Disposal; Optional Items - Rivacold BLOCKSYSTEM FS series Betriebs- Und Wartungsanleitung

(every four months)
• Check that all electric terminals, both on electrical panels and terminal boards, are properly
connected; also check carefully that the all fuse elements are correctly clamped. (every four
months)
• Visually check the entire refrigerating circuit, even inside the machines, for any traces of
refrigerant leaks, which are also signalled by traces of lubricant oil. Intervene in due time and
check further in case of doubt.
Checking for refrigerant leaks:
for systems with a refrigerant charge of less than 3 kg, this check must be made annually
o
for systems with a refrigerant charge of more than 3 kg, this check must be made every six
o
months
where a leak is such that it is necessary add refrigerant for more than 10% of the total gas
o
charge, it must be repaired within 30 days of its detection.
• Check that refrigerant is flowing regularly by means of the indicator on the liquid line. (every 4
months)
• Check the oil level by means of the special indicator (if fitted) placed on the compressor
crankcase. (every 4 months)
• Carefully check the colour of the element which is sensitive to humidity through the indicator on
the liquid line. Green means dry; yellow means humidity. In the event of humidity, stop the
machine immediately, replace the filter on the liquid line and replace both the refrigerant and the
oil. Repeat this check after 3 days of operation. (every 4 months)
• Check the noise level of the compressor. This check must be performed with caution, as it has to
be carried out while the system is operating. Check for ticking or vibrations that result from
breakdowns or excessive mechanical friction between moving parts. (every 4 months)
• Check that the condensation water outlet drainage is not blocked. For MBP (medium
temperature) and LBP (low temperature) Blocksystems, make sure that the water drainage heater
is in perfect working order (specialist personnel only).
•
Important note: At the end of maintenance, replace all previously removed guards (housing and
grid).
•
Do not remove the pressure relief valve without having previously recovered the gas present
inside the liquid receiver.
12.

DISPOSAL

If the machine is placed out of service, it is necessary to disconnect it from the mains. The gas
contained inside the system must not be dispersed into the environment. The compressor oil is
subjected to differentiated waste collection regulations; therefore, we recommend that you do not
dispose of the unit as normal iron scrap but that you use a special collection centre, as per the
standards and regulations in force.
13.

OPTIONAL ITEMS

• Condenser-fan speed control
-Condenser fans pressure switch (where not fitted as standard)
Stops the condenser fan(s) when condensing pressure drops below the calibrated value, less the
differential.
-Condenser fan speed variator
To maintain condensing within set limits, the condenser fan speed must be variated according to
condensing pressure. This device must be connected to the high-pressure circuit. The instructions
for use are attached to the documentation supplied with the machine.
•
Low pressure switch
This operates by stopping the machine when the pressure in the suction circuit drops to below its
set value less the differential.. This occurs as the result of a failure.
•
Thermostatic valve expansion (where not fitted as standard)
If expansion mode is a thermostatic valve, the refrigerating system must be modified by fitting the
liquid receiver and the thermostatic valve after the condenser.
• Crankcase heater
This is used to heat up the compressor crankcase before start up and to keep it warm during
stoppage. The heat produced by the heater causes any refrigerant in a liquid state inside the
BLOCKSYSTEM FS Pag. 33 Rev. 02 02/07
UK