Tripp Lite SRCOOL33K User manual

1

Service Manual

Self-Contained

Air Conditioning Unit

Model: SRCOOL33K

1111 W. 35th Street, Chicago, IL 60609 USA • www.tripplite.com/support

This document is intended for qualiﬁed service technicians.

For questions, contact Tripp Lite Technical Support at 773.869.1234 or https://www.tripplite.com/support

The contents in this service manual are subject to change without notice.

2

Table of Contents

1. Speciﬁcations 3

2. Unit Dimensions 4

3. LCD Control Panel 5

4. Refrigerant Cycle Diagram 6

5. PCB and Wiring Diagrams 7

5.1 Circuit Diagram 7

5.2 PCBA Diagrams 8

5.2.1 Power PCBA 8

5.2.1.1 Power PCBA Schematic 8

5.2.1.2 Power PCBA Critical 9

Components Layout

5.2.1.3 Power PCBA Gerber Layout 10

5.2.2 Display and Control PCBA 11

5.2.2.1 Display and Control 11

PCBA Schematic

5.2.2.2 Display and Control 12

PCBA LCD and Buttons Layout

5.2.2.3 Display and Control 12

PCBA Gerber Layout

5.2.3 Translator PCBA 13

5.2.3.1 Translator PCBA Schematic 13

5.2.3.2 Translator PCBA Gerber Layout 14

6. Unit Disassembly 15

6.1 Removing Side Panels 15

6.2 Opening the Door 15

6.3 PCB Cover Removal 16

7. Exploded Diagram and BOM 17

8. Electronic Function 21

8.1. Main Features 21

8.2 General Controller Technical Speciﬁcations 21

8.3 Sensor Deﬁnitions 21

8.4 Main Control Functions 22

8.4.1 Energy Saving Mode 22

8.4.2 Normal Mode 23

8.5 Fan Speed Switching (Evaporator) 24

8.6 Other Controls (Self-Evaporating Motors 24

and Water Pumps)

8.7 Internal Timers 24

8.8 Protection Controls 24

8.8.1 Compressor Delay Protection 24

8.8.2 Defrost Protection 24

8.8.3 Other Protection Controls 24

8.9 Memory Function 25

8.10 UART/RS232 Communication 25

8.11 Factory Defaults 25

8.12 Unit Defaults During Power Up 25

After Power Loss

9. Basic Test Procedure 26

9.1 Defective Compressor 26

9.1.1 Compressor Wiring Test 26

9.1.2 Ground Test 26

9.1.3 Checking Compressor Efﬁciency 26

9.1.4

Compressor Thermal Overload (Internal)

27

9.1.5 Testing the Internal Overload for Failure 27

9.2 Sealed Refrigeration System Repairs 27

9.2.1 Equipment Required for 27

Refrigeration System Repairs

9.2.2 Equipment Requirements 27

9.2.3 Compressor Replacement 28

9.2.4 Special Procedure in the Event of 28

Compressor Motor Burnout

9.2.5 Refrigerant Charge 29

9.3 Fan Motor 29

9.3.1 Fan Motor Test 29

9.4 Capacitor 30

9.4.1 Capacitor Test 30

10. Temperature Sensor Table 31

11. Troubleshooting 32

11.1 Troubleshooting Table 32

11.2 Troubleshooting Flowcharts 34

11.2.1 General Troubleshooting Flowchart 34

11.2.2 Electrical System Troubleshooting 35

Flowchart

Español 36

3

1. Speciﬁcations

Model SRCOOL33K

Nameplate Marking TRIPPLITE

Power Supply 1φ, 208~240V/60 Hz

Cooling Capacity 33000 Btu/h

Cooling Power Consumption 3000W

Cooling Rated Current 12.5A

Cooling SCE 8.24W/W

System Data

Refrigerant Type R410A / 2250 g

Operation Pressure 3.0~3.5 Mpa

Moisture Removal (30oCR H80%) 80.4 L/Day

Indoor Air Flow 29 m³/min

Noise Level <60 dBA

Dimensions and Weight

Unit Dimensions [W x H x D] 23.6 x 78.4 x 42.7 in. (599 x 1991 x 1085 mm)

Shipping Dimensions [W x H x D] 26 x 84.3 x 44.9 in (660 x 2140 x 1140 mm)

Net/Gross weight 558 lb. / 672 lb. (253 kg / 305 kg)

System Details

Compressor Model 55A842G

Type Rotary

Capacity 33330 Btu ±5% /h

Input 3315W ±5%

Rated Current (RLA) 14.8A ±5%

Locked Rotor Amp (LRA) 79.5A ±5%

Thermal Protector UP14RE5115

Capacitor 40 μF / 420V AC

Refrigerant Oil 660 CC ±10 CC

Oil Type NMOC Ze-GLES RB68EP (or equivalent)

Fan Motor EVA Motor CON Motor

Model FH355AP000 FH355AP000

Input 355W / 325W / 215W 345W

Capacitor 8uF / 17uF / 25uF 8uF

Speed (hi/mi/lo) ±50 1600 / 1200 / 1000 Rpm 1550 Rpm

Evaporator (EVA)

Number of Rows 3

Tube Pitch [a] x Row Pitch [b] 0.83 x 0.78 in. (21 x 19.7 mm)

Fin Spacing 18 FPI

Fin Type (Code) Hydrophilic aluminum

Tube Outside Dimension Type φ7 mm Inner-Groove Tube

Axial [L x H x W] 18.3 x 24.8 x 1.5 in. (465 x 630 x 38.1 mm)

Number of Circuits 5

Condenser (CON)

Number of Rows 4

Tube Pitch (a) x Row Pitch (b) 0.83 x 0.78 in. (21 x 19.7 mm)

Fin 18

Fin Type (Code) Aluminum

Tube Outside Dimension Type φ7 mm Inner-Groove Tube

Axial [L x H x W] 18.3 x 36.4 x 2.5 in. (465 x 924 x 63.5 mm)

Number of Circuits 2

4

2. Unit Dimensions

78.4 in.

(1991 mm)

42.7 in.

(1085 mm)

23.6 in.

(599 mm)

5

3. LCD Control Panel

A

POWER Button: Switch on/off; default standby.

B

MODE Button: Switch between energy saving mode (ENERGY SAVING) and normal mode (NORMAL COOLING).

Note: Normal cooling mode is the default setting. When the unit is powered off, hold this button for 3 seconds to switch between

Fahrenheit (F) and Celsius (C) temperature units.

Note: Fahrenheit is the default setting.

C

TEMP + : Sets cooling temperature in +1°F/°C increments. Hold this button to scroll to the highest value.

The set temperature will ﬂash in the display.

D

TEMP - : Sets cooling temperature in -1°F/°C increments. Hold this button to scroll to the lowest value.

The set temperature will ﬂash in the display.

E

SPEED: When in ENERGY SAVING mode, use this button to switch between automatic, high, medium or low fan speed.

HI SPEED, MED SPEED, LOW SPEED, or AUTO will light up accordingly.

Note: AUTO is the default setting. If there is no response during NORMAL COOLING, the speed will be set to AUTO.

F

Status LEDs

G

LCD Screen

F

G

A B C D E

6

4. Refrigerant Cycle Diagram

The below diagram brieﬂy describes the critical components and their functions combined with the refrigeration system.

bypass chamber

Bypass chamber

Filter

Bypass chamber

High-pressure gas coolant

Low-pressure gas coolant

High-pressure liquid coolant

Low-pressure liquid coolant

Dissipate heat

1) LPS: Monitor the system for

low-pressure faults, such as

coolant leakage or perhaps a

blockage...

2) service port x 2

3) HPS: Monitor the system for

high-pressure faults, such as

the condenser being dirty, or

the condenser fan failure...

4) Sight glass

5) Fusible plug

5 one-way valves to

avoid coolant ﬂow

in reverse direction

Solenoid valve which divert

partial gas coolant to the EVA

for reducing the cooling

efﬁcient

Cool the air and remove the heat

energy from the air

Condenser

CMP

Evaporator

Capillary

Reduce

coolant pressure

7

5. PCB and Wiring Diagrams

5.1 Circuit Diagram

UPPER FAN

MOTOR

LOWER FAN

MOTOR

8

5. PCB and Wiring Diagrams

5.2 PCBA Diagrams

5.2.1 Power PCBA

The following diagrams are for Tripp Lite part no. 167752T.

5.2.1.1 Power PCBA Schematic

9

5. PCB and Wiring Diagrams

5.2.1.2 Power PCBA Critical Components Layout

Display

Inner Temperature

Sensor

Outer Temperature

Sensor

Water Full Switch

Lower Fan

Upper

Fan

10

5. PCB and Wiring Diagrams

5.2.1.3 Power PCBA Gerber Layout

11

5. PCB and Wiring Diagrams

5.2.2 Display and Control PCBA

The following diagrams are for Tripp Lite part no. 167751T.

5.2.2.1 Display and Control PCBA Schematic

12

5. PCB and Wiring Diagrams

5.2.2.2 Display and Control PCBA LCD and Buttons Layout

5.2.2.3 Display and Control PCBA Gerber Layout

13

5. PCB and Wiring Diagrams

5.2.3 Translator PCBA

The following diagrams are for Tripp Lite part no. 167788T.

5.2.3.1 Translator PCBA Schematic

14

5. PCB and Wiring Diagrams

5.2.3.2 Translator PCBA Gerber Layout

15

6. Unit Disassembly

6.1 Removing Side Panels

To remove a side panel from the unit, push down the latches to disengage the locks. Then carefully pull the panel out and up

to remove from the unit’s frame. Repeat for additional panels.

6.2 Opening the Door

Turn the door handle counterclockwise and pull out to open the door.

16

6. Unit Disassembly

6.3 PCB Cover Removal

To remove the PCB Cover, remove the screws as shown in the diagram below.

Screws

PCB

17

7. Exploded Diagram and BOM

Note: Parts with the RP- preﬁx can be ordered directly from Tripp Lite. For all other parts, contact Tripp Lite Technical Support at

773.869.1234 or https://www.tripplite.com/support.

Index Tripp Lite Part No. Description Qty. / Unit

1 RP-720370 Air Duct 4

2 Sheet Metal - Front Panel Supporter 1

3 RP-96A010 Display Panel Membrane 1

4 RP-202301B Button Display Panel - Front Case 1

5 RP-167751T PCBA - Display & Control 1

6 RP-202301AX Button Display Panel - Rear Case 1

7 Sheet Metal - Bottom Base 1

8 Sheet Metal - Front Panel C 1

9 Sheet Metal - Front Panel B 1

10 Sheet Metal - Front Panel A 1

11 Sheet Metal - CON Air Duct Supporter A 1

12 Sheet Metal - CON Air Duct Supporter C 1

13 Sheet Metal - Top Fresh Air Cover 1

14 Sheet Metal - Top Cover 1

15 Sheet Metal - Side Panel Supporter 6

16 RP-55050D Sheet Metal - Side Panel 4

17 RP-400369 Float Switch (Water Level) 1

18 Sheet Metal - EVA Tray 1

19 Caster 4

20 Sheet Metal - Compressor Bracket 1

21 RP-570008 Compressor 1

22 Filler Pipe Bracket 1

23 Sheet Metal - Compressor Partition 1

24 Sheet Metal - EVA Fan Motor Supporter 1

25 RP-530074 Water Pump 1

26 Sheet Metal - Partition B 1

27 Sheet Metal - CON Fan Motor Supporter 1

28 Sheet Metal - CON Air Duct Supporter B 1

29 810612 CON Water Dispenser 1

1

18

7. Exploded Diagram and BOM

Index Tripp Lite Part No. Description Qty. / Unit

30 Sheet Metal - Water Dispenser Cover 1

31 Sheet Metal - CON Air Duct Supporter D 1

32 Sheet Metal - CON Left Partition 1

33 RP-510222 AC Fan Motor 2

34 Fan Duct Ring 2

35 Sheet Metal - CON Water Tray 1

36 Sheet Metal - CON Water Tray Supporter 1

37 RP-635296 Startup Capacitor 25uF / CON Fan Motor - Medium Speed 1

38 Sheet Metal - Power PCBA Partition 1

39 RP-167752T PCBA – Power 1

40 RP-635294 Startup Capacitor 8uF / CON Fan Motor - High Speed or EVA Fan Motor 2

41 90574B Packing Protector (3 pcs. per Set) 4

42 RP-635295 Startup Capacitor 40uF / Compressor 1

43 AC Connector 1

44 RP-167788T PCBA - SNMP Interface 1

45 Sheet Metal - EVA Air Duct Supporter 1

46 Cable Protection Pipe 1

47 24000C Condenser 1

48 Sheet Metal - CON Right Partition 1

49 5504BD 3-Way Water Valve 1

50 Closed Valve Connecting Pipe B 1

51 Sheet Metal - EVA Tray Supporter 1

52 Low Pressure Pipe 1

53 Sheet Metal - EVA Left Partition 1

54 Sheet Metal - EVA Right Partition 1

55 Sheet Metal - Supporter 1

56 Sheet Metal - EVA Partition 1

57 24000D Evaporator 1

58 EVA Connecting Pipe 1

59 Y-Shaped Pipe Connector 5

60 1-Way Valve Connecting Pipe 5

61 Caterpillar Connecting Pipe 5

62 1-Way Valve 5

63 2-Way Valves - Divert Pipe 1

64 SNMP Cable 1

65 202198 SNMP Card Holder 1

66 102879ELFTB SNMP Box Cover with I/O Holes 1

67 Cable Protector 1

68 Sheet Metal - Cable Terminal Box 1

69 Cable Clip 1

70 Cable Terminal 1

71 Sheet Metal - Cable Terminal Box Cover 1

72 High Pressure Pipe B 1

73 Wire Brush 1

74 Sheet Metal - Wire Brush Supporter 1

75 Closed Valve Connecting Pipe 1

76 250008 Service Port / Closed Valve 2

77 Service Port Mounting 2

78 250007 Bypass Valve (5-in-1 Distributor) 1

19

7. Exploded Diagram and BOM

Index Tripp Lite Part No. Description Qty. / Unit

79 Bypass Value Connecting Pipe 2

80 RP-40036A Coolant Pressure Sensor LPS 1

81 RP-40036B Coolant Pressure Sensor HPS 1

82 250006 2-Way Valves - Outlet Connecting Pipe 1

83 250009 Filter Pipe 1

84 Condenser Outlet Connecting Pipe 1

85 Hot Gas Bypass High-Pressure Line 1

86 250005 2-Way Valves 1

87 High Pressure Pipe A 1

88 Sheet Metal - Self-Evaporating Motor Supporter 2

89 RP-500018 Self-Evaporating Motor 2

90 Self-Evaporating Retaining Sheet 2

91 Self-Evaporating Fan Wheel 2

92 Sheet Metal - Partition A 1

93 720375 PU Filter 2

94 Rear Door Lock 1

95 Sheet Metal - Rear Fresh Air Cover 1

96 RP-635293 Startup Capacitor 17uF / CON Fan Motor - Low Speed 1

97 8205BA Door Stopper 4

98 Door Hinge 2

99 Sheet Metal - Rear Panel 1

100 Sheet Metal - Wooden Pallet Bracket 2

101 301101 Footer 4

102 905748 Wooden Pallet - Anti-Shock 1

103 55050B Ramps 2

104 905749 Export Carton Box 1

105 90574A Export Carton Box Cover 1

106 Whipper Motor - Extension 2

107 Whipper Motor - Axis 2

108 Metal Cover - Power PCBA & Startup Capacitors 1

109 250004 Sight Glass 1

110 Fusible Plug Stand 1

111 Fusible Plug 1

112 73171B Power Cable with Plug 1

113 Left Side Door, Air Blocker 1

114 Right Side Door, Air Blocker 1

PKG "Consme de Energía" Label 1

PKG 969561 "ShockWatch" Warning Label 1

PKG 969560 "Tip Tell" Warning Label 1

PKG 965631 & 911080 Carton Box Bar Code 1

PKG 965631 & 911080 Carton Box Serial No. 1

PKG 932837 Mex. Warranty Addendum - Póliza de Garantía en Méx 1

LBL 96A2E0 Rating / Nameplate Label (Unit) 1

LBL 96A23E Schematic / Circuit Label (Unit) 1

LBL 965631 & 911080 Unit Serial No. 1

PKG 933757 User Manual 1

PKG 93378C Unpack Instructions 1

PKG 93378B Installation Manual 1

LBL 969547 Warning Label for Power Plug (Unit) 1

20

7. Exploded Diagram and BOM

Index Tripp Lite Part No. Description Qty. / Unit

LBL 96A2EC LBL, Rear Door Opening Wrn 1

LBL 969448 LBL, Hot Surface Wrn 2

LBL 969446 LBL, Sharp Edge Wrn 4

LBL 96A2ED LBL, Service Port ID, HP 1

LBL 96A2ED LBL, Service Port ID, LP 1

LBL 96A2EF LBL, High Pressure Sensor 1

LBL 96A2F0 LBL, Low Pressure Sensor 1

LBL 969447 LBL, Rotating Part Wrn 4

LBL 96A2AB WATER VALVE INSTRUCTION LABEL 1

PKG 969542 TRIPPLITE Shipping Mark Logo 2

PKG 96A2E1 LBL, Shipping Icons 2

PKG 102711 Rear Door Key 2

LBL 96A31D P/S, LBL, Prod Start Up 1

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