Daikin SEHVX-BAW, Инструкция по установке и эксплуатации

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9 Maintenance and service
Installer and user reference guide
47
SERHQ020~0 SEHVX20~64BAW
Split packaged air-cooled water chiller
4P508020-1A – 2018.01
8.9 To complete the model fill-in
Complete the following fill-in for each unit:
Place of
Installation:
Model name (see
nameplate of unit):
Optional
equipment:
Date:
Signature:
Your product was
installed by:
9 Maintenance and service
NOTICE
Maintenance MUST be done by an authorized installer or
service agent.
We recommend performing maintenance at least once a
year. However, applicable legislation might require shorter
maintenance intervals.
NOTICE
In Europe, the greenhouse gas emissions of the total
refrigerant charge in the system (expressed as tonnes CO
2
equivalent) is used to determine the maintenance intervals.
Follow the applicable legislation.
Formula to calculate the greenhouse gas emissions:
GWP value of the refrigerant × Total refrigerant charge [in
kg] / 1000
9.1 Overview: Maintenance and
service
This chapter contains information about:
▪ Preventing electrical hazards when maintaining and servicing the
system
▪ Vacuuming the system
▪ The refrigerant recovery operation
▪ The yearly maintenance of the indoor unit
9.2 Maintenance safety precautions
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
NOTICE: Risk of electrostatic discharge
Before performing any maintenance or service work, touch
a metal part of the unit in order to eliminate static electricity
and to protect the PCB.
WARNING
▪ Before carrying out any maintenance or repair activity,
ALWAYS switch off the circuit breaker on the supply
panel, remove the fuses or open the protection devices
of the unit.
▪ Do NOT touch live parts for 10 minutes after the power
supply is turned off because of high voltage risk.
▪ Please note that some sections of the electric
component box are hot.
▪ Make sure you do NOT touch a conductive section.
▪ Do NOT rinse the unit. This may cause electric shocks
or fire.
9.2.1 To prevent electrical hazards
When performing service to inverter equipment:
1 Do NOT open the electrical component box cover for 10
minutes after the power supply is turned off.
2 Measure the voltage between terminals on the terminal block
for power supply with a tester and confirm that the power supply
is shut off. In addition, measure points as shown in the figure,
with a tester and confirm that the voltage of the capacitor in the
main circuit is less than 50 V DC.
A1P
A3P
A2P
TP1 TP2
3 To prevent damaging the PCB, touch a non-coated metal part
to eliminate static electricity before pulling out or plugging in
connectors.
4 Pull out junction connectors X1A, X2A (X3A, X4A) for the fan
motors in the outdoor unit before starting service operation on
the inverter equipment. Be careful not to touch the live parts. (If
a fan rotates due to strong wind, it may store electricity in the
capacitor or in the main circuit and cause electric shock.)
5 After the service is finished, plug the junction connector back in.
Otherwise the malfunction code
will be displayed on the
user interface and normal operation will not be performed.
For details refer to the wiring diagram labelled on the back of the
electrical component box cover.
9.3 About service mode operation
When the vacuuming/recovery mode is used, check very carefully
what should be vacuumed/recovered before starting.
9.3.1 To use vacuum mode
1 With the unit at a standstill and setting mode 2 active, set the
required function B (refrigerant recovery operation/vacuuming
operation) to ON (ON). Do not reset setting mode 2 until
vacuuming is finished.
Result: The H1P LED lights up. The user interface indicates
test operation and operation is prohibited.
2 Evacuate the system with a vacuum pump.
3 Press BS1 and reset setting mode 2.
9.3.2 To recover refrigerant
This should be done by a refrigerant reclaimer.