Dometic ColdMachine 54 Montage- Und Bedienungsanleitung Seite 23

Coldmachine
I
NOTE
Always use two open-ended spanners to prevent both couplings in the
coupling holder from turning.
Tools required:
• Open-ended spanner: Width 21 for tightening the coupling
• Open-ended spanner: Width 19 and 16 for holding the counter-cou-
pling in place
A
NOTICE!
If you do not hold the counter-coupling in place when tightening
the coupling or do not tighten it further by 90°, coolant will leak
unnoticeably and eventually lead to system failure.
In such cases, the complete cooling unit must be disassembled,
returned, the one-way couplings replaced and the device refilled at the
factory.
➤ Place the coupling halves by hand on top without tension and tighten them by
hand (fig. g, page 8).
➤ Use open-ended spanner to tighten couplings so that a gap of 2–3 mm is given
between the coupling halves (fig. h, page 8).
Do not yet fully tighten the coupling. The coupling only has rubber seals to
prevent the loss of coolant. They do not provide long-term protection against
leakage.
➤ Tighten the previously-tightened union nuts for the female coupling halves using
an open-ended spanner to a torque of 30 Nm by approx. a further 90°, to
connect both couplings firmly with each other.
This step is necessary to ensure final, metallic and long-term, absolute gas tight-
ness is given, as the cutting ring of the male coupling half has cut into the face of
the female half.
!
WARNING!
The coolant in the system is under pressure.
Wear safety goggles and gloves when disconnecting.
If the device must be decoupled for return shipping, make sure to screw the caps
back onto the coupling halves to prevent dirt and moisture from entering the
refrigerant circuit.
EN
Installing the cooling unit
23