Blodgett Mark V Installation and operating manual

MARK V SERIES
CONVECTION OVEN
SERVICE AND REPAIR MANUAL
BLODGETT OVEN COMPANY
www.blodgett.com
44 Lakeside Avenue, Burlington, Vermont 05401 U A Telephone (802) 658Ć6600 Fax: (802)864Ć0183
PN 33144 Rev F (7/02)
E 2002 - G. . Blodgett Corporation All rights reserved.
Duplication of the information in this manual is prohibited without the consent of the Blodgett ervice Department.

TABLE OF CONTENTS
i
1. INTRODUCTION
Oven pecifications 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. OPERATION
equence of Operations 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cook Only - 18459 Rev D 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CE Approved Cook Only - 33339 Rev C 2-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cook and Hold - 18791 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
olid tate Digital - 30070 Rev B 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CE Approved olid tate Digital - 33345 Rev C 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fan Delay with Pulse Plus - 18466 Rev D 2-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Humidaire - 1846 Rev M 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intellihold and Intelliplus - 22027 Rev A 2-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intellitouch - 19361 Rev A 2-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blodgett IQ Control - 33078 Rev A 2-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3. CALIBRATION AND ADJUSTMENT
Doors 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Blower witch 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
olid tate Manual 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
olid tate Digital Control 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intellihold and Intelliplus Controls 3-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intellitouch Control 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intellitouch II Control 3-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blodgett IQ Control 3-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blodgett IQ2T Control Factory Level Programming 3-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
IQ VVCĆ208 Control 3-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probe Resistance vs Heating Elements 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Probe Resistance vs Temperature 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4. TROUBLESHOOTING
Heat ystem 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Display Error Codes 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intellitouch 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intellihold and Intelliplus 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blodgett IQ Control 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TABLE OF CONTENTS
ii
5. PARTS REPLACEMENT
Door Assembly 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door Arm upport Assembly 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Window Assembly 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compartment Liner Bottom 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Motor and Blower Assembly 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blower Wheel 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Motor 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Components 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb and Capillary Thermostat 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Components Located in the Control Module 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door witch 5-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INTRODUCTION
CHAPTER 1

MARK V
1-1
OVEN SPECIFICATIONS
ELECTRICAL SPECIFICATIONS
In tallation within the U.S. and Canada
ingle phase models require a 60 Hz,
208/240VAC, 3 wire service consisting of L1, L2
and ground. Three phase models require a 60 Hz,
208/240/440/480, 4 wire service consisting of L1,
L2, L3 and ground. Wiring from the power source
to any of the single phase units must be a minimum
of #6 AWG copper stranded wire. Wiring from the
power source to the 208/240 three phase units
must be a minimum of #8 AWG copper stranded
wire. Wiring from the power source to the 440/480
three phase units must be a minimum of #12 AWG
copper stranded wire.
General Export In tallation
ingle phase models require a 50 Hz,
220/240VAC, 3 wire service consisting of L1, L2
and ground. Three phase models require a 50 Hz,
415/240 or 380/220 VAC, 5 wire service consisting
of L1, L2, L3, neutral and ground. Use 90_C wire
and size according to local codes.
CE approved in tallation
ingle phase models require a 50 Hz, 230VAC 3
wire service consisting of L1, neutral and ground.
Three phase models require a 50 Hz, 400/230VAC,
5 wire service consisting of L1, L2, L3, neutral and
ground. Use 90_C wire and size according to local
codes.
ELECTRICAL SPECIFICATIONS (per ection)
KW Hz Volt Pha e Amp Electrical Connection
(ii i )
L1 L2 L3 N (minimum ize)
U.S. and Canadian in tallation
11.0 60 208 1 51 - 51 - 6 AWG
11.0 60 208 3 31 29 29 - 8 AWG
11.0 60 220Ć240 1 44 - 44 - 6 AWG
11.0 60 220Ć240 3 26 24 24 - 8 AWG
11.0 60 440 3 15 14 14 - 12 AWG
11.0 60 480 3 14 13 13 - 12 AWG
General Export in tallation
11.0 50 208 3 18 18 18 4 ize per local code
11.0 50 220Ć240 1 48 - - 48 ize per local code
11.0 50 220/380 3 18 16 16 2 ize per local code
11.0 50 240/415 3 18 14 14 4 ize per local code
11.0 50 230/400 3 18 15 15 3 ize per local code
CE in tallation
11.0 50 400 3N 18 15 15 3 ize per local code

OPERATION
CHAPTER 2

MARK V
2-1
SEQUENCE OF OPERATIONS
NOTE: The following ins ruc ions represen he mos common con rollers. For ques ions regarding o her
op ions call he Blodge Service Depar men a (800)331Ć5842.
COOK ONLY - 18459 REV D
Component Reference
NOTE: Refer o FIGURE 1 page 2-2 for compoĆ
nen loca ions.
1. MODE ELECTOR WITCH
2. COOK TIMER
3. DOOR WITCH
4. TEMPERATURE CONTROL BOARD
5. AXIAL FAN
6. CONV ECTION FAN MOTOR
7. TEMPERATURE PROBE
8. OLID TATE POTENTIOMETER
9. CENTRIFUGAL WITCH
10. COOK LIGHT
11. ELEMENT CONTACTOR
12. HEATING ELEMENT
13. 50 WATT LAMP
14. LIGHT WITCH
15. TIMER MOTOR
16. BUZZER
Operation
1. Turn the mode selector switch (1) to the cook
position. Power goes to terminal #1 of the
cook timer (2), one side of the door switch (3),
terminal #8 of the temperature control board
(4) and the axial fan (5).
2. If the doors are closed the door switch (3)
should also be closed sending power to termiĆ
nal #6 of the temperature control board (4)
and to the convection fan motor (6).
NOTE: This mo or has a buil in cen rifugal
swi ch (9) ha closes when he mo or
reaches full speed. If found faul y do
no bypass, he whole mo or should be
replaced.
3. On a call for heat from the temperature control
circuit, a circuit is completed between termiĆ
nals #6 and #7 of the temperature control
board (4).
NOTE: The empera ure con rol circui conĆ
sis s of he empera ure probe (7), he
empera ure con rol board (4) and he
solid s a e po en iome er (8).
Power is sent out of terminal #7 to one side of
the centrifugal switch (9). If the convection fan
motor (6) is at full speed the centrifugal switch
(9) closes sending power to the cook light (10)
and one side of the element contactor (11).
When the contactor closes the heating eleĆ
ments (12) power up.
4. The 50 watt lamps (13) only receive power when
the light switch (14) is activated. These lamps
are 115 volt and are wired in series parallel.
5. When the cook timer (2) is set for a time a cirĆ
cuit is made between terminals #1 and #2
powering up the timer motor (15). At the expiĆ
ration of the set time the switch in the cook timĆ
er (2) toggles from 1-2 to 1-4 powering up
the buzzer (16).
NOTE: Pu he imer in he home posi ion o siĆ
lence he buzzer.
NOTE: Turn he mode selec or swi ch o cool
down o bypass he door microswi ch. This
allows he convec ion fan mo or o opera e
even when he doors are open.
NOTE: This oven may be conver ed from single o
hree phase, however, con ac ors mus be
changed due o he difference in amp
draw. Reference de ail inse in FIGURE 1.
NOTE: The resis ive values for he probes used in
his oven have descending empera ure
coefficien s. As he empera ure increases
he resis ive values decrease.
NOTE: Reference page 4-2 of he Troubleshoo Ć
ing sec ion for he resis ive values of he
hea ing elemen s. The reading should be
aken in a cold s a e.

OPERATION
2-2
1
2
3
4
15 16
9
8
7
14
6
12
13
5
10
11
FIGURE 1

MARK V
2-3
CE APPROVED COOK ONLY - 33339 REV C
Component Reference
NOTE: Refer o FIGURE 2 page 2-4 for compoĆ
nen loca ions.
1. MODE ELECTOR WITCH
2. COOK TIMER
3. DOOR WITCH
4. TEMPERATURE CONTROL BOARD
5. AXIAL FAN
6. CONVECTION FAN MOTOR
7. TEMPERATURE PROBE
8. OLID TATE POTENTIOMETER
9. CENTRIFUGAL WITCH
10. HIGH LIMIT WITCH
11. ELEMENT CONTACTOR
12. COOK LIGHT
13. HEATING ELEMENT
14. 50 WATT LAMP
15. LIGHT WITCH
16. TIMER MOTOR
17. BUZZER
Operation
1. Turn the mode selector switch (1) to the cook
position. Power goes to terminal #1 of the
cook timer (2), one side of the door switch (3),
terminal #8 of the temperature control board
(4) and the axial fan (5).
2. If the doors are closed the door switch (3)
should also be closed sending power to termiĆ
nal #6 of the temperature control board (4)
and to the convection fan motor (6).
NOTE: This mo or has a buil in cen rifugal
swi ch (9) ha closes when he mo or
reaches full speed. If found faul y do
no bypass, he whole mo or should be
replaced.
3. On a call for heat from the temperature control
circuit, a circuit is completed between termiĆ
nals #6 and #7 of the temperature control
board (4).
NOTE: The empera ure con rol circui conĆ
sis s of he empera ure probe (7), he
empera ure con rol board (4) and he
solid s a e po en iome er (8).
Power is sent out of terminal #7 to one side of
the centrifugal switch (9). If the convection fan
motor (6) is at full speed the centrifugal switch
(9) closes sending power to one side of a high
limit switch (10), if the high limit is closed then
power will be sent to one side of the contactor
(11) and an indicator light (12). When the conĆ
tactor closes the heating elements (12) power
up.
4. The 50 watt lamps (13) only receive power when
the light switch (14) is activated.
5. When the cook timer (2) is set for a time a cirĆ
cuit is made between terminals #1 and #2
powering up the timer motor (15). At the expiĆ
ration of the set time the switch in the cook timĆ
er (2) toggles from 1-2 to 1-4 powering up
the buzzer (16).
NOTE: Pu he imer in he home posi ion o siĆ
lence he buzzer.
NOTE: Turn he mode selec or swi ch o cool
down o bypass he door microswi ch. This
allows he convec ion fan mo or o opera e
even when he doors are open.
NOTE: This oven may be conver ed from single o
hree phase, however, con ac ors mus be
changed due o he difference in amp
draw. Reference de ail inse in FIGURE 2.
NOTE: Reference page 4-2 of he Troubleshoo Ć
ing sec ion for he resis ive values of he
hea ing elemen s. The reading should be
aken in a cold s a e.

OPERATION
2-4
1
15
3
6
14
4
2
17
11
12
10
9
5
13
7
8
FIGURE 2