Danfoss Optyma Slim Pack OP-LSQM Instructions page 3

Instructions
Picture 2
1 – Introduction
These instructions pertain to Optyma
Pack condensing units OP-LSHM/MSHM/MSGM/
LSQM/MSXM/MSYM/MSBM (R448A,
R452A, R407A, R407F, R507, R404A, R134a,
R513A) used for refrigeration systems. They pro-
vide necessary information regarding safety and
proper usage of this product.
The condensing unit includes following:
• Scroll/reciprocating compressor
• Microchannel heat exchanger
• Dual pressure switches
• Service valves Suction/ liquid
• Weather proof housing
• Filter drier
• Cranckcase heater for compressor
• Receiver with stop valve
• Sight glass
• Phase sequence relay (scroll compressors)
• Fully pre-wired electrical panel (including main
switch, compressors contactor, overload relay)
• Fan speed controller and External main switch
(W09 only)
2 – Handling and storage
• It is recommended not to open the packaging
before the unit is at the final place for installation.
• Handle the unit with care. The packaging al-
lows for the use of a forklift or pallet jack. Use
appropriate and safe lifting equipment.
• Store and transport the unit in an upright position.
• Store the unit between -35°C and 50°C.
• Don't expose the packaging to rain or corrosive
atmosphere.
• After unpacking, check that the unit is com-
plete and undamaged.
3 – Installation precautions
Do not braze as long the condensing unit is
under pressure.
Never place the unit in a flammable atmosphere
Place the unit in such a way that it is not blocking
or hindering walking areas, doors, windows or similar.
• Ensure adequate space around the unit for air
circulation and to open doors. Refer to picture1
for minimal values of distance to walls.
• Avoid installing the unit in locations which are daily
exposed to direct sunshine for longer periods.
• Avoid installing the unit in aggressive and dus-
ty environments.
• Ensure a foundation with horizontal surface
(less than 3° slope), strong and stable enough
to carry the entire unit weight and to eliminate
vibrations and interference.
• The unit ambient temperature may not exceed
50°C during off-cycle.
© Danfoss | DCS (CC) | 2020.06
Picture 3
Mounting bolts
• Ensure that the power supply corresponds to
Slim the unit characteristics (see nameplate).
TM
• When installing units for HFC or HFO refrige-
R449A, rants, use equipment specifically reserved for
HFC or HFO refrigerants which was never used
for CFC or HCFC refrigerants.
• Use clean and dehydrated refrigeration-grade
copper tubes and silver alloy brazing material.
• Use clean and dehydrated system components.
• The suction piping connected to the compres-
sor must be flexible in 3 dimensions to dampen
vibrations. Furthermore piping has to be done
in such a way that oil return for the compres-
sor is ensured and the risk of liquid slug over in
compressor is eliminated.
4 – Installation
• The installation in which the condensing unit is
installed must comply to EEC Pressure directive
(PED) no. 97/23/EC. The condensing unit itself
is not a "unit" in the scope this directive.
• The unit must be securely installed on a stable
and rigid support, and fixed from the begin-
ning. See picture 2.
• It is recommended to install the unit on rub-
ber grommets or vibration dampers (not sup-
plied).
• Slowly release the nitrogen holding charge
through the schrader port.
• Connect the unit to the system as soon as pos-
sible to avoid oil contamination from ambient
moisture.
• Avoid material entering into the system while
cutting tubes. Never drill holes where burrs
cannot be removed.
• Braze with great care using state-of-the-art tech-
nique and vent piping with nitrogen gas flow.
• Connect the required safety and control de-
vices. When the schrader port is used for this,
remove the internal valve.
• It is recommended to insulate the suction pipe
up to the compressor inlet with 19 mm thick
insulation.
5 – Leak detection
Never pressurize the circuit with oxygen or
dry air. This could cause fire or explosion.
• Do not use dye for leak detection.
• Perform a leak detection test on the complete
system.
• The maximum test pressure is 31*
• When a leak is discovered, repair the leak and
repeat the leak detection.
* 25 bar for OP-.......AJ.... & OP-.......FH.... models
)
Schrader valve
6 – Vacuum dehydration
• Never use the compressor to evacuate the system.
• Connect a vacuum pump to both the LP & HP
• Pull down the system under a vacuum of 500
• Do not use a megohmmeter nor apply power
7 – Electrical connections
• Switch off and isolate the main power supply.
• Ensure that power supply can not be switched
• All electrical components must be selected as
• Refer to wiring diagram for electrical connec-
• Ensure that the power supply corresponds
• Dimension the power supply cables according
• Protect the power supply and ensure correct
• Make the power supply according to local stan-
• The unit is equipped with high and low pressure
For units with a 3-phase scroll compressor, cor-
rect phase sequence for compressor rotation
direction shall be observed.
• Determine the phase sequence by using a
• Connect line phases L1, L2 and L3 to main swit-
Fusible Plug is not available in unit, it is
replaced with adapter plug.
bar.
)
Unit has liquid receiver with an Adapter Plug
with 3/8" NPT connection. installer/end user can
select various options as mentioned in EN378-2 :
2016 Article § 6.2.2.3
• The unit/installation into which the condensing
118A0549C - AN23308644013405-001401 | 3
Anticlockwise (open)
Clockwise (Close)
sides.
μm Hg (0.67 mbar) absolute.
to the compressor while it is under vacuum as
this may cause internal damage.
on during installation.
per local standards and unit requirements.
tions details.
to the unit characteristics and that the power
supply is stable (nominal voltage ±10% and
nominal frequency ±2,5 Hz).
to unit data for voltage and current.
earthing.
dards and legal requirements.
switches, which directly cut the power sup-
ply to the compressor and provides 230V a.c.
alarm signals (max. 50VA) in case of activation.
Parameters for high and low pressure cut outs
should be set by installer considering compres-
sor model, refrigerant and application. Units
with Danfoss MLZ and LLZ compressors are also
equipped with phase sequence relay to protect
the unit against phase loss/sequence/ asym-
metry and under-/over-voltage.
phase meter in order to establish the phase
orders of line phases L1, L2 and L3.
ch terminals T1, T2 and T3 respectively.
8 – Safety
unit is mounted/integrated, must be in