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Maintenance

Troubleshooting Bottom Oven Section

Each oven section has a redundant contactor that

will not allow the high voltage controls to work (hot

air elements, steam elements, & convection moĆ

tors) should a fault be detected. Review the followĆ

ing fault probable causes. If you reset a fault, you

must determine the route cause of the overload.

When the circuit overload trips, it breaks all three

incoming legs to the hot air elements, steam eleĆ

ments, and motor. It also has an auxiliary contact

which breaks the return leg to the contactor coils

in the low voltage control circuit to these associatĆ

ed components.
1. The steam generator high limit (TAS2) has

tripped. Proceed to Steam Mode" to deterĆ

mine cause.

2. The motor overload (OL5) has tripped. Review

motor overload has tripped in Cool Down".

3. The steam overload (OL1) has tripped. ProĆ

ceed to Steam Mode" to determine cause.

4. The hot air overload (OL3) has tripped. ProĆ

ceed to Hot Air Mode" to determine cause.

NOTE: Overloads have an LED on them which

flashes when an overload is tripped.

a.) Two consecutive flashes - indicates a

current overload / probable element short

b.) Continuously ON" - indicates a phase

fault : high / low / missing one or more legs

c.) On / Off continuous flash - the overloads

are smart" and will recognize if all the high

voltage legs are not wired in phase. This

can happen on initial start up if a leg is reĆ

versed (motors running backwards (clockĆ

wise)) or a component has been changed

and not wired exactly as taken out.

POSSIBLE CAUSE(S)

SUGGESTED REMEDY

SYMPTOM: Convection motor runs intermittently.

Thermal overload on motor (M2) is opening and

closing (automatically resets when cooled).

Electrical compartment cooling fan is not running.

Check current draw. See if motor seal is out of

alignment. (Requires removal of blower wheel.)

Adjust seal if needed. Evaluate motor. Replace if

defective.

Check windings on fan (600+ ohms coil resistĆ

ance) if open, replace.

NOTE: The phrases boiler" or steam generator" are used interchangeably. The COSĆ5HA has an atmoĆ

spheric steam generator". The reason is for clarity and brevity.

Содержание COS-5H

Страница 1: ...Lakeside Avenue Burlington Vermont 05401 USA Telephone 800 331 5842 802 860 3700 Fax 802 864 0183 PN R10303 Rev K 4 09 E 2009 Blodgett Corporation TMIN PSIN COS 5HA INSTALLATION AND OPERATION INSTRUC...

Страница 2: ...potentials may exist when the power control is in the off position due to the charge retained in capacitors To avoid casualties always re move power and discharge and ground a circuit before touching...

Страница 3: ...TMIN XXXXXXXXXXXXXXXXXXXXX CHANGE RECORD CHANGE NO DATE TITLE BRIEF DESCRIPTION SIGNATURE OF VALIDATING OFCR...

Страница 4: ...e in the outer margins of the page Changes to illustrations are indicated by miniature point ing hands Changes to diagrams are indicated by shaded areas Dates of issue for original and changed pages a...

Страница 5: ...ral Supply Center Letter Dated CONTRACT NO NSN NO OF UNITS APL REMARKS DATE 5 Mar 98 CERTIFICATION It is hereby certified that the technical manual provided under contract number XXX XXX XX X XXXX for...

Страница 6: ...DITIONAL INFORMATION CALL AUTOVON 360 4809 9084 OR COMMERCIAL 905 882 5064 1 NAVSEA NO 2 VOL PART 3 TITLE 4 REV DATE OR TM CH DATE 5 SYSTEM EQUIPMENT 6 IDENTIFICATION NOMENCLATURE MK MOD AN 7 USERS EV...

Страница 7: ...PLEASE CLOSE WITH TAPE DO NOT STAPLE THANK YOU FOLD HERE COMMANDING OFFICER NAVAL SHIP WEAPON SYSTEMS ENGINEERING STATION NAVAL SEA DATA SUPPORT ACTIVITY CODE 5B00 PORT HUENEME CA 93043 5007 FOLD HERE...

Страница 8: ...IN STRUCTIONS THOROUGHLY BEFORE INSTALLING OR SERVICING THIS EQUIPMENT The information contained in this manual is important for the proper installation use and maintenance of this oven Adherence to t...

Страница 9: ...h the Combi Oven Steamer will save time labor and extensive cleaning of both the kitchen and the appliance With the Combi Oven Steamer the quality taste consistency and look of the food are improved t...

Страница 10: ...Your Service Agency s Address Model Serial Number Your oven was installed by Your oven s installation was checked by...

Страница 11: ...sting D combi baking The combination of circulating hot air and steam in the space saving high performance Combi Oven Steamer leads to improvements in the fol lowing areas D increased productivity in...

Страница 12: ...nce Condensation and waste water which result during steaming and cleaning are continuously drained The use of high quality insulation impedes exces sive heat radiation and saves energy OVEN STEAMER O...

Страница 13: ...tion 4 Oven Features Standard Features 1 2 2 3 7 8 4 5 6 5 6 Figure 1 1 Control Panel 2 Oven Doors 3 Rotating Door Latch 4 Base Section 5 Deliming Port 6 Deliming Handle 7 Optional Meat Probe 8 Door D...

Страница 14: ...required for steam removal THE INSTALLATION INSTRUCTIONS CON TAINED HEREIN ARE FOR THE USE OF QUALI FIED INSTALLATION AND SERVICE PERSONNEL ONLY INSTALLATION OR SERVICE BY OTHER THAN QUALIFIED PERSON...

Страница 15: ...learances are required for the COS 5HA Sides 0 Rear 6 UNPACKING 1 Remove the protective cover around the oven Inspect the unit for visible damage 2 Remove the bolts that lock the 2 1 2 x 4 hardwood sk...

Страница 16: ...thout legs The installation base was designed to facilitate the installation process and to improve the access to the oven if and when ma jor service is required Since the COS 5HA is slightly narrower...

Страница 17: ...Installation 8 Installation Base INSTALLATION BASE WITH OPTIONAL LEGS 1 44 33 91 38 37 Figure 3...

Страница 18: ...ovided with an optional wrot copper soldered end tube fitting reducer 3 x 2 funnel that may be fixed to the installation base For multiple oven installations install a deck mounted sloping drain with...

Страница 19: ...ove the two bolts and angle plates securing the skids to the rear of the oven base section See Figure 9 Bolt Plate Bolt Plate Figure 9 6 Move the oven assembly to the installation base as follows a Lu...

Страница 20: ...to separate electrical wire harnesses and plumbing lines We recommend that you tape both sides of each electrical and hose connection and mark them for easy identifi cation during reassembly If you ar...

Страница 21: ...nd the lower oven Mounting Screw Figure 13 5 Remove the control panel cover by sliding it forward The upper and lower side edge must clear the front trim Figure 14 6 Remove the right side rear panel b...

Страница 22: ...electrical and plumbing fittings connected to both upper and lower oven sections To separate the three oven sections base upper lower you will need to disconnect these fittings Refer to Figure 17 Disc...

Страница 23: ...of the lower oven drain is a 90_ brass fitting Disconnect the upper straight steam connect fitting with a wrench from both the 90_ brass fittings Next remove the two bolts securing the bracket holdin...

Страница 24: ...ameter that connect the lower oven section and oven base section together Two bolts are located in the rear upper left and right corners of the oven base section These bolts can be accessed from the b...

Страница 25: ...oven section and oven base section together Two nuts are located in the rear lower left and right corners of the lower oven section These nuts can be accessed from the back of the oven base section S...

Страница 26: ...Reconnect the electrical wires in the upper and lower oven sections Each section has a large black multi pin connector two large white connectors and three element wires In the lower oven section reco...

Страница 27: ...al block is located 15 Slide the oven assembly back onto the installa tion base The locking pins on the rear of the o ven base section will fit into and lock the base to the upright tabs attached to t...

Страница 28: ...e of oven base j Installed bolts to oven base and lower oven j Installed rear body panel j Siliconed top edge of lower oven j Installed bolts that connect lower oven to top oven j Installed rear body...

Страница 29: ...ow the desired set point 3 When the cavity temperature reaches the de sired set point the temperature indicator lamp goes off Preheating for the HOT AIR mode Always preheat the appliance prior to load...

Страница 30: ...ction 2 POWER ON LIGHT Indicates the unit is in Steam Hot Air or Combi 3 MODE SELECTOR SWITCH Turns power to the oven on or off Allows se lection of Steam Hot Air Combi or Cool Down Modes 4 TEMPERATUR...

Страница 31: ...can be al tered at any time during the cooking process The operation can be stopped by the use of the Mode Selector Switch or by opening the door 5 At the end of the specified time period the buzzer...

Страница 32: ...ny bone and the tip is not in a fat pocket These conditions can cause inaccurate readings 1 Set the MODE SELECTOR Switch to the de sired function 2 Turn the MEAT PROBE Switch 1 to ON 3 To set the desi...

Страница 33: ...URES Loading the Oven Place like sized product together on one rack In order to ensure proper air circulation racks and trays should not be crowded Oiling The quality of some foods such as steaks and...

Страница 34: ...are no longer necessary Even with full loads relatively shorter cooking time for food is need ed D High Quality Foods With the use of steam valuable taste and aroma are preserved since steamed foods r...

Страница 35: ...PLE DISHES Vegetables Fresh and frozen vegetables may be steamed to gether Frozen vegetables should be loosely scat tered on the trays Perforated trays shorten cook ing time although solid trays may b...

Страница 36: ...al weight D Juiciness and Crunchy Crusts When used at the beginning of the cooking pro cedure the searing action of steam instantly closes all pores This reduces the loss of protein and meat juices Th...

Страница 37: ...for crusting browning gratinating Stuffed peppers gratinated vegeta bles fennel broccoli cauliflower rack of lamb pork Hot Air Combi Combi steaming Combi roasting Combi baking Start with dry heat swit...

Страница 38: ...unshelled eggs D 6IDeep Perforated Steam Table Pan For potatoes COOKING TIMES The length of the cooking process depends on the quality weight and thickness of the food product TEMPERATURES Typically...

Страница 39: ...well done well done juicy well done well done 185_F 185_F 155_F 158_F 150_F 195_F 85_C 85_ 80_C 68_C 70_C 70_C 90_C Poultry Chicken Goose Turkey Duck well done well done well done 185_F 195_ 198_F 175...

Страница 40: ...Cooking Guide 31 Notes...

Страница 41: ...flush out the oven interior and re move all detergent residue NOTE The oven cavity should never be scoured or scraped On stainless interiors deposits of baked on splat ter oil grease or light discolo...

Страница 42: ...ertical This opens the deliming port c Pump in all of the solution d Close the deliming handle and remove the deliming hose from the deliming port The handle is now horizontal 6 Repeat STEPS 4 and 5 f...

Страница 43: ...own transformer T1 is defective S Mode selector switch S1 is not closing be tween terminals 23 24 S Motor contactor K8 is not closing S The motor overload OL6 has tripped S The circuit overload K6 has...

Страница 44: ...to determine cause NOTE Overloads have an LED on them which flashes when an overload is tripped 5 Two consecutive flashes indicates a current overload probable element short 6 continuously ON indicat...

Страница 45: ...gh limit is defective Replace S Replace light H5 S Defective mode selector switch S1 Replace switch SYMPTOM Hot air temperature light H5 will not come on but power on light H4 is lit S Oven is up to t...

Страница 46: ...en remove motor and inspect centrifugal switch through access plate for loose or disconnected wires Replace if defective If you re place a motor always replace the motor seal S Verify 220V to coil A1...

Страница 47: ...switch S1 Replace mode switch S Replace light S Return to Troubleshooting Hot Air Mode SYMPTOM Steam generator overfills S FILL CIRCUIT LOGIC S Inside the steam generator is a ball float with a reed...

Страница 48: ...STEAM light comes on in the steam mode P1 is defective SYMPTOM Mode switch is in the steam mode power on light is on but no steam NOTE If the water level is not maintained properly a safety TAS2 capil...

Страница 49: ...u have water is to open the delim ing port and see if water is present Remove and inspect The Float debounce timer has failed such that NC is staying closed all the time Inspect to in sure settings ha...

Страница 50: ...S Mode selector switch S1 terminals 15 16 or 17 18 are open S Solid state combi timer is not operating no steam in the combi mode only S Replace switch S Verify resister assembly with adjusting knobs...

Страница 51: ...these components in the order listed 1 Terminal block L1 L2 L3 440V 3ph 2 Primary coil of transformer T1 step down 440V to 220V 3 Secondary coil of transformer T1 220V 4 Control circuit breaker 5 Boil...

Страница 52: ...unction to follow motor operation Jump to step 30 to continue control circuit op eration 21 Plug connector P3 terminal 1 22 Motor contactor K8 coil terminal A1 to A2 23 Auxiliary contact K6 AUX on Red...

Страница 53: ...y contact K6 AUX on redundant con tactor K6 26 Terminal block L1 L2 L3 440V 3ph 27 Redundant contactor K6 terminals T1 T2 T3 28 Motor contactor K8 terminals L1 L2 L3 29 Motor overload protector OL6 te...

Страница 54: ...down transformer T1 is defective S Mode selector switch S1 is not closing be tween terminals 23 24 S Motor contactor K7 is not closing S The motor overload OL5 has tripped S The circuit overload K6 ha...

Страница 55: ...Mode to determine cause NOTE Overloads have an LED on them which flashes when an overload is tripped a Two consecutive flashes indicates a current overload probable element short b Continuously ON ind...

Страница 56: ...igh limit is defective Replace S Replace light H5 S Defective mode selector switch S1 Replace switch SYMPTOM Hot air temperature light H5 will not come on but power on light H4 is lit S Oven is up to...

Страница 57: ...en remove motor and inspect centrifugal switch through access plate for loose or disconnected wires Replace if defective If you re place a motor always replace the motor seal S Verify 220V to coil A1...

Страница 58: ...or switch S1 Replace mode switch S Replace light S Return to Troubleshooting Hot Air Mode SYMPTOM Steam generator overfills S FILL CIRCUIT LOGIC S Inside the steam generator is a ball float with a ree...

Страница 59: ...OO HOT FOR STEAM light comes on in the steam mode P1 is defective SYMPTOM Mode switch is in the steam mode power on light is on but no steam NOTE If the water level is not maintained properly a safety...

Страница 60: ...hung up in the boiler and staying closed A quick way to see if you have water is to open the deliming port and see if water is present Remove and inspect Verify settings on the Steam overload OL 1 The...

Страница 61: ...m S Mode selector switch S1 terminals 15 16 or 17 18 are open S Solid state combi timer is not operating no steam in the combi mode only S Replace switch S Verify resister assembly with adjusting knob...

Страница 62: ...mbi 1 Terminal block L1 L2 L3 440V 3ph 2 Primary coil of transformer T1 step down 440V to 220V 3 Secondary coil of transformer T1 220V 4 Control circuit breaker 5 Boiler high limit TAS1 terminal 11 to...

Страница 63: ...unction to follow motor operation Jump to step 30 to continue control circuit op eration 21 Plug connector P4 terminal 1 22 Motor contactor K7 coil terminal A1 to A2 23 Auxiliary contact K1 AUX on red...

Страница 64: ...ry contact K1 AUX on redundant con tactor K1 26 Terminal block L1 L2 L3 440V 3ph 27 Redundant contactor K1 terminals T1 T2 T3 28 Motor contactor K7 terminals L1 L2 L3 29 Motor overload protector OL5 t...

Страница 65: ...Maintenance 56 Schematic Top Oven Figure 36...

Страница 66: ...Maintenance 57 Schematic Bottom Oven Figure 37...

Страница 67: ...Maintenance 58 Schematic Oven Base Control Figure 38...

Страница 68: ...Maintenance 59 Schematic Oven Base Power Figure 39...

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