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COSTAN TECHNICAL DOCUMENTATION
REVISION STATUS
TRUE COPY
PAGE 16 OF 18
PRODUCT:
EPTAGLOO
ORD
DATE
CHANGE ORDER
OF THE SIGNED
DATE OF 1st ISSUE
A
18.Dec.2008
UPDATE
ORIGINAL
13/June/07
DOC. no. QSM0000406A
CHAP. No.:
040
B
28.July.2009
UPDATE
C
CHAPTER:
INSTALLATION
C
23.Feb.2010
RANGE
EXTENSION
D
11.Nov..2010
SAFETY VALVE ADDED
ISSUED BY MKT
•
Compressor protecting pressure switch HP side: when pressure rises in an individual
compressor then this pressure switch trips, which shuts down the power supply to that
compressor and stops it immediately.
!
Jobs requiring the electrical board to be live and open may be carried out only by
qualified and expert personnel. When the electrical board is open and energized, this
is visually signaled by an alarm/danger red intermittent light. The person in charge
of these jobs must absolutely not leave the equipment when the safety devices
provided by the manufacturer are disabled.
Check rotation of the remote condenser fans (the fans must expel air from the condenser battery).
Then, if necessary, correct high pressure switch settings.
Top up with refrigerant through the suction line following the instructions above and modulating
the amount of refrigerant.
Check the oil level in the oil reservoir and in each compressor (while the compressor is off).
The oil level in the float regulator must reach 3/8 of the viewer, whereas in the oil reservoir it
must be at the upper viewer after the system has run for a couple of days. If this is not the
case, top up the initial charge until the required levels are reached, strictly following the
above instructions.
Do not add oil unless the oil level has dropped below the lower viewer’s mid-
line.
After a certain operation time (about 12 hours), or when a remarkable increase in leaks
through the suction filters is detected, stop the plant. Shut both filters off and replace the
filtering cartridges: place a mechanical filtering core (Castel 4495/C) in the suction filter and
a dryer core (Castel 4490/C) in the liquid line filter using the supplies. Empty the pipe
stretches involved and then restart the system. Check the oil level in the compressors and in
the oil reservoir again.
The oil level in the reservoir must never reach below the lower viewer.
NOTE:
If the oil reservoir should be replaced in a system that has already been commissioned,
add oil very carefully. Top up again only after the system has worked for a whole day (which is
enough for oil to get back to the oil reservoir). If the oil level does not reach the upper viewer, add
the necessary amount. Conversely, if the oil level should exceed the upper viewer, it is
indispensable to empty the excess through the bottom valve
1
.
OVERCURRENT CIRCUIT BREAKERS
I.D. SETTING
QM1
Current rating for compressor #1 (In)
QM2
Current rating for compressor #2 (In)
QM3
Current rating for compressor #3 (In)
QM4
Current rating for compressor #4 (In)
1
As stated in Carly literature 13.3 (6/95)
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