Overview: Maintenance And Service - Daikin VAM350J7VEB Installer And User Reference Manual

10 Hand-over to the user
Once the test run is finished and the unit operates properly, please
make sure the following is clear for the user:
▪ Make sure that the user has the printed documentation and ask
him/her to keep it for future reference. Inform the user that he can
find the complete documentation on the url as earlier described in
this manual.
▪ Explain the user how to properly operate the system and what to
do in case of problems.
▪ Show the user what to do in relation to maintaining the unit.
▪ Explain the user about energy saving tips as described in the
operation manual.
11 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
We recommend to clean at least once every 2 years (for
general office use). If necessary, shorter maintenance
intervals might be required.
CAUTION
Before accessing, make sure to turn off the operation
switch and disconnect the power.
CAUTION
During operation, NEVER check or clean the unit. It may
cause electrical shock. Do NOT touch the rotating parts, it
will cause injury.
11.1 Overview: Maintenance and
service
This chapter contains information about:
▪ Preventing electrical hazards when maintaining and servicing the
system
▪ The maintenance of the heat reclaim ventilation unit.
11.2 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.
11.2.1 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.
VAM350~2000J7VEB
Heat reclaim ventilation unit
4P487293-1 – 2017.08
10 Hand-over to the user
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.
VAM350~650
C–
C–
C+
C+
A2P
VAM800~2000
C–
C–
C+
C+
A1P
For details refer to the wiring diagram labelled on the outside of the
service cover.
11.3 Checklist for maintenance of the
heat reclaim ventilation unit
▪ Check the following at least once a year: Air filters.
The air filters can get blocked due to dust, dirt, leaves, etc. It is
recommended to clean the air filters yearly. A blocked air filter can
lead to too high pressure leading to worse performance. See
" Maintenance of the air filter" on
▪ Check the following at least once every 2 years: Heat exchange
element.
The heat exchange element can get blocked due to dust, dirt, etc.
It is recommended to clean the heat exchange element once
every 2 years. A blocked heat exchange element can lead to too
high pressure leading to worse performance. See
of the heat exchange element" on
12 Troubleshooting
12.1 Overview: Troubleshooting
This chapter describes what you have to do in case of problems.
It contains information about solving problems based on error codes.
Before troubleshooting
Carry out a thorough visual inspection of the unit and look for
obvious defects such as loose connections or defective wiring.
page 42.
" Maintenance
page 43.
Installer and user reference guide
39