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Manual

16

BC251686497767en-US0801

5.  If the termination thermostat fails to close, 

the fail-safe set on the timer will terminate the 
defrost.

6.  The defrost heaters are off.
7.  The low-pressure control closes when the cut-in 

pressure is attained, allows the compressor to 
start.

8.  When the evaporator coil temperature reaches 

23˚F to 30˚F, the fan delay closes and allows the 
fan motors to run.

9.  The system will now operate in the refrigeration 

cycle until another defrost cycle is triggered by 
the timer.

Sequence of operation – Field wiring

Hailguard Installation

1.  Identify the hailguard size needed and trim the 

hailguard (if needed) based on the table shown 
below, cutting with scissors or utility knife

Model

Dimensions

Length

Height

in.

mm

in.

mm

HJXM0150-0200

LJHM0150-0300

26

660

19

480

HJXM0200-0300

29

740

22

550

LNYM0400-0500

HJXM0350-0400

31

780

27

700

HRXM0500-0700

LRYM0600-0800

46

1170

28

720

HRXM0750-1000

58

1470

38

970

2.  Remove the screws from the sides and top of 

the condenser.

3.  Lock the hailguard into place by reattaching 

the screws. Start on the left side, unrolling the 
hailguard before attaching to the right side. Pull 
tight as you progress.

4.  The hailguard is now attached and will protect 

your Optyma Slim condensing unit from hail 
and other elements.

NOTE

This wiring diagram is for field reference only.

1)  Two contactors one for evaporator fan and 

other for defrost heater will be needed. No 
extra contactors to be provided with the 
unit.

2)  Fuse F4 for defrost heaters and cable and 

Fuse F5 for evaporator fans and cables will 
not be supplied with the unit. These will 
need to be purchased separately.

Summary of Contents for OP-HJZM

Page 1: ...Installation and maintenance condensing unit manual OP HJZM HNXM HRXM LNYM LRYM LJHM Manual http cc danfoss com...

Page 2: ...e of the condensing unit must be carried out by qualified personnel only Follow these instructions and best practices on refrigeration engineering during installation commissioning maintenance and ser...

Page 3: ...t or pallet jack for handling Use appropriate and safe lifting equipment Store and transport the unit in an upright position Store the unit between 30 F and 120 F Don t expose the packaging to rain or...

Page 4: ...erial 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 th...

Page 5: ...applied to this product it causes transformation of characteristics or the destruction Operation will become unstable when using other than sine waves for the power supply In this case proper control...

Page 6: ...Such as snow or freezing Check if a line to line short circuit is detected at a connection point of the fan motor It is recommended to protect the circuit with a thermal relay or circuit protector No...

Page 7: ...intenance Switch off the system and isolate the main power supply Ensure that power supply cannot be switched on during installation All electrical components must be selected as per local standards a...

Page 8: ...rify 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 a...

Page 9: ...ctions 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 onc...

Page 10: ...47 4 16 5 7 8 1 2 HRXM0500 2 28 8 49 4 31 5 7 8 1 2 HRXM0600 2 28 8 49 4 31 5 7 8 1 2 HRXM0700 2 28 8 49 4 31 5 7 8 1 2 HRXM0750 2 39 1 61 2 31 5 1 1 8 5 8 HRXM1000 2 39 1 61 2 31 5 1 1 8 5 8 Unit Di...

Page 11: ...1 8 X 7 8 W D H 2X Knockout 7 8 Liquid Line C L C L Suction Line 2X Double Knockout 1 1 8 X 7 8 W H D 2X Knockout 7 8 C L Suction Line Liquid Line C L 2X Double Knockout 1 1 8 X 7 8 W D H 2X Knockout...

Page 12: ...BC251686497767en US0801 Electrical wiring diagrams Wiring Diagram 119 8312 Wiring Diagram 119 8313 Electrical Code N HJZM0150 HNXM0200 0400 HRXM0500 LJHM0150 0200 Electrical Code Q HNXM0200 0400 HRXM...

Page 13: ...51686497767en US0801 Electrical wiring diagrams X 4 2 1 N 3 N O LOAD N C LOAD Wiring Diagram 119 8315 Wiring Diagram 119 8493 Electrical Code Q HJZM0150 LJHM0150 0200 Electrical Code Q LNYM0400 0500 L...

Page 14: ...Manual 14 BC251686497767en US0801 Electrical wiring diagrams Wiring Diagram 119 8640 Wiring Diagram 119 8641 Electrical Code R HRZM0600 1000 Electrical Code R LRYM0600 0800...

Page 15: ...op the refrigerant flow through the evaporator 10 Suction pressure decreases and the compressor contactor opens when the pressure drops below the cut out setting on the low pressure control The compre...

Page 16: ...ensions Length Height in mm in mm HJXM0150 0200 LJHM0150 0300 26 660 19 480 HJXM0200 0300 29 740 22 550 LNYM0400 0500 HJXM0350 0400 31 780 27 700 HRXM0500 0700 LRYM0600 0800 46 1170 28 720 HRXM0750 10...

Page 17: ......

Page 18: ...erter Scrolls Danfoss Turbocor Compressors Danfoss Scrolls Danfoss Optyma Condensing Units Danfoss Maneurop Reciprocating Compressors BC251686497767en US0801 Danfoss DCS CC 2019 11 Our products can be...

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