Tripp Lite SRCOOL33K Bedienungsanleitung

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.

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)

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

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

2. Unit Dimensions

78.4 in.

(1991 mm)

42.7 in.

(1085 mm)

23.6 in.

(599 mm)

3. LCD Control Panel

APOWER Button: Switch on/off; default standby.

BMODE 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.

CTEMP + : 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.

DTEMP - : 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.

ESPEED: 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.

FStatus LEDs

GLCD Screen

A B C D E

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

5. PCB and Wiring Diagrams

5.1 Circuit Diagram

UPPER FAN

MOTOR

LOWER FAN

MOTOR

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

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

5. PCB and Wiring Diagrams

5.2.1.3 Power PCBA Gerber Layout

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