remove the four reactor fixing screws and remove the reactor.
Replace the items in the reverse order.
12 FILLING THE REFRIGERANT CIRCUIT
The refrigerant circuit is pre-charged with 2.5 kg of R410A refrigerant.
This amount is adequate for a pipe run of between 0.5 and 30 m in both
directions. Refrigerant only needs to be topped up if refrigerant was
discharged during maintenance work.
Observe the following information if the refrigerant circuit needs to be
refilled:
Only qualified and authorised refrigeration engineers may work on the
refrigerant circuit.
Use only the specified refrigerant (R410A) to charge the refrigerant
lines.
Never allow air to remain in the lines.
After completing service, charge the refrigerant circuit with specified
amount of refrigerant.
Never use a charging cylinder. If a charging cylinder is used, the
composition of the refrigerant will change and the efficiency will be
lowered.
When fitting or removing the electric drive always ensure
that you hold the valve body tightly to prevent damage to
the refrigerant lines.
Never use force to remove the electric drive. If the
electric drive is difficult to remove, move it lightly to and
fro until it can be removed easily.
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Never wind the control and power cables around the
valve body.
The transformer is in the Outdoor Unit and attached to
the rear of the electrical parts box.
CAUTION: Damage from unsuitable refrigerant!
Fill the system exclusively with R410A refrigerant.
Never mix R410A refrigerant with other refrigerants.
Never add lubricant to the system.
Never use a charging cylinder. If a charging cylinder is
used, the composition of the refrigerant will change
and the efficiency will be lowered.