ESB-130-8 29
NOTICE
Risk of damage to the sight glass.
Tighten the sight glass only using the hexagon
socket screw spanner (do not use a spanner)!
Tandem
To increase the corrosion protection, it is recommen-
ded to coat the socket for the oil equalisation line (Posi-
tion 5).
Pipelines
Use only pipelines and system components which are
• clean and dry inside (free from slag, swarf, rust and
phosphate coatings)
• delivered with an air-tight seal.
Design pipelines in such a way that
• the compressor is protected from flooding with oil or
liquid refrigerant during standstill
• sufficient refrigerant injection into the evaporators is
guaranteed
• higher pressure losses are avoided
• accumulation of excessive quantities of oil in a part
of the system is not possible
• oil return at minimum load is guaranteed
• the compressor is permanently protected against
loss of oil
• the compressor is permanently protected against
penetration of liquid refrigerant or oil slugs
• the entire system remains clean and dry
Mounting the suction gas and discharge gas lines
• Suction and discharge lines must be connected
stress-free.
• Lead the discharge line downward
NOTICE
For systems with rather long pipelines or for
brazing operations without protective gas:
Install the suction-side cleaning filter (mesh size
<25μm).
NOTICE
Risk of compressor damage!
Generously sized filter dryers should be used to
ensure a high degree of dehydration and to
maintain the chemical stability of the circuit.
Make sure to choose a suitable quality (molecu-
lar sieves with specially adapted pore sizes).
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