Service Manual

Service Manual
Commercial Refrigerator
Service Manual
SOLID DOOR TOP MOUNT REACH-IN
PTM49R
Please read this manual completely before attempting to install or operate this equipment.
TABLE OF CONTENTS
1. FEATURE CHART
1-1. OUTSIDE DRAWING AND MEASUREMENT FOR PTM49R
2. WIRING DIAGRAM
2-1. REFRIGERATOR (2 DOORS): PTM49R
3. PARTS DETAILS
3-1. TOP PANEL
3-2. REFRIGERATION COMPARTMENT
3-3. DOOR
3-4. COOLING COMPARTMENT
4. MAIN COMPONENTS
4-1. COMPRESSOR
4-2. COMPRESSOR RELAY
4-3. CONDENSER DRYER
4-4. CAPACITOR
4-5. EVAPORATOR FAN MOTOR
4-6. CONDENSER FAN MOTOR
4-7. EVAPORATOR DEFROST HEATER
4-8. LAMP
4-9. THERMOSTAT
5. ELECTRONIC CONTROLLER INSTRUCTION
5-1. REFRIGERATOR CONTROLLER
5-1-1. DIXELL XR20C PARAMETER FOR REFRIGERATOR PTM49R
5-1-2. HOW TO USE THE CONTROLLER
6. REPLACEMENT OF MAIN COMPONENTS
6-1. BOTTOM PANEL PARTS
6-2. REFRIGERATION COMPARTMENT PARTS
6-3. CONDENSING UNIT
1. FEATURE CHART
1-1. OUTSIDE DRAWING OF PTM49R
2. WIRING DIAGRAM
2-1. PTM49R
3. PARTS DETAILS
3-1. TOP PANEL
THERMOSTAT
MAIN SWITCH
DOOR SWITCH
LOCK
3-2. REFRIGERATION COMPARTMENT CYCLE ASSEMBLY
CONDENSER FILTER DRIER
CONDENSER FAN MOTOR WATER PAN
COMPRESSOR
DRAIN PAN
CONDENSER FAN MOTOR ASSEMBLY
FAN COVER
CONDENSER FAN MOTOR BLADE
CONDENSER FAN MOTOR
3-3. DOOR
GASKET
Magnetic gasket can be replaced without any tools.
3-4. COOLING COMPARTMENT
Circle Fan Cover
Evaporator Fan Motor Blade
Evaporator Fan Motor
Fan Cover
Evaporator
Evaporator Fan
Defrost Heating Element
Fan Support
4. MAIN COMPONENTS
4-1. COMPRESSOR
MODEL
Refrigerant
Voltage
Comp.
Model
Part code
PTM49R
R-134a
115V/60Hz
NE2130Z
54R.15
4-2. COMPRESSOR RELAY
PTM49R
Voltage
Relay
Model
Part code
115V / 60Hz
HLC-1XT04XA
27F.03
4-3. CONDENSER DRYER
MODEL
Refrigerant
Spec.
Part code
PTM49R
R-134a
XH-9
25g
GN1410TN.14
4-4. CAPACITOR
MODEL
PTM49R
Voltage
115V / 60Hz
Running
X
Starting
378-454μf
4-5. EVAPORATOR FAN MOTOR
MODEL
PTM49R
Voltage
115V / 60Hz
Motor
CA27-04/C20
Model
Part code
27R.30
4-6. CONDENSER FAN MOTOR
MODEL
PTM49R
Voltage
115V / 60Hz
Motor
CA27-04/C19
Model
Part code
27R.32
4-7. EVAPORATOR DEFROST HEATER
MODEL
PTM49R
Voltage
115V / 60Hz
Spec.
X
Part code
X
4-8. LAMP BULB
MODEL
PTM49R
Voltage
115V/60Hz
Spec.
Part code
25W
27R.29
4-9. MAIN PCB
MODEL
PTM49R
Voltage
115V / 60Hz
Part code
Micom
code
XR20CX
27R.10
5. ELECTRONIC CONTROLLER INSTRUCTION
5-1-1
DIXELL XR20C PARAMETER FOR
PTM49R
NO.
Label Name
NO.1
Range
Hidden
Par.
Defa
ult
℃
℉
℃/℉
1
Set
Set point
Differential
2
LS-US
-5/23
0
32
0.1-25.5℃/1-
2/35.
6
2.5
5
Yes
-50/58
-2
28
Yes
110/
230
10
50
0/32
1
-1
Y
Y
Y
Yes
0/32
0
0
Yes
0
2
2
1
2
2
Hy
255℉
Minimum set point
3
-50℃-SET/-
Ls
58℉-SET
Maximum set point
4
SET110℃/SET-
Us
230℉
5
Ot
Thermostat
calibration
probe
-12-12℃/120-120℉
6
7
P2P
OE
Evaporator
presence
probe
Evaporator
calibration
probe
n=not
pres. ;y=pres
.
-12-12℃/120-120℉
9
Ods
AC
10
CCt
Continuous
duration
cycle
0.0-24.0h
Yes
0.0
0.0
0.0
11
COn
Compressor ON time with
faulty probe
0-255min
Yes
15
10
10
12
COF
Compressor OFF
with faulty probe
0-255min
Yes
30
10
10
13
CF
Temperature
measurement unit
℃/℉
Yes
℃/℉
℃
℉
8
Outputs delay at start up
0-255min
Anti-short cycle delay
0-50min
time
Resolution
in=integer;
dE
=
dec .point
Lod
Probe displayed
P1;P2
termination
EdF
Defrost
setting
Pb=by
temperature;
nP=by time
Defrost
temperature
termination
14
rES
15
16
17
dtE
Yes
-50-50℃/-58-
DE
DE
DE
P1
P1
P1
Pb
Pb
Pb
8/46.
4
7
41
122℉
Interval between defrost
cycles
1-120ore
6
6
6
MdF
(Maximum)
defrost
0-255min
30
20
20
21
DFd
Display during defrost
rt, it, Set, DEF
Yes
Set
Set
set
22
dAd
MAX display delay after
defrost
0-255min
Yes
30
30
30
25
dAF
Defrost delay after fast
freezing
0-23h
50’
n
Yes
0.0
0
0
Temperature
configuration
RE=related
to
set;
Ab=absolute
Yes
Ab
re
re
110/
230
50
90
-50/58
-40
80
18
IdF
19
30
Alc
length
for
Alarm
MAX. temperature alarm
31
SET110℃/SET-
ALU
230℉
MIN. temperature alarm
32
-50℃-SET/-
ALL
58℉-SET
33
Ald
Temperature alarm delay
0-255min
Yes
15
0
0
34
dAO
Delay
of
temperature
alarm at start up
0-23h n 50’
Yes
1.30
1
1
35
i1P
Digital input polarity
OP=opening
CL=closing
CL
CL
CL
EAL=extern.
alarm; bAL=
lock
regulation;
PAL=press.
switch; dor=
door
dor
dor
dor
36
i1F
Digital input configuration
switchdEF=d
efrost;
LHt
=disabled;
Htr=Coolingheating
37
did
Digital input alarm delay
0-255min
38
Nps
Number of activation of
pressure
0-15
Compressor status with
open door
no,Fan=
normal; CPr=
comp.OFF;
F-C=
Compr.OFF &
fan.OFF
Kind of probe
Ptc;ntc
39
odc
40
Pbc
41
Room probe display
-
Evaporator probe display
43
dp1
dp2
rEL
44
Ptb
42
15
15
15
Yes
15
15
15
Yes
no
no
no
ntc/
Ptc
ntc
ntc
Yes
P1
P1
P1
-
Yes
P2
P2
P2
Software release
-
Yes
4.2
4.2
4.2
Map code
-
Yes
83
83
83
5-1-2.
1. FRONT PANEL COMMANDS
To display target set point, select a parameter or confirm an operation in programming
mode.
To start a manual defrost
To view the last alarm occurrence. In programming mode, it browses the parameter
codes or increases the display value
To view the last alarm occurrence. In programming mode, it browses the parameter
codes or decreases the display value
KEY COMBINATION
To lock & unlock the keyboard
To enter in programming mode
To return to the room temperature display
1.1 Function of LEDS
2. MAIN FUNCTIONS
2.1 HOW TO VIEW THE SET POINT
1. Push and immediately release the SET key: the display will show the set point value.
2. Push and immediately release the SET key or wait for 5 seconds to display the
sensor value again.
2.2 HOW TO CHANGE THE SET POINT
1. Push the SET key for more than 2 seconds to change the set point value.
2. The value of the set point will be displayed and the
LED starts blinking.
3. To change the set value, push the
or
key within 10s.
4. To set new point value, push the SET key again or wait 10s.
2.3 HOW TO START A MANUAL DEFROST
Push the
key for more than 2 seconds and a manual defrost will start
2.4 HOW TO LOCK THE KEYBOARD
1. Hold the
and
keys for more than 3s.
2. The “POF” message will be displayed and the keyboard will be locked. At this point, it will be
possible only to see the set point or the MAX or Min temperature stored.
3. If a key is pressed more than 3s the ”POF” message will be displayed.
2.5 HOW TO UNLOCK THE KEYBOARD
Hold the
and
keys together for more than 3s, till the “POF” message is displayed.
3. ALARM SIGNALS
HOW TO VIEW THE ALARM AND
RESET THE RECORDED ALARM
1. Hold the
or
key to
display the alarm signals.
2. When the signal is displayed, hold
the SET key until the “rst” message
is displayed. Push the SET key
again. The “rst” message will start
blinking and the normal temperature
will be displayed again.
6. REPLACEMENT OF MAIN COMPONENTS
6-1. FRONT PANEL PARTS
UNSCREW THE FRONT PANEL
A. LIFT THE PANEL
You can change the door switch, lock main switch and the thermostat here
6-2. REFRIGERATION COMPARTMENT PARTS
6-2-1. UNSCREW THE SENSOR CLIP AND TAKE THE SENSOR OUT FROM THE CLIP
6-2-2. UNSCREW THE CIRCLE FAN COVER
6-2-3. PULL DOWN THE CIRCLE FAN COVER.
6-2-4. UNSCREW THE FAN SUPPORT
6-2-5. CHANGE THE DEFROST HEATING ELEMENT
a. UNHOOK THE EVAPORATOR FROM ITS CASING
b. TAKE OFF THE ELEMENT AND REPLACE IT.
6-3. CONDENSING UNIT
6-3-1. TAKE OFF THE BOTTOM PANEL OF THE UNIT.
6-3-2. UNSCREW THE UNIT BOARD. YOU CAN PULL THE UNIT BOARD OUT FOR ANY
REPAIRS OR CLEANING.
CAUTION: BE CAREFUL OF ELECTRIC SHOCK
CAUTION: MAKE SURE THE POWER SUPPLY IS CUT OFF
BEFORE ANY SERVICE IS PERFORMED
CAUTION: CONDENSING UNIT MAY BE VERY HOT. BE SURE
IT IS COOL BEFORE ANY SERVICE IS PERFORMED
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