Marco FRIIA 1000860 Series, Service Manual

Page: 12 / 46

FRIIA Service manual Page 12
4.3.2
CHECK FOR CO
2
PRESSURE
:
Review pressure CO2 gauges for proper settings.
Replacing a carbon dioxide (CO2) cylinder
When the needle of the reducer high pressure gauge is in the red segment,
the cylinder needs replacing:
1. Note down the pressure values set on the pressure reducer, then fully close
the bottle using its valve.
2. Remove the pressure reducer (or disconnect the high pressure hose from
the bottle, if fitted). Check the condition of the gaskets between the reducer
and the bottle, replacing them if necessary.
3. Replace the CO2 cylinder, slowly open the valve to its fully open position,
and check that the pressure values are as originally set.
DANGER
ELECTRICAL MAINS
Always isolate chiller from power supply before doing any work on it, to prevent damage and
health hazards.
4.3.3 CLEANING THE CHILLER CONDENSER:
Check the chiller condenser at regular time intervals, in accordance to
environmental conditions (humidity and dust).
If dust or dirt accumulates between the condenser blades, remove screws,
plastic clips and the removable upper panel and clean condenser fins using a
soft brush, a vacuum cleaner or low-pressure compressed air.
Remove any dust from the cooling and electrical components.
Accumulation of dust and grease over the condenser may cause overheating, and this in turn
could damage the compressor beyond repair.
The condenser must always be cleaned when necessary.
Do not use wire brushes and compressed air jets because they can damage condenser fins.