Crown ECX-16 User manual

MANUAL 10063R4
INSTALLATION & OPERATION
MANUAL
Electric Cabinet Base Convection Steamer
ECX-16 ECX-24
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read
the installation, operating and maintenance instructions thoroughly before installing or servicing this equipment.
IMPORTANT FOR FUTURE REFERENCE
Please complete this information and retain this
manual for the life of the equipment:
Model #: ___________________________
Serial #: ___________________________
Date Purchased: ____________________
CROWN FOOD SERVICE EQUIPMENT
A Middleby Company
70 Oakdale Road, Downsview (Toronto) Ontario, Canada, M3N 1V9
Telephone: [phone] www.crownsteamgroup.com
Printed in Canada

INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
IMPORTANT NOTES FOR INSTALLATION AND OPERATION
This is the safety alert symbol. It is used to alert you to potential
personal injury hazards. Obey all safety messages that follow this
symbol to avoid possible injury or death.
WARNING: Improper installation, operation, adjustment, alteration,
service or maintenance can cause property damage, injury or death.
Read the installation, operating and maintenance instructions
thoroughly before installing, operating or servicing this equipment.
CAUTION: Operating, testing, and servicing should only be
performed by qualified personnel.
NOTICE: Contact the factory, the factory representative or local
service to perform maintenance and repairs.
Do not attempt to operate this unit in the event of power failure.
Intended for commercial use only. Not for household use.
This manual should be retained for future reference.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
TABLE OF CONTENTS
DESCRIPTION PAGE
Important Notes for Installation and Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.0 ServiceConnections . ....................................................4
2.0 Introduction . ...........................................................6
3.0 InstallationInstructions ....................................................7
4.0 OperatingInstructions ...................................................10
5.0 Boilers with CSD-1 Controls .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.0 PeriodicMaintenance ....................................................15
7.0 CleaningInstructions ....................................................18
8.0 Adjustments ...........................................................19
9.0 Troubleshooting ........................................................21
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
1.0 SERVICE CONNECTIONS
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
1.0 SERVICE CONNECTIONS
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
2.0 INTRODUCTION
DESCRIPTION
Models ECX-16 and ECX-24 are convection steamers mounted on cabinet base and an electric
steam boiler. ECX-16 steamer has a pan capacity of 16 (2½”) pans. ECX-24 steamer has a
pan capacity of 24 (2½”) pans.
BASIC FUNCTION:
The sequence of operation is as follows:
1. Turn on the main power switch. A green pilot light will indicate main power is on and steam
generating will begin. In approximately 20 minutes, sufficient amount of pressurized steam
will have been generated in the heat exchanger and the READY pilot light will come on.
OFF shuts off the power supply to the boiler and opens the automatic blowdown valve, if so
equipped, emptying the boiler and releasing water and steam to the drain. The manual
blowdown valve will have to be opened to drain if not equipped with automatic blowdown
valve.
2. Boiler pressure gauge should read 9 - 11 psi during operation, 0 psi during shutdown.
3. The compartment cooker is ready for use when the READY light is on. Place pans of food
to be cooked into compartment(s) and close door(s).
4. Set timer(s) to cook time desired. Cooking will commence and cooking time may be
interrupted at any time by opening door(s) and resumed again by closing door(s).
5. The buzzer will sound indicating the end of the cooking cycle and that steam has stopped
entering the compartment(s). The COOKING pilot will go off and the READY light will come
on. Turn the timer(s) to the OFF position to stop the buzzer.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
3.0 INSTALLATION INSTRUCTIONS
GENERAL
The electric boiler is designed to ASME Code and approved as a steam heating boiler restricted
to operation at pressure not to exceed 15 psi. Boilers are electrically rated as shown on page 4.
Boiler may have optional CSD-1 controls.
INSTALLATION
UNPACKING
Immediately after unpacking, check for possible shipping damage. If the appliance is found to
be damaged, save the packaging material and contact the carrier within 15 days of delivery.
Before installing, verify the electrical rating agrees with the specification on the rating plate.
LOCATION
Position the appliance in its installation location. Check that there are sufficient clearances to
service the controls, door swing, etc. Also adequate clearance must be left for making the
required supply and drain connections.
Allow enough space between any other piece of equipment or wall for service access. Service
to the controls may be required on the left and/or right side panels of the cabinet.
INSTALLATION CODES AND STANDARDS
The appliance must be installed in accordance with:
In Canada:
Provincial and local codes, or in the absence of local codes, with the Canadian Electric Code,
CSA C22.1 (latest edition). Copies may be obtained from the Canadian Standards Association,
178 Rexdale Blvd., Etobicoke, Ontario, Canada, M9W 1R3.
In the U.S.A.:
State and local codes, or in the absence of local codes, with the National Electrical Code,
ANSI/NFPA-70 (latest edition). Copies may be obtained from The National Fire Protection
Association, Batterymarch Park, Quincy, MA, USA, 02269.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
3.0 INSTALLATION INSTRUCTIONS (Continued)
LEVELING AND ANCHORING THE CABINET
1. Place appliance in the installation position.
2. Place a carpenter’s level on top of the appliance and turn the adjustable feet to level side-
to-side and front-to-back.
3. Mark hole locations on the floor through the anchoring holes provided in the flanged
adjustable feet.
4. Remove appliance from installation position and drill holes in locations marked on the floor.
(See installation diagram on page 4.) Insert proper anchoring devices (not supplied).
5. Place appliance back in the installation position.
6. Place carpenter’s level on top appliance and re-level side-to-side and front-to-back.
7. Bolt and anchor appliance securely to the floor.
8. Seal bolts and flanged feet with silastic or equivalent compound.
ELECTRICAL CONNECTIONS
WARNING: Electrical and grounding connections must comply with
the applicable portions of the National Electrical Code and/or other
local electrical codes.
WARNING: Disconnect electrical power supply and place a tag at
the disconnect switch to indicate you are working on the circuit.
When making electrical connections, use copper wire suitable for at least 200EF (90EC). The
steamer must be grounded in accordance with the National Electrical Code or applicable local
codes. The wiring diagram is located on the inside of the right panel.
EXHAUST HOOD
An exhaust system should be located directly above the boiler to exhaust steam and heat
generated by the appliance.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
3.0 INSTALLATION INSTRUCTIONS (Continued)
PLUMBING CONNECTIONS (See Page 4 and 5)
WARNING: Plumbing connections must comply with applicable
sanitary, safety, and plumbing codes.
Water Supply Connection
The incoming cold water supply connection, at the rear of the boiler cabinet, requires 3/8"
tubing and water pressure of 25 - 50 psig. A manual shut-off valve must be provided
convenient to the appliance. This valve should be open when the boiler is in operation.
WARNING: If your equipment was supplied with split water lines
and a water treatment system, connect the system to the connection
marked “FILTERED WATER IN” only (Use cold water). Make a
second connection to the “CONDENSER WATER IN” from a cold and
unfiltered water supply.
FAILURE OR MALFUNCTION OF THIS APPLIANCE DUE TO POOR WATER QUALITY IS
NOT COVERED UNDER WARRANTY. SEE WATER QUALITY STATEMENT (PAGE 4, 5).
Drain Connection
The boiler drain (2" IPS) should be piped to a floor drain near the steamer (NOT directly under
the steamer). There should be no solid drain connection; an “open gap” between the boiler and
the floor drain is required.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
4.0 OPERATING INSTRUCTIONS
For CSD-1 equipped boilers, see section 5.0.
BOILER CONTROLS (Inside Cabinet)
Main Power Switch - ON fills the boiler tank and turns the boiler heaters on. You should
allow 20 minutes to fill the tank and generate steam.
- OFF shuts off the boiler heaters and opens the Automatic
Blowdown Valve, emptying the boiler tank and releasing water and
steam to the drain. This should be done daily to remove sediment,
lime, or scale.
Pilot Light - Indicates main power is ON.
Boiler Pressure Gauge - Should read 9 - 11 psig during operation; 0 psig during shutdown.
Water Level Sight Glass - Observe level of water and water quality in the boiler. Murkiness in
the water indicates inadequate water quality; the owner must supply
proper water to the boiler (see page 4).
Water Level Control - While boiler is ON, briefly open the water level control valve once a
day to remove any sediment that might accumulate. (See page 12
for detailed instructions.)
Safety Valve - This valve will release (pop off) if the boiler has too much pressure.
Once a week, this valve should be tripped during operation to make
sure it functions properly.
OPERATION OF THE BOILER
Turn on water and power supply to appliance.
Open cabinet door and turn main power switch ON. Pilot light ignites and water begins to fill
boiler - observe water gauge sight glass to verify that proper water level is reached.
Once the proper water level is reached, the heaters begin to heat the water. Heaters require
about 15 minutes to begin steam generation. The boiler pressure gauge in the cabinet should
indicate steam pressure in a range of 9 to 11 psig.
SHUT DOWN
Turn the Main Power Switch OFF. Open manual drain valve. If unit is supplied with Automatic
Blowdown Valve, it will open, draining the boiler and releasing hot water and steam to the drain.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
4.0 OPERATING INSTRUCTIONS (Continued)
COOKER SECTION
CAUTION: Live steam and accumulated hot water in the
compartment may be released when the door is opened.
Start-up procedures for your steamer must be completed once daily prior to operation. (See
instruction plate or above for boiler start up procedures).
If appliance is equipped with optional - “Load Compensating Timer” a pre-heat thermostat is
installed in each compartment. This allows the compartment to pre-heat to 185EF before the
cooking time starts. Set timer for one minute. Ready light will go out and cook light will come
on; steam will enter compartment. Once compartment has reached the pre-heat temperature
(185EF) the timer will start. After the time selected has elapsed, buzzer will sound indicating the
end of the cooking cycle. Steam generation will cease, Cook light will go out and Ready light
will come on. To silence buzzer turn timer to its off position.
With ready pilot light on, preheat steamer compartment for one minute when the steamer is to
be first used for the day or whenever the compartment is cold.
1. Close compartment doors and set timer to “1 minute”.
2. When buzzer sounds, set timer to the “OFF” position.
3. Steamer is now ready for cooking.
4. With cooking compartment preheated and ready pilot light on, place pans of food to be
cooked into compartment and shut door.
5. Set timer to cooking time desired. Cooking cycle may be interrupted at any time by opening
door and resumed again by closing door.
6. When buzzer sounds, it indicates the end of the cooking cycle and that no more steam is
entering the compartment. Cooking pilot light will go off and ready pilot light will come on.
Buzzer must be shut off by turning the timer to its off position.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
4.0 OPERATING INSTRUCTIONS (Continued)
COOKER SECTION (Continued)
CAUTION: An obstructed drain can cause personal injury or
property damage.
Frequently check that the compartment drain and plumbing is free of all obstructions. Never
place food containers, food or food portion bags in the cooking compartment in such a way that
the compartment drain becomes obstructed.
IMPORTANT: Each compartment is equipped with a removable
drain screen. Frequently check the drain screen for accumulation of
food particles. Should food particles accumulate against, or clog
the drain screen, remove it, clean it thoroughly and then replace it in
its original position.
SHUT DOWN
1. To shut down cooking compartment, set timers to their OFF position and leave doors
slightly open.
2. At the end of the day, the steam supply must be shut off. Open the door of cabinet base
and turn off power switch. Open manual drain valve. If unit is equipped with automatic
blowdown valve, it will open and drain the boiler.
CAUTION: If steam supply does not shut off during blowdown,
immediately discontinue use of appliance and call for service.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
5.0 OPERATION INSTRUCTIONS FOR BOILERS WITH CSD-1 CONTROLS
Start-up Procedure
1. Close the manual blowdown valve, if so equipped.
2. Open cabinet door and turn “ON” power switch.
The green pilot light will come “ON.” Water will begin to enter the boiler. When enough
water has entered the boiler, the (amber) “STANDBY” pilot light will come on.
3. Press the “RESET” switch to begin boiler operation. The “STANDBY” pilot light will go off
and the boiler will begin operation.
Normal Boiler Operating Cycle
Water Fill Cycle
On the initial filling of the boiler, the reset switch must be activated to initialize the safety lockout
circuit. Once the water in the boiler has reached the proper level, the level control will stop the
flow of water to the boiler. As water is consumed in the production of steam, the level control
will supply additional water to the boiler.
Firing Cycle
The elements are operated by pressure sensing devices. On initial operation, the boiler should
reach 14 psi in approximately 15 minutes. At this point, the operating pressure switch will open,
de-energizing the elements. Thereafter the operating pressure switch will cycle the elements
between 9 and 11 psi boiler pressure.
Condensing Drain
A thermostat is located in the drain assembly and is activated by the temperature of steam.
The thermostat operates the cooling solenoid, supplying water to the drain to condense the
steam.
Automatic Blowdown Valve
If the unit has an automatic blowdown valve, it is activated when the main power switch is
activated. The boiler will be drained should the main power switch be turned “OFF.”
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
5.0 OPERATION INSTRUCTIONS FOR BOILERS WITH CSD-1 CONTROLS (Continued)
SAFETY LOCKOUT CONDITIONS
High Temperature Condition
A high temperature safety device is installed on the boiler. Should the temperature exceed the
limit of this device, the boiler will be shut down and put in a state of lockout. The
“TEMPERATURE” pilot light (red), and the “STANDBY” pilot light (amber), will come on.
High Pressure Condition
A high pressure safety switch is installed on the boiler. Should the pressure exceed the limit of
this device, the boiler will be shut down and put into a state of lockout. The “PRESSURE” pilot
light (red), and the “STANDBY” pilot light (amber), will come on. Should this device fail to
operate, the safety relief valve will open.
Low Water Condition
A second low water safety cut off is supplied with the boiler. Should the water level fall below
normal operating levels, the boiler will be shut down and put into a state of lockout. The “LOW
WATER” pilot light (red), and the “STANDBY” pilot light (amber) will come on.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
6.0 PERIODIC MAINTENANCE
WARNING: Disconnect the unit from the power supply before
cleaning or servicing appliance.
Be sure to flush your boiler water level control daily. Failure to follow this procedure can cause
the control to malfunction resulting in serious boiler damage.
The Boiler Water Level Control installed on your boiler requires periodic maintenance. As boiler
water circulates into the float chamber, sand, scale and other sediment may be deposited in the
float chamber. While the chamber has been designed with a large accumulation bowl, it is
necessary to flush the sediment from the chamber by blowing down the control so that the
accumulation of sediment does not interfere with the movement of the float in the control.
Control must be flushed at least once a day.
CAUTION: Protect yourself. When flushing control, hot water and
steam will flow out of the drain.
When flushing control, note water level in gauge glass, allow the boiler to fill if necessary, and
also to come up to temperature.
Before flushing control, note that water level in gauge glass is within operating range and the
boiler pressure is at least 6 psi. While the boiler is being operated, open blowdown valve at
bottom of control by rotating the handle counterclockwise about 1/4 turn to fully open the valve.
Opening the blowdown valve also checks the cut-off operation. Float should drop shutting
steam off, hot water and steam will flow out the drain flushing away sediment.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
6.0 PERIODIC MAINTENANCE (Continued)
CAUTION: If heater does not shut off during blowdown, immediately
discontinue use of appliance and call for service.
Continue draining water for about fifteen (15) seconds, from control until water is clean.
Manually close valve. Recheck gauge glass. If water level has dropped significantly, wait for
the boiler to restore water level and pressure and repeat if necessary.
1. Water level control should be opened daily to blow down sediment and scalant.
2. Observe that the water in gauge glass is clean and clear. Extreme murkiness in water
indicates inadequate water quality.
3. Safety valve should be tripped during operation once a week to assure that it functions
properly.
4. De-scaling is based on water quality and usage.
CAUTION: Take extra caution when blowing down water level
control or tripping safety valve as extreme hot water and live steam
are present.
REMOVAL OF SCALE DEPOSITS
This equipment should be installed with the Middleby TruH20 water treatment system which,
when properly maintained can provide a scale-free environment for your steamer. However,
because water quality can vary it is recommended that the steamer be checked every 90 to 120
days for scale build up. Regular maintenance should be carried out at this time.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
6.0 PERIODIC MAINTENANCE (Continued)
DESCALING BOILER
If the boiler has been descaled, a new Anode should be installed in the boiler.
1. With boiler empty, close manual blowdown valve. If appliance is equipped with Automatic
Blowdown, turn water supply to appliance OFF. Turn power switch ON. This will energize
and close blowdown valve.
2. Remove 3/4" pipe plug from Brass Tee on front top of boiler.
3. Insert appropriate hose or tube through fitting and pour in (½) half gallon (U.S.) of CLR
Descaling Solution or use the Optional Deliming assembly DPA-1 available from your
dealer.
4. Replace 3/4" pipe plug securely.
5. Open water supply to appliance allowing water to fill boiler to required level.
6. Let appliance cycle, allow two hours for descaling and cleaning. DO NOT TURN ON
STEAM to attached appliances or to upper compartment.
7. Open both the blowdown and low water level control valves for complete drainage. After
boiler drains, close both valves.
Appliance equipped with automatic blowdown - turn OFF power switch and open low
water control valve. This will allow complete drainage. Once drained close water level
control valve.
8. Turn appliance switch ON. When boiler is completely filled turn power switch OFF. This
will rinse and drain boiler. Appliances with manual blowdown valve must be opened to
drain.
9. Complete Step 8 twice to assure boiler is completely rinsed.
10. Appliance is now ready for use.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
7.0 CLEANING INSTRUCTIONS
CAUTION: Never spray water into electric controls.
CAUTION: Do not use cleaning agents that are corrosive.
CAUTION: Live steam and accumulated hot water in the
compartment may be released when the door is opened.
CAUTION: Disconnect the power supply during cleaning or
servicing.
1. Keep exposed cleanable areas of unit clean at all times.
2. Thoroughly wash steamer cavities, door liners, and pan racks at the end of each day or as
required with a mild detergent and water to prevent bacterial growth and odors.
3. Remove drain screens from inside compartment drains. Using a plastic bottle brush and
mild detergent, clean inside the drain opening ensuring there is no food residue or
blockage. Clean the drain screen and replace in its original position.
4. Wash gasket sealing surface with mild detergent to remove harmful food acids and rinse.
5. Rinse entire unit and dry. DO NOT GET WATER in electrical box or any electrical
component.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
8.0 ADJUSTMENTS
TO CALIBRATE PRESSURE SWITCHES
NOTE: Pressure switches are factory set. Calibration is only required if
pressure switches are replaced or if adjustment is required.
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INSTALLATION AND OPERATION MANUAL,
ELECTRIC CABINET BASE CONVECTION STEAMER, ECX-16, ECX-24
8.0 ADJUSTMENTS (Continued)
TO CALIBRATE PRESSURE SWITCHES (Continues)
CAUTION: Adjusting knob and nut will turn easily until they hit a
stop. Do not over torque. Over torquing may cause damage.
1. Turn the adjusting knob clockwise to the deadband to maximum.
2. Turn the adjusting nut clockwise to maximum.
3. Adjust in the following sequence:
- High limit pressure switch.
- Override pressure switch. (if equipped).
- Operating pressure switch.
- Use relief valve to release pressure from boiler for setting adjustments.
High Limit Pressure Switches
Allow pressure to build until unit shuts off. This should occur at 15 PSI. Set the
adjusting nut to switch off at 14.5 PSI on the gauge.
Override Pressure Switches
Set the adjusting nut to switch off at 13 PSI on the gauge.
Operating Pressure Switches
Set the high signal to switch off at 11 PSI on the gauge.
4. Release pressure in boiler below 9 PSI. The boiler should fire and once the
pressure has reached 11 PSI, the boiler should shut of f. Repeat this process
several times to make sure boiler operates between 9 and 11 PSI.
Once completed, pressure switches have been calibrated.
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