Cleveland 21CGA5 Service Manual

Statement of Responsibilities
This document is for use by experienced and trained Qualified Cleveland Range, LLC Authorized Service
Representatives who are familiar with both the safety procedures, and equipment they service.
Cleveland Range, LLC assumes no liability for any death, injury, equipment damage, or property damage
resulting from use of, improper use of, or failure to use the information contained in this document.
Cleveland Range, LLC has made every effort to provide accurate information in this document, but
cannot guarantee that this document does not contain unintentional errors and omissions.
The information in this document may be subject to technical and technological changes, revisions, or
updates.
Cleveland Range, LLC assumes no liability or responsibility regarding errata, changes, revisions, or
updates.
Qualified Cleveland Range, LLC Authorized Service Representatives are obligated to follow industry
standard safety procedures, including, but not limited to, OSHA regulations, and disconnect / lock out /
tag out procedures for all utilities including steam, and disconnect / lock out / tag out procedures for gas,
electric, and steam powered equipment and / or appliances
All utilities (gas, electric, water and steam) should be turned OFF to the equipment and locked out of
operation according to OSHA approved practices during any servicing of Cleveland Range equipment
Qualified Cleveland Range, LLC Authorized Service Representatives are obligated to maintain up-to-date
knowledge, skills, materials and equipment.
Cleveland Range, LLC
Ph: 1-216-481-4900
Fx: 1-216-481-3782
1333 East 179th St., Cleveland, Ohio, U.S.A. 44110
Visit our Web Site at www.clevelandrange.com
CLEVELAND RANGE 21CGA5
SEQUENCE OF OPERATIONS
STEAMCRAFT ULTRA 5
Mechanical Timer
1. To turn the unit on, depress the red on/off rocker switch.
2. 115 VAC is sent to the red indicator light.
3. 115 VAC is sent to the normally open drain valve closing it.
115 VAC is sent through the normally closed water level (top) float switch to the coil of the
R1 relay
• The R1 relay energizes
• The R1 contacts close 115 VAC is sent to the fill solenoid
5. The fill solenoid opens and the generator fills through the drain valve.
• The water fills to the normally open low water cut off float switch (bottom float).
• The float is lifted by the water and the switch closes.
• The water fills to the normally closed water level (top) float switch.
• The float is lifted by the water and the switch opens.
• With the switch opened 115 VAC is removed from the coil of the R1 relay.
• The R1 relay deenergizes and 115 VAC is removed from the fill solenoid and
the unit stops filling
• When the water level drops, the operational water float drops closing the switch
and energizing the R1 relay
• The R1 contacts close 115 VAC is sent to the fill solenoid. The unit fills back
to the proper level.
4.
6. When the timed/manual switch is in the timed position and time is on the timer
• 115 VAC is sent from the timer to the R3 relay coil.
• The R3 relay energizes
• The R3B contacts close sending 115 VAC to the timer motor
• The R3A contacts close sending 115 VAC through the optional door switch to the
condensate valve and the primary of the 24 VAC ignition transformer.
• 115 VAC is sent to the #4 terminal on the clean light timer.
• The clean light timer counts down from the set time (time is set by dip switches on
timer)
• 115 VAC is sent to the amber light in the clean light switch.
• The light is turned off and the clean light timer is reset by depressing the clean light
timer switch.
• With the sight glass filled the L.W.C.O. float will be raised and the normally open
switch is closed.
• 24 VAC is supplied from the secondary of the transformer through the L.W.C.O. float
switch to the ignition module.
•
•
•
Spark is sent to the igniter.
24 VAC is sent to the gas valve.
• The gas valve opens to the first stage (.7” W.C. natural gas and 2.25” LP)
allowing gas to the burner.
• 6 to 8 seconds later the valve opens to the second stage (3.5” W.C. natural gas
and 10” W.C. LP)
When the gas is ignited the ignition module detects at least 1.5 micro-amps DC
through the flame and burner ground wire.
• If the 1.5 micro-amps DC is not detected in 4 seconds the ignition module locks
out and has to be reset by removing 24 VAC to the module. This can be done by
turning the steamer on and off.
7. With water in the generator and flame heating it, steam is made and directed into the cooking
chamber.
8. The steamer will continue to steam until the timer runs down.
• When the timer times down 115 VAC is removed from the R3 relay.
• The R3 relay de energizes.
• The R3B contacts open removing 115 VAC from the timer motor
• The R3A contacts open removing 115 VAC from the heat circuit
• 115 VAC is sent to the 3 second timer
• 115 VAC sent to the buzzer for three seconds.
9. The steamer is turned off by depressing the on/off rocker switch.
• 115 VAC is removed from the heat and timer circuits.
• 115 VAC is removed from the drain valve.
• 115 VAC is sent to the 3-minute timer and water is sent in to the now open drain valve
flushing and cooling the drain.
78
3 2
4
1
115VAC
6
5
L
NO
R1
L
NO
25V
( GND )
L.W.C.O.
FLOAT
DOOR
SWITCH
(SCS OPT)
R3
TIMED
C
B
A
WHT
DESCALE INDICATOR
& RESET SWITCH
FILL VALVE
R1
BUZZER
3 SEC TIMER
2
24V
L106495 P
TRANSFORMER
120V
CONDENSER
VALVE
DRAIN VALVE
REMOVE WIRE A-B & C-D
WITH INTERMITTENT
BLOWDOWN OPTION
R2
( OPT )
1
3
OPERATIONAL
WATER FLOAT
NO
RINSE VALVE
A
STEAMCRAFT 5.1 GAS, MECHANICAL TIMER
BLK
DESCALE
TIMER
3
2
R
D
BLOWDOWN
TIMER (OPT)
NO
C
MANUAL
POWER SWITCH
3 MIN TIMER
1
TIMED
R3A
NO
R3B
C
C NO
MOTOR
NC
3
1
R2
3
1
R2
NO
25V
VALVE VALVE
IGNITION MODULE
IGNITOR
( OPT )
C
HEAT STANDBY
TIMER
2
NC
C
( OPT )
2
ELECTRO-MECHANICAL
TIMER
MANUAL
C
IGNITOR
GND
GAS VALVE
STEAMCRAFT 5.1 GAS w/MECHANICAL TIMER
BLK
LT BLU
3
2
1
17
18
LT BLU
WHT
BLK
WHT
BLK
BLK
ORN
C
NO
PNK
13
BLK
21
BLK
YEL
BRN
9
RED
ORN/BLK
19
6
BLU
PNK
WHT
WHT/BLU
WHT/BLK
NC
LT BLU
R3
YEL
TB
10
23
25V
WHT
VALVE
VALVE
REMOVED W / OPTIONAL
DOOR SWITCH ( SCS )
25
BLK
GROUND
25V
LT/BLU
2
ORN
WHT/BRN
RED
1
LT BLU
ORN
RED
BLK
BLU
BLK
YEL
YEL
8
R1
BRN
WHT/BLU
TAN
WHT/BLK
WHT/GRA
16
ORN
BLU
WHT/GRA
3 2
4
4
78
TAN
3
2
1
1
6
5
ORN
YEL
2
11
7
3
1
RINSE
FILL
12
12
12
13
20528 - TRANSFORMER 24V
104224 - TIMED/MANUAL SWITCH
14
20304 - GROUND LUG
3
20478 - 3 MIN TIMER
15
106461 - LINE CORD
4
19994 - DESCALE INDICATOR RESET SW.
16
1065681150 - IGNITION CABLE
5
106911 - DESCALE TIMER
17
20477 - 3 SEC TIMER
6
108880 - DOOR SW ( SCS ) MAGNETIC
18
110198 - MOTORIZED TIMER
( TO COND SOL )
7
106580 - HEAT STANDBY TIMER
19
41350 - BUZZER
RED
8
44168 - TERMINAL BLOCK
20
106541 - INTMT BLOWDOWN TIMER
9
103726 - FLOAT ASSEMBLY
21
105966 - RELAY
WHT
BLK
ORN
BLK
2
1
WHT
RED
RED
R2
GRN
3
WHT
RED
RED
GRN
19993 - POWER SWITCH
2
ORN
20
BLK
WHT
1
10
21
GRN
11
GRN
15
24
PARTS LIST
8
2
BLU
COND
INTERMITTENT BLOWDOWN OPTION
N
22
GRN
TAN
RED
( THRU SCS, IF INSTALLED )
WHT/BLU
BLU
RED
ORN
WHT
WHT/RED
7
YEL
5
WHT
BLU
BLU
GRN
BLK
3
2
1
RED
3
14
WHT
WHT/BLK
N
GRA
WHT/GRA
WHT/BLK
BRN
BLU
10 44164 - TERMINAL BLOCK
22
300092 - IGNITOR
11 22221 - DRAIN VALVE
23
03546 - IGNITION MODULE
12 22218 - WATER SOLENOIDS
24
106400 - GAS VALVE ( NAT )
25
1064001 - GAS VALVE ( LP )
105966 - RELAY
P106495 P
Descaling Procedure-SteamCraft Ultra and Gemini Series
How Much DISSOLVE to Use
Model
Dissolve
Ultra 3
1/2 Gallon
Ultra 5
1 Gallon
Ultra 10 (Elec.)
1 Gallon (ea.)
Ultra 10 (Gas)
1½ Gallon
Gemini 6 & 10
1 Gallon (ea.)
6. Let the descaler soak in generator for
approximately one hour:
7. After one hour, turn the unit power
Off: This will drain and rinse the generator
for about 3 minutes.
1. Turn the unit OFF and open the
doors:
This will drain and rinse the generator for about
3 minutes.
2. Turn the unit power back On:
The generator will begin to refill with water.
3. Select Timed with the Timed/Manual
switch:
DO NOT start the timer, since you do not want
to heat the water during descaling. Leave the
doors open.
4. Remove descaling port cap and add
with the specified amount of
DISSLOVE: (See chart above)
Do this while the unit is refilling. The generators
can take-up to 8 minutes to refill.
5.
After refill has stopped, add extra tap
water into the descaling port until
liquid is seen entering the cooking
cabinet. Note: Ultra 10 gas will have liquid
coming out of the drain,
Adding extra water when descaling will raise the
descaling solution higher than the normal fill level,
allowing the DISSOLVE to work on sensors and
surfaces above the water line
Note: Some SteamCraft Ultra models (the
electric powered Ultra 10 and Gemini 6 and 10,
for example) have two generators and two
descaling ports. Both units should be descaled
at the same time, using this procedure
8. After the 3-minute drain cycle
completes, turn the unit back ON. After
the filling has stopped, add water until
liquid enters the cooking compartment (or
drain for the ultra 10 gas), and then turn
the unit OFF. This will drain and flush any
residue from the water level control
assembly. Replace descaling cap.
9. After the 3 minute drain cycle
completes, Turn the unit ON and set
the Timer for 20 minutes: Make sure the
Time/Manual switch is in the timed setting
and the doors are closed.
10. When the timer times out (after 20
minutes) turn the power Off:
This will drain and rinse the generator for
about 3 minutes.
This ends the descaling procedure. You can
now turn the unit back on and resume normal
startup and cooking operations.