8510197P02-C © Danfoss Commercial Compressors May-2006
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 - In���������n
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These instructions pertain to Performer® hermetic
scroll compressors used for A/C purposes. They are
intended to provide necessary information regarding
safety features and proper handling of this product.
Note that this is a general document for the entire
range of scroll compressors; certain details there-
fore may not be applicable to the particular 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 explo-
sion-proof applications. Any use of flammable refrige-
rant (e.g. hydrocarbons) or air is also strictly forbidden.
•
Under all circumstances, the EN378 (or other appli-
cable 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 calculated
for applicable refrigerants.
When pressure tests are required on the system,
they are to be performed by qualified personnel,
in paying close attention to potential pressure-
related hazards and heeding the pressure limits
displayed on the compressor nameplate or in the
application guidelines.
Modifications or alterations (such as brazing on
the shell) not expressly approved by the party res-
ponsible for ensuring compliance could invalidate
the user’s authorization to operate the equipment.
2 - T�ansp���a���n, s���age
•
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 na-
meplate (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 - Safe�y meas��es p���� �� assembly
•
All installation and servicing is to be performed
by qualified personnel in compliance with all per-
tinent 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 maximum slope of 3°.
•
Check that the compressor model corresponds to
system specifications (capacity, use of refrigerant, etc.).
•
Verify that the power supply corresponds to
compressor motor characteristics (refer to the
compressor nameplate for precision).
•
Ensure that the refrigerant-charging equipment,
vacuum pumps, etc. for HFC refrigerant systems
have been specifically reserved for these 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 atmos-
phere 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 and 2. Rub-
ber grommets are to undergo compression until
contact is made between the flat washer and the
steel-mounting sleeve.
SH 090 -120 - 161 - 180 - 240 - 300 parallel assem-
blies requires a rigid mounting of compressors onto
the rails (use the spacers delivered with the kits).
Before opening the compressor connection fit-
tings, 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 holding charge.
•
Ensure that no material enters into the system
while cutting the tubing. Moreover, never drill
holes in the pipe work after installation.
•
Should additional components need to be
connected on to the compressor sight glass or oil
equalization ports, it is recommended that such an
operation be carried out prior to final assembly, to
allow for compressor inclination and movement.
•
Avoid flare-type connections and exercise great
care while brazing (use only state-of-the-art
practices); apply a nitrogen gas flow to prevent
oxidation inside the tubing, especially when HFC
refrigerants are being used. All brazing material is
to contain a minimum of 5% silver.
•
When brazing, protect the terminal box and painted
surfaces of the compressor from torch heat damage.
Summary of Contents for Performer S084
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