![background image](http://html1.mh-extra.com/html/costan/eptagloo/eptagloo_installation-user-and-maintenance-manual_2671008103.webp)
COSTAN TECHNICAL DOCUMENTATION
REVISION STATUS
TRUE COPY
PAGE 8 OF 5
PRODUCT:
EPTAGLOO
ORD
DATE
CHANGE ORDER
OF THE SIGNED
DATE OF 1st ISSUE
A
28.July.20090
OIL SAFETY SHEET
ORIGINAL
13/June/07
DOC. no. QSM0000406A
CHAP. No.:
090
B
23.Feb.2010
RANGE
EXTENSION
CHAPTER:
MAINTENANCE
C
11.Nov.2010
SAFETY VALVE ADDED
ISSUED BY MKT
Control of the
liquid sight glass
may indicate that the filter dryer core needs replacing. The color
of the sensitive element may vary from green to yellow according to the amount of humidity in the
circuit. Deep yellow or yellow-rose indicates that the core is unable to hold any more humidity
and must be replaced.
A strong flow resistance along the suction filters denotes that the mesh microfilter core is clogged
with residue and dirt. Cores must then be replaced.
Safety valve (Pressure relief valve)
It is advisable to replace the safety valve after it has tripped; valve discharging may cause
manufacturing residues that proceed form components and pipes to build up against the valve seal,
which may impair valve tightness after opening.
!
Safety valves must be replaced regularly as required in the instructions from the
valve’s manufacturer. They must be test-operated as established by law (e.g. Italian
DM 1/12/2004 n° 329, attachment B).
for systems in category III and V : every 3 years.
for systems in category I and II: every 4 years.
Prior to replacing the valve, make sure that the system area in which the jobs are carried out is free
from pressure and high temperature. When installing, strictly follow the instructions on the
package.
Systems including an on-board liquid receiver have a valve with a lead seal between the liquid
receiver and the safety (pressure relief) valve. This valve is open because this is how it guarantees
correct functioning of the safety device. When the pressure-relief valve is replaced the lead seal
must be broken in order for the lead-sealed valve to be closed. As soon as the new safety valve is
in place it will be necessary to open the previously lead-sealed valve back again, so restoring
normal operation conditions.
!
When these steps are accomplished it will be necessary to apply a new lead seal to the
valve to protect it from being accidentally closed and from consequently shutting the
pressure-relief valve off.
Compatibility of lubricants for motor-driven Bitzer compressors using R404A
Bitzer compressors appropriate for use with HFC refrigerants and polyester oil charge, are singled
out by letter "Y" in the model acronym (e.g. 4CC-6.2Y). The lubricant oil the Bitzer compressors
in Eptagloo systems are charged with at the time of delivery is BSE32, which is recommended for
a maximum condensation temperature of 55°C.
Before any jobs, it is advisable to check the original oil type on the compressor rating plate. When
in doubt, contact Epta’s service center.
Find below a chart listing the Bitzer-approved lube oils by other manufacturers, which have
properties similar to the BSE 32 lube oil of initial charge.
Summary of Contents for EPTAGLOO
Page 64: ......
Page 65: ......
Page 66: ......
Page 67: ......
Page 68: ......
Page 69: ......
Page 70: ......
Page 71: ......
Page 72: ......
Page 73: ......
Page 85: ......
Page 86: ......
Page 87: ......
Page 88: ......
Page 89: ......
Page 90: ......
Page 91: ......
Page 92: ......
Page 93: ......
Page 94: ......
Page 95: ......
Page 96: ......
Page 97: ......