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Instructions

6 | © Danfoss | DCS (CC) | 2018.07

FRCC.PI.059.A1.02

Contents

 

1 - Introduction

 

2 - Transportation, storage

 

3 - Safety measures prior to assembly

 

4 - Assembly

 

5 - Leak detection

 

6 - Vacuum dehydration 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 Optyma

 Blue 

condensing units used for refrigeration purposes. 
They are intended to provide necessary informa-
tion regarding safety features and proper handling 
of this product.

Note that this is a general document for the en-
tire range of condensing units; certain details 
therefore may not be applicable to the particular 
model you purchased. Please keep your manual 
and all relevant information handy for future re-
ference.

• Equipment description: condensing units are 
available under different configurations. They 
incorporate a compressor and a fan-cooled 
condenser mounted on a base frame. In addi-
tion, they may include a liquid receiver, a pres-
sure switch, a connecting box and service valves.

• Approved list of refrigerants:
  - The MCRN and MGRN product line (fitted 
with Maneurop® MTZ compressors) can be used 
with R404A, R507, R134a, R407C, R407A, R452A, 
R448A, R449A.
  - The LCQN and LGQN product line (fitted with 
Maneurop® NTZ compressors) can be used with 
R404A, R452A and R507A.

• Note that Maneurop® compressors are filled 
with lubricant before leaving the factory:
  - The MTZ series with polyolester oil (ref. 175PZ),
  - The NTZ series with polyolester oil (ref. 175Z).
These lubricants must not be mixed with one another.

• Condensing units must only be used for their 
designed purpose(s) and within their scope of 
application (refer to Fig. 1a,1b).

 Condensing units are delivered under ni-

trogen gas pressure (between 1 and 2 bar) and 
hence cannot be connected as it is; please refer 
to the

 «Assembly» 

section for further details. 

 Condensing units are not certified for mobile 

and explosion-proof applications. Any use of 
flammable refrigerant (e.g. hydrocarbons) or air 
is also strictly forbidden.

• Under all circumstances, the EN 378-2:2016 (or other 
applicable local regulation) requirement must be ful-
filled.

 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 to the compres-

sor or receiver (such as brazing on the shell) not 
expressly approved by the party responsible for 
ensuring compliance could invalidate the user’s 
authorization to operate the equipment.

2 - Transportation, storage

• The condensing unit must be handled in the 
vertical position (maximum offset from the 
vertical: 15°). Should the unit be handled in an 
upside-down position, its performance may no 
longer be insured.

• Beware that all condensing unit handling must 
be carried out with extreme caution to avoid any 
shocks. Appropriate and safe lifting equipment 
is to be used during handling and unpacking.  Be 
careful with the condenser’s front surface (note 
that the condenser side is indicated on the pac-
kaging).

• 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 condensing unit is never stored 
in an ambient temperature of below -35°C 
(-31°F) or above 50°C (122°F).

• Ensure that the condensing unit and its packa-
ging 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 condensing unit must be located in a 
well-ventilated area; air flow through unit shall 
not be restricted in any way (refer to Fig.2). Make 
sure that the ambient temperature never ex-
ceeds 50°C (122°F) during the off-cycle.

• For outdoor installations, provide a shelter or 
use a Danfoss condensing unit housing.

• Make certain that the condensing unit can be 
mounted onto a horizontal plane with a maxi-
mum slope of 3°.

• Check that the condensing unit model corres-
ponds to system specifications (capacity, use of 
refrigerant, etc.).

• Verify that the power supply corresponds to 
compressor and fan motor characteristics (refer 
to the condensing unit nameplate for precision).

• Ensure that the refrigerant charging equip-
ment, 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 refrigera-
tiongrade copper tubes as well as silver alloy 
brazing material.

• Verify that all system components are appro-
priate (use of refrigerant, etc.), clean and dehy-
drated before being connected to the comple-
ted 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 re-
turn.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 ver-
tical sections, but not in excess of 4 m unless a 
second U-trap system has been fitted (refer to 
Fig. 3).
Suction line piping must be insulated in order to
minimize the effects of superheating. 

• The piping connected to the compressor must 
be configured on the basis of a flexible 3-axis de-
sign to dampen vibrations and designed in such 
a way as to prevent free liquid refrigerant migra-
tion and drainage back to the compressor sump.

 When installing a liquid receiver or any other 

pressure-containing component on the conden-
sing unit, be sure that these components com-
ply with the PED 2014/68/EU.

 Make sure the installation is equipped with 

high-pressure safety components (e.g. pressure 
switch, pressure relief valve) to prevent against the 
bursting of pressure-containing components.

• Note that all local and regional regulations and 
safety standards, such as EN 378-2:2016, must be 
taken into account when designing, connecting 
and running the system.

4 - Assembly

 The condensing unit’s time of exposure to the 

atmosphere during installation shall be held to 
a minimum. The condensing unit is fitted with 
suction and liquid copper stubs equipped with 
shut-off valves to enable connection to the cir-
cuit without ingress of air or moisture in the unit.

Opening the shut-off valves before connection 
will cause moisture contamination of the com-
pressor lubricant.

• Silent block must be installed under the 
condensing unit base frame, as shown in Fig 
4, to prevent vibration interference from other 
operating equipment or machinery and to re-
duce vibration transmission to the supporting 
structure.

 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 
holding charge.

• Ensure that no material enters into the system 
while cutting the tubing. Moreover, never drill 
holes in the pipe work after installation.

Содержание Optyma OP-LCQN048

Страница 1: ... MTZ050 MTZ056 MTZ064 MTZ072 MTZ080 836 5 1200 800 OP MGRN108 OP MGRN121 OP MGRN136 MTZ064 MTZ072 MTZ080 693 5 1500 870 OP MGRN171 OP MGRN215 OP MGRN242 OP MGRN271 MTZ100 MTZ125 MTZ144 MTZ160 836 5 1500 870 LBP application 50 Hz Compressor H W D OP LCQN048 NTZ048 545 630 650 OP LCQN068 NTZ068 705 900 900 OP LCQN096 OP LCQN108 OP LCQN136 NTZ096 NTZ108 NTZ136 836 5 1200 800 OP LGQN096 OP LGQN108 OP ...

Страница 2: ...0 Evaporating Temperature C R407C Ambient Temperature C 35 0 10 20 30 40 50 30 25 20 15 10 5 0 5 10 15 Evaporating Temperature C R452A Ambient Temperature C 35 0 10 20 30 40 50 30 25 20 15 10 5 0 5 10 15 Evaporating Temperature C R407F Ambient Temperature C 0 10 20 30 40 50 30 25 20 15 10 5 0 5 10 15 20 Evaporating Temperature C R134a Ambient Temperature C SH 10 K SC 0 K MBP Fig 1a 45 0 10 20 30 4...

Страница 3: ...Instructions Danfoss DCS CC 2018 07 3 FRCC PI 059 A1 02 1 x coil height Min clearance 2 x unit length Fig 2 Fig 3 Fig 4 ...

Страница 4: ...Instructions 4 Danfoss DCS CC 2018 07 FRCC PI 059 A1 02 SINGLE PHASE MODELS THREE PHASE MODELS ...

Страница 5: ...Instructions Danfoss DCS CC 2018 07 5 FRCC PI 059 A1 02 For R404A models Factory setting HP bar MBP 28 8 LBP 28 3 LP bar ...

Страница 6: ... stored in an ambient temperature of below 35 C 31 F or above 50 C 122 F Ensure that the condensing unit and its packa ging 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 condensing unit must be located in...

Страница 7: ...tent with system volume Never use the compressor as a vacuum pump It is recommended to use large diameter connec tion lines and to connect these lines to the shut off valves rather than to the Schrader connec tion This recommendation allows avoiding excessive pressure losses Moisture level At the time of commissioning system moisture content may be as high as 100 ppm During ope ration the liquid l...

Страница 8: ...s fan opera tions water flow water filter etc liquid refrige rant flow and pressure drops solenoid valve filter dryer expansion valve etc refrigerant charge Low refrigerant charge the correct refrige rant charge is given by the liquid sight glass indication the condenser delta T in relation to the refrigerant pressure tables pressure tempe rature the superheat and the sub cooling etc if additional...

Страница 9: ...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 th...

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