Tripp Lite SRCOOL33K Manuale utente
1
Service Manual
Self-Contained
Air Conditioning Unit
Model: SRCOOL33K
1111 W. 35th Street, Chicago, IL 60609 USA • www.tripplite.com/support
Copyright © 2018 Tripp Lite. All rights reserved.
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
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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
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
FG
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
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