8510197P03 © Danfoss Commercial Compressors April-2007
Instructions
Contents
1 - Introduction
2 - Transportation, storage
3 - Safety measures prior to assembly
4 - Assembly
5 - Leak detection
6 - Vacuum procedure
7 - Electrical connections
8 - Filling the system
9 - Verification before commissioning
10 - Start up
11 - Troubleshooting
12 - Maintenance
13 - Replacement
14 - User advisory
1 - Introduction
These instructions pertain to Performer® her-
metic scroll compressors used for A/C purposes.
They are intended to provide necessary informa-
tion regarding safety features and proper han-
dling of this product.
Note that this is a general document for the en-
tire range of scroll compressors; certain details
therefore may not be applicable to the parti-
cular model you purchased. Please keep your
manual and all relevant information handy for
future reference.
•
Equipment description: This compressor is
delivered with all assembly equipment (rubber
mounting grommets and screws, washers,
connecting sleeves depending on models) the
electrical box and cover and Instructions.
•
Approved list of refrigerants:
· The SM/SY series can be used with R22,
· The SZ 084 to 185 series can be used with
R134a, R407C, R404A and R507A.
· The SZ 240 and 300 can be used with R134A
and R407C.
· The SZ 380 can be used with R407C.
· The SH series can be used with R410A
•
Compressors are filled with lubricant before
leaving the factory:
· The SM series with mineral oil (ref. 160P),
· The SZ and SH series with polyolester oil (ref.
160SZ),
· The SY series with polyolester oil (ref. 320SZ).
These lubricants must not be mixed with one
another.
•
Performer® Scroll compressors must only be
used for their designed purpose(s) and within
their scope of application (refer to Fig. 6).
Compressors are delivered under nitrogen
gas pressure (between 0.3 and 1 bar) and hence
cannot be connected as is; please refer to the
“Assembly”
section for further details.
Compressors are not certified for mobile and
explosion-proof applications. Any use of flam-
mable refrigerant (e.g. hydrocarbons) or air is
also strictly forbidden.
•
Under all circumstances, the EN378 (or other
applicable local regulation) requirement must
be fulfilled.
In agreement with the European directive 97/23/
EC (PED), the compressor nameplate gives the
low side maximum allowable pressure Ps and
the highest corresponding temperature Ts cal-
culated for applicable refrigerants.
When pressure tests are required on the sys-
tem, they are to be performed by qualified per-
sonnel, in paying close attention to potential
pressure-related hazards and heeding the pres-
sure limits displayed on the compressor name-
plate or in the application guidelines.
Modifications or alterations (such as brazing
on the shell) not expressly approved by the par-
ty responsible for ensuring compliance could in-
validate the user’s authorization to operate the
equipment.
2 - Transportation, storage
•
The compressor must be handled in the vertical
position (maximum offset from the vertical: 15°).
Should the compressor be handled in an upside
down position, its performance may no longer
be insured.
•
Beware that all compressor handling must be
carried out with extreme caution to avoid any
shocks. Dedicated packing handles are to be
used for all required manipulation of the com-
pressor; otherwise appropriate and safe lifting
equipment is to be used during handling and
unpacking. (Refer to Fig. 3).
•
Any damage noticed on either the packaging
or the product itself upon reception should be
indicated on a Customer Claim addressed to the
shipping company. The same recommendation
applies to all instances when transport instruc-
tions have not been fully respected.
•
Please review the safety instructions printed
on the cardboard packaging before storage.
•
Verify that the compressor is never stored in
an ambient temperature of below -35°C (-31°F)
or above the limit specified on the compressor
nameplate (Ps or Ts, whichever limit is reached
first, depending on the refrigerant used).
•
Ensure that the compressor and its packaging
are not exposed to rain and/or a corrosive,
flammable atmosphere.
3 - Safety measures prior to assembly
•
All installation and servicing is to be performed
by qualified personnel in compliance with all
pertinent practices and safety procedures.
•
The compressor must be located in a ventilated
area to ensure that the ambient temperature
never exceeds 50°C (122°F) during the off-cycle.
•
Make certain that the compressor can be
mounted on to a horizontal plane with a maxi-
mum slope of 3°.
•
Check that the compressor model corresponds
to system specifications (capacity, use of refrige-
rant, etc.).
•
Verify that the power supply corresponds to
compressor motor characteristics (refer to the
compressor nameplate for precision).
•
Ensure that the refrigerant-charging equip-
ment, vacuum pumps, etc. for HFC refrigerant
systems have been specifically reserved for the-
se refrigerants and never used with other CFC,
HCFC refrigerants.
•
Use only clean and dehydrated refrigeration
grade copper tubes as well as silver alloy brazing
material.
•
Verify that all system components are
appropriate (use of refrigerant, etc.), clean and
dehydrated before being connected to the
completed assembly.
•
Perform a check on the suction lines: Horizontal
sections are to be sloped downwards towards
the compressor. Suction gas velocity must
be high enough to provide for an adequate
oil return. This velocity must be within 8 to 12
m/s in vertical risers. In horizontal pipes, this
velocity can decrease to 4 m/s. The use of U-trap
and double suction risers may be required on
vertical sections, but not in excess of 4 m unless
a second U-trap system has been fitted (refer to
Fig. 4). Suction line piping must be insulated in
order to minimize the effects of superheating.
•
Perform a check on the discharge lines: Piping
to the condenser must be designed so as to
prevent liquid return to the compressor. The
use of non-return valves may prove necessary,
depending on the position of the compressor
with respect to the condenser. A suitably sized
U-trap may also be necessary if the condenser
has been placed above the compressor (refer to
Fig. 5).
•
The piping connected to the compressor must
be configured on the basis of a flexible 3-axis
design to dampen vibrations and designed in
such a way as to prevent free liquid refrigerant
migration and drainage back to the compressor
sump (refer to Fig. 5).
•
Note that all local and regional regulations and
safety standards, such as EN378, must be taken
into account when designing, connecting and
running the system.
4 - Assembly
The compressor’s time of exposure to the at-
mosphere during installation shall be held to a
minimum. The compressor connection must be
fast in order to avoid moisture contamination of
the lubricant.
•
The grommets must be installed under the
compressor feet, as shown in Figs. 1. Rubber
grommets are to undergo compression until
contact is made between the flat washer and the
steel-mounting sleeve.
SH 090 - 105 - 120 - 140 - 161 - 180 - 240 - 300
- 380 and SM 124 - 147 parallel assemblies requi-
res a rigid mounting of compressors onto the
rails (use the spacers delivered with the kits).
Before opening the compressor connection
fittings, it is mandatory to connect a 1/4” service
hose to the Schrader fitting on the compressor
shell in order to gradually release the nitrogen
