Checking And Maintenance; General Instructions; Maintenance Operations To Be Performed; Cleaning The 400 Μm Filter - DeDietrich AWHP-2 MIT-IN-2 iSystem Installation And Service Manual

7. Checking and maintenance

7 Checking and maintenance
7.1

General instructions

7.2

Maintenance operations to be performed

7.3 Cleaning the 400 µm filter
114
CAUTION
4
4
4
Before carrying out any maintenance work requiring the
shutdown of the inside module, also cut the power supply
to the outside module to prevent any errors in
communication.
An annual inspection with sealing control is compulsory.
Schedule a service in cold periods to check the following points:
4 Thermal output by measuring the temperature difference between
the flow and the return.
4 Check the watertightness of the connections using a leak detector.
4 Check the watertightness of the water connections.
Preventive monitoring
4 Check the performance of the heat pump: Temperature control.
4 Check the water pressure in the installation.
4 Check that the filters are not obstructed.
4 Clean and dust the outdoor module.
To prevent clogging in the plate exchanger, a 400 µm filter is located
upstream of it. The filter is located in an isolating valve A.
A
Clean the filter:
4 Clean the filter during the annual service.
4 After the first hour's running on initial commissioning.
4 If the flow rate drops (See table below).
M002645-A
Maintenance operations must be done by a qualified
engineer.
An annual inspection is compulsory.
Only original spare parts must be used.
AWHP-2 MIT-IN-2 iSystem
25/06/2014 - 7616371-001-04