Movincool Office Pro 12 / Office Pro 18 / Office Pro 24 Owner's manual

Category
Split-system air conditioners
Type
Owner's manual

This manual is also suitable for

SERVICE MANUAL
OFFICE PRO 60
SERIAL NUMBER FROM APRIL 2007 (0407) TO PRESENT
DocID: 00G00016E
© 2008 DENSO SALES CALIFORNIA, INC.
All rights reserved. This book may not be reproduced or copied, in
whole or in part, without the written permission of the publisher. DENSO
SALES CALIFORNIA, INC. reserves the right to make changes without
prior notice. MovinCool is a registered trademark of DENSO
Corporation.
Table of Contents
Table of Contents
Operation Section
1. PRECAUTIONS FOR SAFETY
1.1 Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Definition of Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 General Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2. GENERAL DESCRIPTION
2.1 Spot Cooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Compact Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.3 Easy Transportation and Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4 Energy Conservation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3. CONSTRUCTION
3.1 Exterior Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.2 Exterior Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.3 Internal Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.4 Basic Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.5 Air Flow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.6 Compressor and Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.7 Condensate Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.8 Drain Tanks (optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4. SPECIFICATIONS
4.1 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2 Characteristics (at 230 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3 Characteristics (at 208 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5. REFRIGERANT SYSTEM
5.1 Refrigerant System Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2 Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3 Condenser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.4 Capillary Tube. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.5 Evaporator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.6 High Pressure Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6. ELECTRICAL SYSTEM
6.1 Circuit Diagram and Control Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2 Basic Operation of The Office Pro 60 Electrical Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table of Contents
6.3 Control Box. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.4 Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.5 Compressor Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
6.6 Condensate Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.7 Drain Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6.8 Automatic Restart after Power Interruption. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.9 Compressor Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.10 Temperature Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
6.11 Fan Mode Control Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.12 Temperature Scale Display Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.13 Warning Signal Connection (Output Signal Terminal L+ and L-) . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
6.14 Fire Alarm Control Panel Connection (Input Signal Terminal E+ and E-). . . . . . . . . . . . . . . . . . . . . 30
Table of Contents
Repair Section
7. TROUBLESHOOTING
7.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
7.2 Self-Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.3 Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.4 Basic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8. DISASSEMBLY
8.1 Parts Construction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
8.2 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.3 Removal of Electrical Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.4 Removal of Blower Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
8.5 Removal of Condensate Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8.6 Inspection of Capacitor (for Fan Motor and Compressor) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.7 Inspection of Drain Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
8.8 Inspection of Fan Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.9 Inspection of Compressor Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.10 Inspection of Wiring Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.11 Inspection of Thermistor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.12 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9. REFRIGERANT SYSTEM REPAIR
9.1 Repair of Refrigerant System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
9.2 Removal of Refrigeration Cycle Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
9.3 Charging the System with R-410A Refrigerant. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
9.4 Refrigerant Charging Work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
10. REASSEMBLY
10.1 Removal of Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10.2 Compressor Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10.3 Blower Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
10.4 Wiring Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10.5 Perform the Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10.6 Caster Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
10.7 Schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Operation Section
6
1. PRECAUTIONS FOR SAFETY
1.1 Foreword
This manual has been published to service the MovinCool Office Pro 60. Please use this service
manual only when servicing the Office Pro 60.
1.2 Definition of Terms
1.3 General Precautions
WARNING
All electrical work if necessary, should only be performed by qualified electrical
personnel. Repair to electrical components by non-certified technicians may result in
personal injury and/or damage to the unit. All electrical components replaced must be
genuine MovinCool parts, purchased from an authorized reseller.
When handling refrigerant, always wear proper eye protection and do not allow the
refrigerant to come in contact with your skin.
Do not expose refrigerant to an open flame.
The proper electrical outlet for MovinCool units must be equipped with a “UL” approved
ground-fault breaker to prevent electrical shock from the unit.
When brazing any tubing, always wear eye protection, and work only in a well ventilated
area.
Disconnect power before servicing unit.
Be careful of any sharp edges when working on unit.
Describes precautions that should be observed in order to prevent injury to
the user during installation or unit operation.
Describes precautions that should be observed in order to prevent damage to
the unit or its components, which may occur during installation or unit
operation if sufficient care is not taken.
NOTE Provides additional information that facilitates installation or unit operation.
WARNING
CAUTION
Operation Section
7
2. GENERAL DESCRIPTION
2.1 Spot Cooler
In general, conventional air conditioners cool
the entire enclosed environment. They act as
“heat exchangers”, requiring an interior unit
(evaporator) to blow cool air into the interior
and an exterior unit (condenser) to exhaust
exchanged heat to the outdoors.
Unlike conventional air conditioners, the
MovinCool Office Pro 60 is a spot cooler which
directs cool air to particular areas or objects.
MovinCool Office Pro 60 has the following features:
2.2 Compact Design
The innovative design of MovinCool Office Pro
60 has resulted in one compact unit, replacing
the need for two separate units.
2.3 Easy Transportation and
Installation
With the whole cooling system built into one
compact unit, MovinCool Office Pro 60
requires no piping and can be easily
transported and installed.
2.4 Energy Conservation
MovinCool Office Pro 60 is economical
because it cools only the area or objects which
need to be cooled.
I000501
Condenser
(Outdoor Unit)
Evaporator
(Indoor Unit)
I001905
Operation Section
8
3. CONSTRUCTION
3.1 Exterior Dimensions
I001906
(40.8)
(8.5)
(2.6)
(29.9)
(3.6)
(51.6)
(Unit: inch)
(30.2)
(55.0)
(DIA. 15.7)
(62.2)
(6.1)
(65.0)
(10.0)
(27.6)
(18.7)
(2.4)
(3.6)
(2.6)
Operation Section
9
3.2 Exterior Components
I001907
Cold Air Outlet Grill
Evaporator Air Inlet Grill
Condenser Air Outlet Duct
Service PanelPower CordCondenser Air Inlet Panel
Caster
Operation Panel
Operation Section
10
3.3 Internal Structure
3.4 Basic Construction
The MovinCool Office Pro 60 is compact in construction because the condenser and the
evaporator are enclosed in one unit. The interior is divided into three sections. The upper front
face is equipped with the evaporator, and the lower front face contains the condensate pump
and optional drain tanks. The rear section contains the condenser, the compressor and the
control box.
I001908
Evaporator
Fan
(Evaporator)
Fan
(Condenser)
Fan Motor
(Condenser)
Fan Motor
(Evaporator)
(Behind Fan)
Control Box
Drain Switch
Compressor
Condensate Pump
Drain Pan
Capillary Tube
High Pressure
Switch
Condenser
Operation Section
11
3.5 Air Flow
Air drawn from the right side face passes through the condenser which extracts the heat. This
hot air is blown out through the upper exhaust air duct. Air taken in from the front face is cooled
by the evaporator and then blown through the cool air vent. All the air inlets are equipped with
filters, and the exhaust air duct is protected by metal grill.
3.6 Compressor and Fans
The compressor is hermetically sealed. Two sets of a two-speed fan motor with a centrifugal fan
are used to draw air across the evaporator and condenser.
3.7 Condensate Pump
The condensate pump and a 20 ft (6 m) drain hose are included with the Office Pro 60 to provide
continuous operation without the need of the drain tanks. The condensate pump has a maximum
head lift of 17 ft (5.2 m) at 230 VAC or 13 ft (4.0 m) at 208 VAC.
3.8 Drain Tanks (optional)
A set of two 5.0 gal (19 L) drain tanks are supplied as optional accessory for Office Pro 60. When
drain tanks are used instead of condensate pump, the condensate (water) is collected into both
tanks. The drain switch activates and stops the operation when tanks reach the level of
approximately 8.0 gal (30 L).
I001909
Condenser Air In
Evaporator Air In
Exhaust Air Out
Cool Air Out
Operation Section
12
4. SPECIFICATIONS
4.1 Technical Specifications
ITEM SPECIFICATIONS
cinortcelElenaP lortnoCserutaeF cinortcelE
cinortcelElortnoC tatsomrehT
Cooling Capacity
*1
)W 58571/54171( h/utB 00006/00585V 032/802-yticapaC
llorcS citemreHepyT noisserpmoCrosserpmoCtiucriC tnaregirfeR
Wk 98.3V 032 ta tuptuO detaR rotoM
niF etalProtaropavE
niF etalPresnednoC
ebuT yrallipaClortnoC tnaregirfeR
)gk 08.1( bl 79.3/A 014-Rytitnauq desolcnE/tnaregirfeR
Ventilation Equipment For
Evaporator
lagufirtneCepyT naF
m 0003/0033( MFC 0771/0491wol/hgih-wolF riA .xaM
3
/h)
Wk 33.0/06.0V 032 ta wol/hgih-tuptuO detaR rotoM
)aP 422( GWI 9.0erusserP citatS lanretxE .xaM
Ventilation Equipment For
Condenser
lagufirtneCepyT naF
m 0054/0184( MFC 0562/0382wol/hgih - wolF riA .xaM
3
/h)
Wk 29.0/02.1V 032 ta wol/hgih-tuptuO detaR rotoM
)aP 212( GWI 58.0erusserP citatS lanretxE .xaM
zH 06 HP 1 ,V 032/802tnemeriuqeR rewoPscitsiretcarahC cinortcelE
V 352 XAM ,V 891 NIMegatloV .XAM .NIM
Current Consumption-208/230 V
*1
32/29 A
Total Power Consumption-208/230 V
*1
6.6/6.6 kW
Power Factor-208/230 V
*1
99/99 %
A 061tnerruC gnitratS
A 05ezis esuF dednemmoceR
05-6noitarugifnoC gulP AMENdroC rewoP
tf 6 x )eroc-3( GWA 6htgneL x egauG
)dednemmocer( epyt tcatnoc yrDtupnI mralA eriFnoitcennoC langiS
No-Voltage Contact Input/Contact
resistance Less than 100 ohm
ssel ro )CA/CD( V 03 ta A 2tuptuO langiS gninraW
(resistive load)
Net weight 623 lb (283 kg)
Operation Section
13
Specifications are subject to change without notice.
< NOTE >
*1 :Rating Condition: 95 °F (35 °C), 60 %RH
*2 :Measured at 3.28 ft (1 m) from surface of unit.
Operating Condition Inlet air: Maximum 105 °F (41 °C), 50 %RH
Inlet air: Minimum 65 °F (18.3 °C), 50 %RH
Sound Level
*2
With Condenser Duct-high/low 69/67 dB (A)
Without Condenser Duct-high/low 71/69 dB (A)
Max. Duct Equivalent Length-Per Cold Duct Hose/Hot Duct Hose 40/100 ft (12.1/30.5 m)
Condensate Pump 1/30 HP, 230 V, 0.5 A, 75 W,
Discharge: 3/8 in (9.53 mm)
OD barbed
ITEM SPECIFICATIONS
Operation Section
14
4.2 Characteristics (at 230 V)
I001910
65
60
50
55
45
40
20
30
35
25
15
>evruC ecnereffiD erutarepmeT riA looC<>evruC yticapaC gnilooC<
23.4(13)
21.6(12)
19.8(11)
18.0(10)
16.2(9)
14.4(8)
12.6(7)
10.8(6)
9.0(5)
68(20)
77(25)
86(30)
95(35)
7.2(4)
Delta-T °F (°C)
Dry Bulb Temp. °F (°C)
Dry Bulb Temp. °F (°C)
Dry Bulb Temp. °F (°C)
Wet Bulb Temp. °F (°C)
Wet Bulb Temp. °F (°C)
(25)
77
(20)
68
(35)
95
(30)
86
(15)
59
(10)
50
Cooling Capacity (x10
3
Btu/h)
Relative Humidity (%)
30 40 50 60 70 80
Current Consumption (A)
Power Consumption (kW)
>evruC noitpmusnoC tnerruC<>evruC noitpmusnoC rewoP<
8.0
7.0
6.0
5.0
4.0
68(20)
77(25)
86(30)
95(35)
68(20)
77(25)
86(30)
95(35)
(25)
77
(20)
68
Wet Bulb Temp. °F (°C)
(35)
95
(30)
86
(25)
77
(20)
68
Operation Section
15
4.3 Characteristics (at 208 V)
I001911
65
60
50
55
45
40
25
35
40
30
20
>evruC ecnereffiD erutarepmeT riA looC<>evruC yticapaC gnilooC<
23.4(13)
21.6(12)
19.8(11)
18.0(10)
16.2(9)
14.4(8)
12.6(7)
10.8(6)
9.0(5)
68(20)
77(25)
86(30)
95(35)
7.2(4)
Delta-T °F (°C)
Dry Bulb Temp. °F (°C)
Dry Bulb Temp. °F (°C)
Dry Bulb Temp. °F (°C)
Wet Bulb Temp. °F (°C)
Wet Bulb Temp. °F (°C)
(25)
77
(20)
68
(35)
95
(30)
86
(15)
59
(10)
50
Cooling Capacity (x10
3
Btu/h)
Relative Humidity (%)
30 40 50 60 70 80
Current Consumption (A)
Power Consumption (kW)
>evruC noitpmusnoC tnerruC<>evruC noitpmusnoC rewoP<
8.0
7.0
6.0
5.0
4.0
68(20)
77(25)
86(30)
95(35)
68(20)
77(25)
86(30)
95(35)
(25)
77
(20)
68
Wet Bulb Temp. °F (°C)
(35)
95
(30)
86
(25)
77
(20)
68
Operation Section
16
5. REFRIGERANT SYSTEM
5.1 Refrigerant System Construction
The component parts of the refrigerant system include the following:
Compressor, Evaporator, Condenser, Capillary tube, High Pressure Switch
These parts are all connected by copper tubing. All the connections have been brazed.
I001912
Condenser
Evaporator
Condenser
Compressor
Suction Pipe
Condenser
Inlet Pipe
Compressor
Discharge Pipe
Compressor
Compressor
Condenser
Outlet Pipe
Evaporator
Evaporator
Inlet Pipe
Capillary
Tube
Evaporator
Outlet Pipe
Condenser
Condenser
Fan
Evaporator
Fan
Evaporator
Compressor
Capillary
Tubes
Flow of Refrigerant
Operation Section
17
5.2 Compressor
The compressor used for the unit is hermetically sealed. The compressor and the compressor
motor are in one casing.
(1) Compressor theory of operation
The scroll utilizes an involuted spiral which, when matched with a mating scroll form, generates
a series of crescent-shaped gas pockets between the two members. During compression, one
scroll remains stationary (fixed scroll) while the other form (orbiting scroll) is allowed to orbit (but
not rotate) around the first form. As this motion occurs, the pockets between the two forms are
slowly pushed to the center of the two scrolls while simultaneously being reduced in volume.
When the pocket reaches the center of the scroll form, the gas, which is now at a high pressure,
is discharged out of a port located at the center. During compression, several pockets are being
compressed simultaneously, resulting in a very smooth process. Both the suction process (outer
portion of the scroll members) and the discharge process (inner portion) are continuous.
(2) Compressor operation
1) Compression in the scroll is created by the interaction of an orbiting spiral and a stationary spiral.
Gas enters the outer openings as one of the spirals orbits.
2) The open passages are sealed off as gas is drawn into the spiral.
3) As the spiral continues to orbit, the gas is compressed into two increasingly smaller pockets.
4) By the time the gas arrives at the center port, discharge pressure has been reached.
5) Actually, during operation, all six gas passages are in various stages of compression at all times,
resulting in nearly continuous suction and discharge.
< NOTE >
When the compressor shuts off, the compressor motor may run backward for a moment or two
until internal pressures is equalized. This has no effect on compressor durability but may cause
an unexpected sound after the compressor is turned off and should not be diagnosed as a
malfunction.
I001767
1 3 4 52
Operation Section
18
5.3 Condenser
The condenser is a heat exchanger with copper tubes that are covered with thin aluminum
projections called plate fins.
Heat is given off and absorbed by air being pulled across the condenser fins by the centrifugal
fan and then expelled through the exhaust air duct.
5.4 Capillary Tube
The capillary tube is a long thin tube utilizing
line flow resistance to serve as an expansion
valve. The length and the inner diameter of the
capillary tube are determined by the capacity of
the refrigeration system, specified operating
conditions, and the amount of refrigerant. The
capillary tube causes the high pressure, high
temperature liquid refrigerant sent from the
condenser to expand rapidly as the refrigerant
is sprayed out through the fixed orifice in the capillary tube. As a result, the temperature and
state of the refrigerant becomes low and mist-like respectively, causing it to evaporate easily.
5.5 Evaporator
The evaporator, like the condenser, is a heat exchanger covered with plate fins. Heat is removed
from the air being pulled across the evaporator by the centrifugal fan and the resulting cool air
is expelled through the cool air vent.
5.6 High Pressure Switch
The high pressure switch prevents the
condenser and compressor from being
damaged by excessively high pressure in the
high pressure line of the refrigeration cycle.
The switch is normally closed. The snap disk
responds to the variations in pressure and, if
pressure is abnormally high, the snap disk
moves down to push the pin down, causing the
internal contacts to open. This interrupts the
ground signal at the control board (J104 connector) which turns the compressor off.
Possible causes of this trouble include:
- The condenser air filter is dirty, restricting air flow.
- The condenser blower is defective.
I001887
High Temp./High Pressure
Liquid Refrigerant
Low Temp./Low Pressure
Gas and Liquid Mixture
I001768
Pressure of Refrigerant
Movable Point
Snap Disk
Pin
Terminal
Lead Wires
Stationary Point
Molding by Resin
Case
Operation Section
19
6. ELECTRICAL SYSTEM
6.1 Circuit Diagram and Control Box
I001913
TB2
TB1
G
AC 208/230 V 1φ 60 Hz
AP
G
G
G
G
T1
TB1
3L2
1L1
HI
HI
LO
LO
MF2
2T1
5L3
MCC
MCC
MC
MDP
Condensate Pump
RTH THS DS
CB
HPRS
TB2
L-
J106
J108
J105
J101 J102 J103 J104
J201
L+
E-
E+
3
2
1
IOLC
IOLF
MF1
IOLF
CC
12
CF2
12
CF1
12
G
G
ODSFDS
4T2
6T3
A1
A2
TRR1
J9
J10
RB
J8
J7
J6
J5
J4
J3
J2
J1
AP
TB1
TB2
CB
RB
MF1
MF2
MC
CF1
CF2
CC
Attachment Plug
Terminal Block
Terminal Block
Control Board
Relay Board
Condenser Fan Motor
Evaporator Fan Motor
Compressor Motor
Capacitor for Condenser Motor
Capacitor for Evaporator Motor
Capacitor for Compressor
IOLF
IOLC
DS
THS
RTH
G
HPRS
MCC
MDP
FDS
ODS
Inner Overload Relay of Fan Motor
Inner Overload Relay of Compressor
Full Drain Warning Switch
Freeze Protection Thermistor
Room Thermistor
Grounding
High Pressure Switch
Relay for Compressor and Condenser Fan Motor
Condensate Pump Motor
Drain Float Switch
Drain Overflow Switch
Terminal Block
(Signal Connection)
Relay Board Fuse
Relay Board
Relay
Terminal Block
Dip Switch
Fan Capacitor
(Condenser)
Fan Capacitor
(Evaporator)
Compressor
Capacitor
Operation Section
20
6.2 Basic Operation of The Office Pro 60 Electrical Circuit
There are two basic components used to control the operation of the Office Pro 60 electrical
system:
- Control panel assembly
- Control box
The control panel assembly contains the control panel, control board (with inputs for the freeze
and room temperature thermistors), drain switch, high pressure switch and a microprocessor.
(1) Fan mode
High Fan Mode
When the FAN MODE button on the control panel is pressed, the microprocessor turns on “FAN
HI” “COOL OFF” indication of LCD and activates both the fan on relay and fan mode relay. This
sends line voltage (208/230 VAC) from the fan on relay to the N.O. (normally open) contacts of
the fan mode relay. This output is connected to the J8 terminal (relay board) where the high
speed wire of the fan motor is connected.
When this button is pressed again, fan turns to low mode (see below). Press again, fan stops.
High fan mode is automatically switched
depending on room temperature. When room
temperature is decreased down to 80 °F
(27 °C) or below, fan mode is switched to
HIGH. When room temperature is increased to
88 °F (31 °C) or higher, fan mode is switched
from HIGH to LO.
Low Fan Mode
When the FAN MODE button on the control panel is pressed again, the microprocessor turns on
“FAN LO” “COOL OFF” indication of LCD and activates both the fan on relay and fan mode relay.
This sends line voltage (208/230 VAC) from the fan on relay to the N.C. (normally closed)
contacts of the fan mode relay. This output is connected to the J7 terminal (relay board) where
the low speed wire of the fan motor is connected.
When this button is pressed again, fan stops.
I001914
80 °F
(27 °C)
Room Temperature
(High)
(LO)
Condenser Fan
88 °F
(31 °C)
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Movincool Office Pro 12 / Office Pro 18 / Office Pro 24 Owner's manual

Category
Split-system air conditioners
Type
Owner's manual
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