FRIULAIR PURESTREAM CHILLERS CWE-Q 041, Use And Maintenance Manual

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7425MUM753 Model: CWE-Q - Use and Maintenance Manual Rev. 15
9
M
AINTENANCE
, I
NSPECTIONS
A
ND
P
ERIODIC
C
HECKS
To keep the machine running properly and providing the guaranteed performance
required, it is necessary to make some periodic checks.
Operation Frequency Execution
Check that the temperature of the water produced is in the
required interval
Daily
User
Check for the presence of any alarm signals Daily
Check the functioning of the fans Monthly
Check the pressure of the water circuit or fluid level into the tank
with the pump stopped.
Monthly
Check that the temperature of the air is compatible with the
operating limits of the machine
Monthly
Clean the air filters Monthly (1)
Clean the condensing coil with a jet of compressed air Yearly (1)
Clean the water strainer Monthly (2)
Specialised
personnel
Check that the refrigerant liquid sight glass is clear or, at most,
with a few bubbles (check with the compressor running)
Every 6 months
Check that the undercooling and overheating values are,
respectively between 3 and 5 K and 5 and 7 K
Every 6 months
Check for traces of oil on the pipes of the refrigerant circuit
(symptom of refrigerant leaks)
Every 6 months
Check the tightness of the electrical terminals both inside the
electrical panel and on the compressors terminals.
Yearly
Check the contacts of the contactors; if they show signs of
deterioration, replace them
Yearly
Check that the current absorbed by the machine is within the
values on the identification plate
Every 6 months
If the unit will not be used for a long time, drain the water from the
plumbings and the machine to avoid the formation of ice during
the winter (3)
Extraordinary User
(1) It may be necessary to carry this out more frequently in the case of particularly dirty environments.
(2) We recommend an extraordinary cleaning of the water strainer after the machine has been
operating for the first week.
(3) It is not necessary to do this if the system has been charged with an anti-freeze solution (water
and a suitable percentage of glycol) (see paragraph
3.4.2 Use of ethylene glycol as a winter
anti-freeze ).
Attention!
Before carrying out any maintenance on the unit or accessing internal
parts, make sure you have cut-off the electricity.
Attention! The upper part of the compressor housing and the discharge pipe are
hot. Be especially careful when working near them.