Page 2 - TABLE OF CONTENTS
MODEL C24EA - GENERAL F25213 (May 2006) Page 2 of 52 TABLE OF CONTENTS GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 COVERS AND PANELS . . . . . . . . . . . . . . . . . . . . ....
Page 3 - GENERAL; INTRODUCTION; MODELS COVERED
MODEL C24EA - GENERAL F25213 (May 2006) Page 3 of 52 GENERAL INTRODUCTION This manual is applicable to the models and ML numbers listed on the cover page. Procedures apply to all models unless specified otherwise. Steam Cooking Atmospheric steamers offer an efficient way to produce many foods in eit...
Page 4 - SPECIFICATIONS
MODEL C24EA - GENERAL F25213 (May 2006) Page 4 of 52 SPECIFICATIONS NOTE: All C24EA steamers, with exception of 480V steamers, are shipped pre-wired for 208/60/3 operation. Steamer heating element wiring connection change is required if connecting to 208/60/1, 240/60/1 or 240/60/3 electrical service...
Page 5 - REFERENCE MATERIAL; TOOLS
MODEL C24EA - GENERAL F25213 (May 2006) Page 5 of 52 Other chemical properties in water supplies can also affect good steam generation and vary from within each state and locality.The water level probes in the steam generator tank use ions in the water to detect the water level. Do not use fully dem...
Page 6 - COVERS AND PANELS; RIGHT AND LEFT SIDE PANELS
MODEL C24EA - COVERS AND PANELS F25213 (May 2006) Page 6 of 52 RIGHT SIDE SHOWN COVERS AND PANELS WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. RIGHT AND LEFT SIDE PANELS NOTE: Removal of left side panel is identical to the procedure for the right si...
Page 7 - REAR PANEL
MODEL C24EA - COVERS AND PANELS F25213 (May 2006) Page 7 of 52 SCREW LOCATION REAR PANEL WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. 1. Remove screws securing top cover to rear panel and rear panel to steamer frame. NOTE: If incoming plumbing or dr...
Page 8 - DOOR; REMOVAL
MODEL C24EA - DOOR F25213 (May 2006) Page 8 of 52 DOOR WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. REMOVAL 1. Close door. 2. Remove LEFT SIDE PANEL as outlined in COVERS AND PANELS. 3. Remove nuts from upper hinge located inside front panel. 4. Ope...
Page 9 - DOOR HANDLE
MODEL C24EA - DOOR F25213 (May 2006) Page 9 of 52 DOOR HANDLE Removal 1. Open door. 2. Remove screws from top and bottom of door assembly. 3. Pull outer door housing away from inner door panel starting at the hinge side of door to separate the door halves. NOTE: The smaller radius of the step spacer...
Page 10 - LATCH ASSEMBLY
MODEL C24EA - DOOR F25213 (May 2006) Page 10 of 52 LATCH ASSEMBLY Removal and Disassembly 1. Separate outer door housing assembly from inner door panel as outlined under DOOR HANDLE. 2. Remove screws securing latch assembly to inner door panel and remove latch mechanism. 3. Remove E-clip from latch ...
Page 11 - HINGE BEARINGS; DOOR LATCH
MODEL C24EA - DOOR F25213 (May 2006) Page 11 of 52 2. Install outer door housing assembly as outlined in DOOR HANDLE. 3. Check opening and closing operation of door. 4. Check steamer for proper operation and leaks around door seal. HINGE BEARINGS 1. Close door. 2. Remove LEFT SIDE PANEL as outlined ...
Page 12 - DRAIN BOX; REMOVAL AND REPLACEMENT
MODEL C24EA - DRAIN BOX F25213 (May 2006) Page 12 of 52 CLOSE-UP FROM RIGHT SIDE OF STEAMER Adjustment 1. Reinstall striker with slot pointing upward and hand tighten nut only. 2. Close door to center striker in front panel mounting hole. 3. Open door and check striker slot for horizontal alignment....
Page 13 - COOKING COMPARTMENT
MODEL C24EA - COOKING COMPARTMENT F25213 (May 2006) Page 13 of 52 PROFESSIONAL MODEL SHOWN COOKING COMPARTMENT WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. REMOVAL AND REPLACEMENT NOTE: The cooking compartment and front panel are constructed as an a...
Page 15 - THERMOSTATS; HOLD THERMOSTAT
MODEL C24EA - THERMOSTATS F25213 (May 2006) Page 15 of 52 THERMOSTATS HOLD THERMOSTAT WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. 1. Turn off machine to drain steam generator tank. Allow steamer to complete drain cycle.A. Turn off water supply. 2. ...
Page 16 - CONDENSATE THERMOSTAT
MODEL C24EA - THERMOSTATS F25213 (May 2006) Page 16 of 52 Installation 1. Insert capillary bulb through large compression nut.A. Route capillary bulb through top of heating element. B. Position capillary bulb between top of second and third heating element coils. Secure with hose clamp to second coi...
Page 17 - TIMER
MODEL C24EA - TIMER F25213 (May 2006) Page 17 of 52 TIMER WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. REMOVAL AND REPLACEMENT NOTE: The basic and professional model steamers use the same 60 minute timer. When the timer reaches zero, an external buz...
Page 18 - HEATING ELEMENT
MODEL C24EA - HEATING ELEMENT F25213 (May 2006) Page 18 of 52 BASIC MODEL SHOWN HEATING ELEMENT WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. REMOVAL AND REPLACEMENT 1. Turn off machine to drain steam generator tank. Allow steamer to complete drain c...
Page 19 - DIAGNOSTIC CHECKS
MODEL C24EA - HEATING ELEMENT F25213 (May 2006) Page 19 of 52 9. Reassemble parts removed in reverse order of removal. Tighten heating element screws evenly to 70 in*lbs. Follow tightening sequence pattern as shown in illustration. 10. Check steamer for proper operation and leaks around heating elem...
Page 20 - SUPER HEATER
MODEL C24EA - SUPER HEATER F25213 (May 2006) Page 20 of 52 SUPER HEATER WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. REMOVAL AND REPLACEMENT 1. Turn off machine to drain steam generator tank. Allow steamer to complete drain cycle.A. Turn off water s...
Page 22 - WATER LEVEL CONTROL COMPONENTS; WATER LEVEL CONTROLS
MODEL C24EA - WATER LEVEL CONTROL COMPONENTS F25213 (May 2006) Page 22 of 52 WATER LEVEL CONTROL COMPONENTS WATER LEVEL CONTROLS Low Level Cut-Off & Differential Control The steamer is equipped with three water level sensing probes (high, low and low level cut-off) and a water level control boar...
Page 26 - MOTORIZED DRAIN VALVE
MODEL C24EA - WATER LEVEL CONTROL COMPONENTS F25213 (May 2006) Page 26 of 52 NOTE: Apply pipe thread sealant to plumbing threads before assembly.7. Reassemble parts removed in reverse order of removal. 8. For Basic model steamers, perform ON/OFF SWITCH ADJUSTMENT as outlined in ON/OFF SWITCH. 9. Che...
Page 28 - SWITCHES, BUZZER AND SOLENOIDS
MODEL C24EA - SWITCHES, BUZZER AND SOLENOIDS F25213 (May 2006) Page 28 of 52 SWITCHES, BUZZER AND SOLENOIDS ON/OFF SWITCH WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. Basic Models 1. Pull out on handle to turn steamer off and drain generator tank. 2...
Page 29 - DOOR SWITCH
MODEL C24EA - SWITCHES, BUZZER AND SOLENOIDS F25213 (May 2006) Page 29 of 52 3. Push handle fully in and keep in position. 4. Position plunger of on/off switch against linkage bracket such that plunger is fully engaged. A. Adjust switch such that switch plunger is perpendicular with linkage bracket ...
Page 30 - PRESSURE SWITCH
MODEL C24EA - SWITCHES, BUZZER AND SOLENOIDS F25213 (May 2006) Page 30 of 52 A. Close door. B. Push switch up against switch linkage as far as possible. C. Tighten switch mounting hardware. 3. Check door switch operation.A. Set meter to measure resistance and place meter leads across the COMMON and ...
Page 32 - VACUUM RELIEF SOLENOID
MODEL C24EA - SWITCHES, BUZZER AND SOLENOIDS F25213 (May 2006) Page 32 of 52 C. Repeat clamping of steam outlet hose a total of three times to find the average cut- out pressure. Record pressure. D. If pressure is outside tolerance (4.5 to 4.7 psi), adjustment is necessary. Refer to Adjustment. E. I...
Page 33 - BUZZER
MODEL C24EA - SWITCHES, BUZZER AND SOLENOIDS F25213 (May 2006) Page 33 of 52 A. Install valve with the inlet (ON) side of valve connected to the back panel port and the outlet (OFF) side of valve connected to the water level control plumbing. Apply liquid thread sealant to threads of piping before a...
Page 34 - STEAM GENERATOR TANK
MODEL C24EA - STEAM GENERATOR TANK F25213 (May 2006) Page 34 of 52 STEAM GENERATOR TANK WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND FOLLOW LOCKOUT / TAGOUT PROCEDURES. REMOVAL AND REPLACEMENT 1. Turn off machine to drain steam generator tank. Allow steamer to complete drain cycle.A. ...
Page 36 - ELECTRICAL OPERATION; COMPONENT FUNCTION
MODEL C24EA - ELECTRICAL OPERATION F25213 (May 2006) Page 36 of 52 ELECTRICAL OPERATION COMPONENT FUNCTION Water Level Control (WLC) Board . . . . . . . . . Controls water level by monitoring conditions of the three water level probes H, L and LLCO. Buzzer . . . . . . . . . . . . . . . . . . . . . ....
Page 38 - COMPONENT LOCATION
MODEL C24EA - ELECTRICAL OPERATION F25213 (May 2006) Page 38 of 52 COMPONENT LOCATION Electrical Control Panel NOTE: Relay K4 and transformer T2 are present on Professional models only.
Page 42 - SEQUENCE OF OPERATION
MODEL C24EA - ELECTRICAL OPERATION F25213 (May 2006) Page 42 of 52 SEQUENCE OF OPERATION Refer to the correct wiring diagram for model being serviced when reviewing sequence of operation. NOTE: If power switch is set to off when service voltage is applied, steamer will enter the timed drain cycle. B...
Page 45 - WIRING DIAGRAMS
MODEL C24EA - ELECTRICAL OPERATION F25213 (May 2006) Page 45 of 52 WIRING DIAGRAMS Heating Element Wiring
Page 50 - TROUBLESHOOTING
MODEL C24EA - TROUBLESHOOTING F25213 (May 2006) Page 50 of 52 TROUBLESHOOTING SYMPTOM POSSIBLE CAUSES Compartment leaks water around door. 1. Unit not level. 2. Drain line obstructed or not to an open gap drain. 3. Door gasket damaged. Cold water condenser not operatingproperly. 1. Solenoid (2SOL) i...
Page 52 - CONDENSED SPARE PARTS LIST
MODEL C24EA - CONDENSED SPARE PARTS LIST F25213 (May 2006) Printed in U.S.A. CONDENSED SPARE PARTS LIST C24EA PART NO. DESCRIPTION Basic Professional Qty. 844069-1 Water Level Control Board (WLC) X X 1 856658-1 Cavity Vacuum Breaker X X 1 294500-33 Transformer X X 1 410472-8 Terminal Block - Main X ...
