Danfoss Optyma OP-LPQE Series User manual

Installation and servicing of the conden-
sing units by qualified personnel only.
Follow these instructions and sound refri-
geration engineering practice relating to
installation, commissioning, maintenance
and service.
The condensing unit must only be used for
its designed purpose(s) and within its scope of
application.
Under all circumstances, the EN378 (or
other applicable local safety regulation)
requirements must be fulfilled.
The condensing unit is delivered under nitro-
gen gas pressure (1 bar) and hence it cannot
be connected as it is; refer to the «installation»
section for further details.
The condensing unit must be handled with cau-
tion in the vertical position (maximum offset
from the vertical : 15°)
MADE IN INDIA
OP-MPVE034MLW04E
Application
Refrigerant
M.W.P. HP
114X7039
MBP
(1) R404A, R507, R22,
R448A, R449A, R452A
(1) 28 bar
LP (1) 7 bar
IP54
(2) R134a, R513A
(2) 23 bar
(2) 5 bar
Voltage 380-400V3N~/50Hz
LRA
OIL INSIDE POE 46
30.5 A 7.5 AMCC
Serial No.
EAN No.
Danfoss A/S, 6430 Nordborg, Denmark
Barcode Serial No:
123456CG0514
XXXXXXXXXXX
118UXXXX
A
B
C
D
E
F
G
A: Model
B: Code number
C: Application, Protection
D: Refrigerant
E: Housing Service Pressure
F: Supply voltage, Locked Rotor Ampere,
Maximum Current Consumption
G: Serial Number and bar code
* For exact values please refer name plate in unit
Name plate
L
M
NO
L
[mm]
M
[mm]
N
[mm]
O
[mm]
250 650 550 550
Picture 1 : Minimum mounting distances
Designation system for the Optyma™ Slim Pack range
OP-MPVE 034 ML W10 E
1 2 3 4 5 6 7 8
1 Application
M = MBP
L = LBP
2 Package
P = Packaged unit
3 Refrigerant
V= R22/R134a/R513A/R404A/R448A/R449A/R452A
M= R22
Q = R404A/R507/R452A
4 Condenser
E: Extreme and tropical ambient conditions up to 48°C
5 Swept volume
Swept volume in CC
6 Compressor platform
ML = MLZ (Scroll)
MT = MT (Reciprocating)
NT = NTZ (Reciprocating)
LL = LLZ (Scroll)
7 Version
See version control table - W02, W04, W08 and W10
8 Voltage code
G = Compressor 230V/1N~/50Hz, fan 230V/1~/50Hz
E = Compressor 400V/3N~/50Hz, fan 230V/1~/50Hz
W02 W04 W08 W10
Service valves 
Low Pressure cartridge 
Receiver 
Filter drier 
Sight Glass 
Solenoid Valve 
Cranckase Heater (Only for LBP models)  
Full Ebox 
Fan speed controller 
Dual Pressure switch KP 
HP alarm provision 
LP alarm Provision 
Discharge gas thermostat provision 
7. Version control
Instructions
Optyma™ Slim Pack
OP-LPQE/MPVE/MPME
© Danfoss | DCS (CC) | 2020.06 118A0665C - AN238286441930en-001401 | 1
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1 – Introduction
These instructions pertain to OptymaTM Slim
Pack condensing units OP-LPQE/MPVE/MPME
(R22, R404A, R507, R134a, R513A, R448A, R449A,
R452A) used for refrigeration systems. They
provide 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 (IP 54)
•Filter drier
•Receiver with stop valve
•Sight glass
•Solenoid valve
•Phase sequence relay *)
•Fully pre-wired electrical panel (including main
switch, compressors contactor, overload relay)
•Crankcase heater (OP-LPQE units in W04 and
W10 only)*)
Fan speed controller (W10 only)
*)Refer version control for components details in
all versions
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
allows 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
complete 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
dusty 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.
•Ensure that the power supply corresponds to
the unit characteristics (see nameplate).
•When installing units for HFC refrigerants,
use equipment specifically reserved for HFC
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
compressor must be flexible in 3 dimensions
to dampen vibrations. Furthermore piping has
to be done in such a way that oil return for the
compressor 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. 2014/68/EU. The condensing unit itself
is not a ”unit” in the scope this directive. Under all
circumstances local safety regulations must be
fulfilled.
•The unit must be securely installed on a
stable and rigid support, and fixed from the
beginning. See picture 2.
•It is recommended to install the unit on
rubber grommets or vibration dampers .
Rubber pads with mounting bolts are supplied.
•Slowly release the nitrogen holding charge
through the schrader port.
• Connect the unit to the system as soon as possible
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
technique and vent piping with nitrogen gas flow.
•Connect the required safety and control
devices.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 bar.
•When a leak is discovered, repair the leak and
repeat the leak detection.
6 – Vacuum dehydration
•Never use the compressor to evacuate the system.
•Connect a vacuum pump to both the LP & HP
sides.
•Pull down the system under a vacuum of 500
μm Hg (0.67 mbar) absolute.
•Do not use a megohmmeter nor apply power
to the compressor while it is under vacuum as
this may cause internal damage.
7 – Electrical connections
•Switch off and isolate the main power supply.
•Ensure that power supply can not be switched
on during installation.
•All electrical components must be selected as
per local standards and unit requirements.
•Refer to wiring diagram for electrical
connections details.
•Ensure that the power supply corresponds
to the unit characteristics and that the power
supply is stable (nominal voltage ±10% and
nominal frequency ±2,5 Hz).
•Dimension the power supply cables according
to unit data for voltage and current.
•Protect the power supply and ensure correct
earthing.
•Make the power supply according to local
standards and legal requirements.
•
The unit is equipped with high and low pressure
switches, which directly cut the power supply
to the compressor and provides 230V a.c. alarm
signals (max.50VA) in case of activation. Version
W04 is also equipped with phase sequence relay
to protect the unit against phase loss/sequence/
asymmetry and under-/over-voltage.
For units with a 3-phase scroll compressor,
correct phase sequence for compressor rotation
direction shall be observed.
•Determine the phase sequence by using a
phase meter in order to establish the phase
orders of line phases L1, L2 and L3.
•Connect line phases L1, L2 and L3 to main
switch terminals T1, T2 and T3 respectively.
DGT protection is required if the high and
low pressure switch settings do not protect
the compressor against operations beyond its
specific application envelope. Please refer to
the examples below, which illustrate where DGT
protection is required (n°1) and where it is not
(n°2).
The compressor must not be allowed to cycle
on the discharge gas thermostat. Continuous
operations beyond the compressor’s operating
range will cause serious damage to the
compressor!
Discharge line
Thermostat
Bracket Insulation
A DGT accessory is available from Danfoss: refer
to section “Spare parts & accessories”.
8 – Safety
Fusible Plug is not available in unit, it is
replaced with adapter plug.
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
Picture 2 Mounting bolts
Picture 3
Anticlockwise (open)
Clockwise (Close)
Schrader valve
Instructions
2 | AN238286441930en-001401 - 118A0665C © Danfoss | DCS (CC) | 2020.06

condensing unit is mounted/integrated, must
be in accordance with the PED.
•Beware of hot and extremely cold components.
•Beware of moving components. Power supply
should be disconnected while servicing.
9 – Filling the system
•Wear protective stuff like goggles and protective
gloves.
•Never start the compressor under vacuum. Keep
the compressor switched off.
•Before charging the refrigerant, verify that the oil
level is between ¼ and ¾ on the compressor oil
sight glass. If additional oil is required please refer
to the compressors label for type of oil.
•Use only the refrigerant for which the unit is
designed for.
•Fill the refrigerant in liquid phase into the
condenser or liquid receiver. Ensure a slow
charging of the system to 4 – 5 bar for R404A /
R507, R22, R452A or R448A/R449A and approx. 2
bar for R134a and R513A.
•Do not put liquid refrigerant through suction line.
•It is not allowed to mix additives with the oil
and/or refrigerant
•The remaining charge is done until the
installation has reached a level of stable nominal
condition during operation.
•Never leave the filling cylinder connected to the
circuit.
10 – Verification before commissioning
Use safety devices in compliance with both
generally and locally applicable regulations and
safety standards.
• Verify that all electrical connections are properly
fastened and in compliance with local regulations.
•When a crankcase heater is required, it must be
energized at least 12 hours before initial start-up
and start-up after prolonged shut-down period.
11 – Start-up
•Never start the unit when no refrigerant is
charged.
•All service valves must be in the open position.
See picture 3.
•Check compliance between unit and power
supply.
•Check that the crankcase heater is working.
•Check that the fan can rotate freely.
•Check that the protection sheet has been
removed from the backside of condenser.
•Balance the High Pressure / Low Pressure.
•Energize the unit. It must start promptly. If
the compressor does not start, check wiring
conformity, voltage on terminals and sequence
phase.
•Eventual reverse rotation of a 3-phase
compressor can be detected by following
phenomena; unit doesn’t start, the compressor
doesn’t build up pressure, it has abnormally
high sound level and abnormally low power
consumption. In such case, shut down the unit
immediately and connect the phases to their
proper terminals.
•If the rotation direction is correct the low
pressure indication on the low pressure gauge
shall show a declining pressure and the high
pressure indication on the high pressure gauge
shall show an increasing pressure.
12 – Check with running unit
•Check the fan rotation direction. Air must flow
from the condenser towards the fan.
•Check current draw and voltage.
•Check suction superheat to reduce risk of
slugging.
•When a sight glass is provided observe the oil
level at start and during operation to confirm
that the oil level remains visible.
•Respect the operating limits.
•Check all tubes for abnormal vibration.
Movements in excess of 1.5 mm require
corrective measures such as tube brackets.
•When needed, additional refrigerant in liquid
phase may be added in the low-pressure side
as far away as possible from the compressor.
The compressor must be operating during this
process.
•Do not overcharge the system.
•Never release refrigerant to atmosphere.
•Before leaving the installation site, carry out
a general installation inspection regarding
cleanliness, noise and leak detection.
•Record type and amount of refrigerant charge
as well as operating conditions as a reference for
future inspections.
13 – Maintenance
Always switch off the unit at main switch
before remove fan panel.
Internal pressure and surface temperature are
dangerous and may cause permanent injury.
Maintenance operators and installers require
appropriate skills and tools. Tubing temperature
may exceed 100°C and can cause severe burns.
Ensure that periodic service inspections to
ensure system reliability and as required by local
regulations are performed.
To prevent system related problems, following
Periodic maintenance is recommended:
•Verify that safety devices are operational and
properly set.
•Ensure that the system is leak tight.
•Check the compressor current draw.
•Confirm that the system is operating in a way
consistent with previous maintenance records
and ambient conditions.
•Check that all electrical connections are still
adequately fastened.
•Keep the unit clean and verify the absence of
rust and oxidation on the unit components,
tubes and electrical connections.
The condenser must be checked at least once
a year for clogging and be cleaned if deemed
necessary. Access to the internal side of the
condenser takes place through the fan panel.
Microchannel coils tend to accumulate dirt on
the surface rather than inside, which makes them
easier to clean than fin-&-tube coils.
•Switch off the unit at main switch before remove
any panel from the condensing unit.
•Remove surface dirt, leaves, fibres, etc. with
a vacuum cleaner, equipped with a brush or
other soft attachment. Alternatively, blow
compressed air through the coil from the inside
out, and brush with a soft bristle. Do not use a
wire brush. Do not impact or scrape the coil with
the vacuum tube or air nozzle.
If the refrigerant system has been opened, the
system has to be flushed with dry air or nitrogen
to remove moisture and a new filter drier has to
be installed. If evacuation of refrigerant has to
be done, it shall be done in such a way that no
refrigerant can escape to the environment.
14 - Warranty
Always transmit the model number and serial
number with any claim filed regarding this product.
The product warranty may be void in following
cases:
•Absence of nameplate.
•External modifications; in particular, drilling,
welding, broken feet and shock marks.
•Compressor opened or returned unsealed.
•Rust, water or leak detection dye inside the
compressor.
•Use of a refrigerant or lubricant not approved by
Danfoss.
•Any deviation from recommended instructions
pertaining to installation, application or
maintenance.
•Use in mobile applications.
•Use in explosive atmospheric environment.
•No model number or serial number transmitted
with the warranty claim.
15 – Disposal
Danfoss recommends that condensing
units and oil should be recycled by a
suitable company at its site.
16 - Fan speed controller setting for R134a/R513A refrigerant
FSC type Fan speed Controller
Spare part number
Refrigerant
letter For Refrigerant Factory setting Action required
XGE-4C
061H3140 Q R404A/R452A/R507
19 bar
360°=1 turn = Approx 1.5 bar
(Clockwise rotation =
Increase pressure setting,
Counter clockwise rotation =
Decrease pressure setting)
V
R404A/R507/R448A/R449A/R452A
If refrigerant used is R134a or R513A
Turn the adjusting screw towards counter-
clockwise (-) by 6 turns to set the pressure
from 19 bar to 10 bar.
Controller will be damaged if this warning is not followed
When Fan speed Controller is at factory setting (19 bar):
- Maximum number of turns allowed in clockwise direction (+) = 4.
- Maximum number of turns allowed in anti-clockwise direction (-) = 6
Instructions
118A0665C - AN238286441930en-001401 | 3
© Danfoss | DCS (CC) | 2020.06

-1 bar (Pe)(30in.Hg)
KP 17W, 17B
KP 17B 060-539366, 060-539466
LR 112A 400 V
AC1 10A
AC3 10A
AC11 10A
DC 11
12 W
220 V
A-B
LR
A
240 8
16
48 8A 3A
61B5
12W
50VA
16A96
240
240
120
FL
A
A-C
A-D
SPDT+LP signal Listed refrigeration
controller
LP+HP signal
Contacts
Cut In Cut In
Cut In
Cut out Cut out
Cut out
Differential Differential fixed Differential
Voltage
Use Copper wire only
Tightening torque 20lb.in.
When used acc. to UL regulations
HPLP, man. resetLP, aut. reset
Manual test
Convertible reset
Manual reset
LP-auto.
HP-man.
LP-auto.
HP-auto.
LP diff.
Manual reset
Test
Test
Resist.
Load
Pilot
duty
AC DC
Max.
50 VA
17 - Dual Pressure Switch factory settings
Refrigerants High pressure settings (bar (g)) Low pressure settings (bar (g))
ON OFF ON OFF
R404A/R507/R448A/R449A/R452A 23 27 2 1
R134a/R513A 13 17 2 1
Instructions
4 | AN238286441930en-001401 - 118A0665C © Danfoss | DCS (CC) | 2020.06

OP-LPQE067 - 084 - 098, OP-MPVE068 - 080 - 093 - 099 - 108
OP-LPQE048 - 068, OP-MPVE034 - 046 - 057, OP-MPME048 - 060
Chassis: B2
Chassis: B3
OptymaTM Slim Pack
OptymaTM Slim Pack
Instructions
118A0665C - AN238286441930en-001401 | 5
© Danfoss | DCS (CC) | 2020.06

Code G (version W02): OP-MPVE034 - 046 & OP-MPME048 - 060 & OP-MPZE060
Code G (version W02): OP-MPVE068 - 080 - 093
WD1
WD2
Instructions
6 | AN238286441930en-001401 - 118A0665C © Danfoss | DCS (CC) | 2020.06

Code E (version W02) : OP-MPVE034 - 046 - 068 - 080 - 099 - 108 & OP-MPME048 - 060
Code G (version W04): OP-MPVE034 - 046 - 057 & OP-MPME048 - 060 & LPQE048 - 068
WD3
WD4
Instructions
118A0665C - AN238286441930en-001401 | 7
© Danfoss | DCS (CC) | 2020.06

Code E (version W04) : OP-MPVE034 - 046 - 057 - 068 - 080 - 099 - 108; OP-MPME048 - 060; OP-LPQE048 - 067 - 068 - 084 - 098
Code G (version W04): OP-MPVE068 - 080 - 093
WD5
WD6
Instructions
8 | AN238286441930en-001401 - 118A0665C © Danfoss | DCS (CC) | 2020.06

Code E (version W08) : OP-MPVE046 - 068 - 080 - 099 - 108
Code G (version W10) : OP-MPVE034 -046- 057; OP-LPQE048 - 068
WD7
WD8
Instructions
118A0665C - AN238286441930en-001401 | 9
© Danfoss | DCS (CC) | 2020.06

Code E (version W10) : OP-MPVE046 - 057; OP-LPQE048 - 068
Code G (Version W10) : OP-MPVE068-080
WD9
WD10
Instructions
10 | AN238286441930en-001401 - 118A0665C © Danfoss | DCS (CC) | 2020.06

A1 Supply & phase reversal protection relay
B1* Fan Speed Controller
B2 DUAL Pressure Switch
B3 Low pressure switch
B3* Fan Speed Controller
C1 Start capacitor compressor
C2 Run capacitor compressor
E1, E1* Crankcase heater
F1 Main switch
F1* Fuse control circuit
F2 Overload relay
F3 Fuse control circuit
H1* Low pressure alarms
H2* High pressure alarms
M1 Compressor
M2 Fan motor
K1, K1* Contactor
K2 Start relay
K2* Compressor contactor
K3* Fan contactor
Q1* Main switch
R1,R2 Bleeder resistor
S1* Room thermostat
S2* Discharge gas thermostat
X1 Terminals
Y1* Solenoid valve
Legend
BK black
BU blue
BN brown
GY grey
RD red
WH white
Code E (Version W10) : OP-LPQE067-084-098 & OP-MPVE068-080-099-108
WD11
Instructions
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© Danfoss | DCS (CC) | 2020.06

12 | AN238286441930en-001401 - 118A0665C © Danfoss | DCS (CC) | 2020.06
Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This
also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trade-
marks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.
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