Instructions
© Danfoss | DCS (CC) | 2018.08 | 9
FRCC.PI.059.A1.02
performed, repetitive failure may occur. Note
that an oil acidity test always proves helpful in-
diagnosis when undertaking compressor repla-
cement.
• Check that the replacement component has
the same electrical and refrigeration perfor-
mance characteristics as the original one.
• Whenever piping needs to be modified, please
refer to the
«Safety measures prior to assem-
bly»
section.
• For further details on replacement steps,refer
to the previous sections of this manual.
Note:
In the event of compressor motor failure,
flush and clean the entire circuit before replacing
the compressor in order to remove acids and conta-
minants. Systematically install a new filter dryer
on the liquid line. Prior to this step (if necessary),
run the system for at least 2 hours with anti-acid
cartridges (in such instances, the installation of a
suction filter might also be required). After an ope-
rating period of approximately 2 weeks, check the
level of oil acidity. If the oil acid test proves positive,
drain and replace the oil, replace the anti-acid li-
quid line filter dryer cartridges and the suction filter
previously installed. Repeat oil and filter dryer re-
placements until the system is clean and acid-free.
When there is no longer any sign of acidity, replace
the anti-acid cartridges by the standard model and
remove the suction strainer cartridge as required
.
14 - User advisory
Insist that all service operations only be per-
formed by qualified personnel.
The condensing unit tubing and compressor
surface temperatures may exceed 100°C (212°F)
and cause severe bodily burns. Special precau-
tion must be taken when working around the
compressor and refrigerant tubing. Moreover, a
compressor in operation can generate very cold
surface temperatures (as low as -45°C / -49°F),
there by exposing personnel to the risk of free-
zing burns.
Pressure inside the compressor and refrige-
rant circuit can reach dangerously high levels
(e.g. abnormal operation, fire,…) leading to
personnel injury if suddenly released; therefore,
never drill, weld or cut the compressor shell and
adjacent tubing (release of liquid refrigerant can
cause flash freezing on exposed skin).
Even though fans are fitted with safety guard
it is recommended not to work on condenser
while fans are running.
Be aware that the product warranty may be
deemed null and void in the following cases:
• Modifications to the unit, unless approved by
Danfoss Commercial Compressors, absence
of nameplate, broken or dented components,
shock marks, etc...
• Compressor opened by the customer or re-
turned unsealed (i.e. open discharge or suction
ports),
• Presence of rust or water inside the condensing
unit circuit,
• Addition of leak-detection fluid in the compres-
sor lubricant,
• Use of a refrigerant or lubricant not approved
by Danfoss Commercial Compressors.,
• Any deviation from recommended instructions-
pertaining to installation, application or mainte-
nance,
• Use in mobile applications (boats, trains, truc-
ks,etc.) or under explosive atmospheric conditions.
The date of production of the condensing unit
is indicated on the nameplate. Ensure that the
model and serial number information is always
transmitted with any claim filed regarding this
product.
