ICE TECH SS / SP Technical Service
Manual
25
These round wire gasket filters placed on either end of the water hose to mains, often become
blocked in the first few days of use, especially when the plumbing installation is new. Clean them
under a jet of water.
Checking for water leaks
This must be done whenever maintenance is carried out on the machine: check all water
connexions, braces, tubes and hoses in order to eliminate leaks and prevent breakages and
flooding. Check that the valve closes tightly on models with an automatic cleaning system.
8.1. Special advise concerning R-404 Refrigerant
•
R-404 is a mixture of 3 liquid-phase gases. On evaporating, the 3 component gases separate
•
Always use the liquid phase valve (at the end of condenser or accumulator) for refills and
purges.
•
When replacing a compressor, wash inside of circuit with a suitable s pump, dry with
nitrogen gas, REPLACE THE DRIER WITH ONE SUITABLE FOR R-404, which must also
have ANTI-ACID properties.
•
If you need to add oil, use one which is specific for R-404 (POE). If you are in doubt, contact
the machine manufacturer.
•
If there is a leak anywhere in the circuit where R-404 in the GAS phase, and a refill of over
10% is required, then ALL THE GAS IN THE CIRCUIT MUST BE PURGED AND THEN
REFILL AS DESCRIBED PREVIOUSPY (LIQUID PHASE VALVE)
•
When charging via low-pressure valve, do not start compressor immediately, allow about one
hour for liquid to gasify.
