Preventive Maintenance; Interval; Maintenance; Preventive - Dantherm DFC 350 Service Manual

Preventive maintenance

Introduction
Caution!
Service function
"Timer"

Interval

Condition for war-
ranty
Leaving the site
Recommended ap-
proach
22
The unit needs preventive maintenance with specific intervals to avoid breakdown or
inefficient operation. It is important to notice that interval between maintenance can
vary depending on the specific environment.
Switch off both the DC and AC supply before working on the unit!
Make sure that all work has been performed before switching on the power again.
The control unit has a service function to ensure better indoor climate for 20 minutes
during the presence of service technicians. To activate the service function, push one
step up from the main menu to find "Timer". Now press "Enter". The control unit will
now count down from 20 minutes and after that go back to normal operation.
Dantherm Air Handling AB recommends that intervals between preventive maintenance
do not exceed 1 year. It is also our recommendation that the site and unit is examined
closely during the first preventive maintenance to determine whether the interval is too
long. We recommend that preventive maintenance visits are carried out during spring.
The factory warranty is only valid if documented preventive maintenance has been car-
ried out with an interval of maximum 1 year. The documentation should be in form of a
written log.
Before leaving the site, make sure there are no alarms!
Follow these steps to carry out preventive maintenance on the unit:
Step
1 Make sure that the power to the unit is safely switched off.
2 Remove the worn-out filter and clean the unit carefully.
3 Clean the dampers with regards to function and tightness.
4 Clean the fan and check that the mounting is OK.
5 Check and clean the air intake and exhaust accessories.
6 Insert the new filter carefully into the unit.
7 Close the unit and make sure that the service is completed correctly.
8 Turn on the power to the unit.
9 Run the Self test according to the separate manual for the controller.
Action