HV-100E Training Videos

Click on the links below to view service training video demonstrations featuring the Blodgett HV-100E.

The following tabs provide additional information on the electrical components on the wiring diagram.

Terminal Block 1

Description: TB1/Field Wiring Terminal Block
Purpose: Site supply power terminal block
Location: At the rear of the unit on the right side, visible by removing the right side panel.
Notes: The unit’s required supply is 3 Wire and Ground and should match the unit’s rating plate for voltage. If a high leg is present, do not place it on the same leg as the 14 AWG wires to the control circuit.HV-100E terminal block 1

Fuse Holder

Description: Fuse holder
Purpose: Provides fuse protection to the 440/480V control supply circuit.
Location: To the left of the element contactor in the slide out control compartment.
Notes: The fuse holder holds two 7 Amp fuses, part number 51455Print

Step Down Transformer

Description: Step Down Transformer
Purpose: Transforms 440/480 volts to 208 volts to power the control circuits.
Location: In the rear of the unit on the right side, visible by removing the right side panel.
Notes: All readings are with wires detached. The transformer should read 2 Ohms between terminals 440 and 0 IN, and 1 ohm between 220 and 0 OUT.HV-100E step down transformer

Circuit Breaker 1

Description: CB1/20 Amp Manual Reset Circuit Breaker
Purpose: Provides over current protection to the 208V control supply circuit.
Location: On the bottom left front control panel to the left of the USB port.
Notes: Trip amps of 27 and a delay of 24.HV-100E circuit breaker 1

Terminal Block 2

Description: TB2/208V AC voltage and Ground Terminal Block
Purpose: Distributes 208V AC and Ground within the control circuit.
Location: To the right of the heat sink probe in the slide out control compartment.
Notes: TB2 feeds 208V AC to the 24V AC Transformer, the 24V DC power supply and the Inverter Drive.HV-100E terminal block 2

24VAC Transformer

Description: T1/120 to 24V AC Transformer
Purpose: 24V AC power supply to the relay board and the controller.
Location: To the right of the circuit breaker in the slide out control compartment.
Notes: All readings are with wires detached. The transformer should read 25 Ohms between terminals 2 and 5, and 0.6 ohms between 6 and 10.HV-100E 24VAC transformer

24VDC Power Supply

Description: 24VDC Power supply
Purpose: Converts AC to DC power.
Location: To the Left of the Inverter in the slide out control compartment.
Notes: All readings are with wires detached +V to –V should read 326 Ohms. L to N should read 0.6 Ohms.

24VDC Short Troubleshooting ProcedureHV-100E VDC power supply

Terminal Block 3

Description: TB3/Rear Terminal Block
Purpose: Distribute 24V DC power to the high limit and the lights. (it is also the return for the Vent -24V DC)
Location: With the back panel of the oven removed, the terminal block is inside on the left.
Notes: This terminal block is also grounding the 24V DC Return to the unit chassis on the center terminals.HV-100E terminal block 3

Lights

Description: 12V DC Halogen Cavity Lights
Purpose: Illuminate the oven cavity.
Location: Inside the oven cavity on the top surface.
Notes: There are two styles of lights; Round and Rectangular.HV-100E lights

High Limit

Description: SW4/Cavity High Limit
Purpose: Manual reset Capillary High Limit monitors the oven cavity temperature and trips the shunt trip Circuit Breaker if cavity overheats.
Location: The reset is visible with the slide out control panel completely pulled just inside the control cavity. The capillary bulb feeds through the back panel of the oven cavity to the right of the convection motor when looking at the back of the motor.
Notes: The cavity high limit trips at 671˚F. I trips the CB2/Circuit breaker and sends a 24V DC signal back to the control through the relay board on J11.3 to trigger a High Limit Error.HV-100E high limit

Circuit Breaker 2

Description: CB2/25 amp 3 pole Circuit breaker with trip coil
Purpose: Over Amperage and Thermal tripping to the supply to the Element Contactor.
Location: To the right of the element contactor in the slide out control compartment.
Notes: Using the Trip coil, the Cavity High limit can trip the circuit breaker if the cavity temperature reaches over 671˚F. The tri coil should read 3.7 Amps.HV-100E ciruit breaker 2

Contactor

Description: K1/Heat Contactor
Purpose: Supplies power to the heating elements when 24V DV signal is sent from the relay board.
Location: To the right of the circuit breaker in the slide out control compartment.
Notes: The coil of the contactor should read 6 Ohms.HV-100E contactor

Element Assembly

Element Assemblies with Gasket Kits:
53004 (12KW 208V) – 7 ohms
53005 (12KW 220/440V) – 8 ohms
53006 (12KW 240/480V) – 9.5 ohms
53280 (14KW 208V) – 6 ohms
53281 (14KW 220/440V) – 7 ohms
53282 (14KW 240/480V) – 8.5 ohms
Description: AC Element Assembly
Purpose: Heating of the oven cavity.
Location: Inside the oven cavity at the rear of the unit behind the rear baffle.
Notes: Elements should read the following ohms (+/-.5) from T1 to T2, T2 to T3 and T1 to T3 at the contactor with the contactor open.HV-100E elements

Inverter

Description: Inverter Drive
Purpose: Motor Controller.
Location: Below the Motor Braking Resistor in the slide out control compartment.
Notes: The Inverter closes the Drive@Speed relay built into the J1000, whenever it sends power to the motor. As long as the motor’s thermal switch(s) are closed, the Drive@Speed 24V DC Return signal is sent to the relay board. If the relay board has sent fan speed outputs (J2.9-J2.12) and the Drive@Speed 24V DC signal is not present at J11.4, the control triggers a “Fan Error”.
Inverter Details
Inverter Programming
Inverter TroubleshootingHV-100E inverter

Convection Motor

Description: 220 Volt ½ HP Motor
Purpose: Convection air circulation for the oven Cavity.
Location: At the rear of the unit above the cavity intake vent.
Notes: Motor winding Ohms:
Blue to Black 6.2 Ohms
Brown to Black 6.2 Ohms
Brown to Blue 6.2 Ohms
Thermal switch opens at 302˚F (See Inverter Details above for more information)HV-100E convection motor

Terminal Block 4

Description: TB4/Terminal Block 4
Purpose: Distribution of the 24V DC power to the relay board and component -24VDC.
Location: Above the Motor Braking Resistor in the slide out control compartment.
Notes: This terminal block is used as Return reading for 24V DC troubleshooting.HV-100E terminal block 4

Controller

Description: Controller
Purpose: Main Controller and Interface used for Cooking and Programming.
Location: Front of the Oven on the right hand side.
Programming Quick Guide
Complete Controller Outline
Counters and USB Functions
Controller Error Codes

Video Demonstrating How to Set the Flowrate

Door Switch

Description: Door Switch Assembly
Purpose: Electrically registers the door position.
Location: Front of the Oven on the right hand side mounted behind the lower cover panel on the right of the door turnbuckle assembly.
Notes: The door switch should read closed when the door is closed and open when to door is open between common and normally open.HV-100E door switch

Relay Board

Description: Relay or Input/output Board
Purpose: Transmits oven inputs and outputs under the direction of the Controller.
Location: Front of the Oven on the right hand side mounted behind the Controller in the slide out control compartment.
Notes: The relay board is a key location to verify and test outputs to the oven and inputs to the control. The relay board has red LEDs that indicate what components have a call from the controller for activation.

Relay Board Test Points
Relay Board Guide
3D Relay BoardHV-100E relay board

Cavity Probe

Description: Oven Cavity Probe
Purpose: Temperature sensor for Oven Cavity.
Location: In front of the blower wheel in the rear of the oven.
Notes: The Cavity Probe uses resistance to report the oven cavity temperature to the controller.

Probe Diagnostic Kit 54379 Instructions
Probe Ohms ChartHV-100E cavity probe

Cooling Probe

Description: Inverter Heat Sink Probe/Cooling Probe
Purpose: Temperature sensor for cooling fan (axial fan) operation.
Location: Under the Motor Inverter heat sink, behind the relay board, on the slide out control panel.
Notes: The Cooling Probe uses resistance to report the Inverter Heat Sink temperature to the controller.

Probe Diagnostic Kit 54379 Instructions
Probe Ohms ChartHV-100E cooling probe

Quench Probe

Description: Quench Probe
Purpose: Temperature sensor for the drain water. Used to signal when cold water must be added to the exiting hot water to prevent overheating the drain.
Location: Under the Motor in the Quench Box, at the rear of the unit.

Probe Diagnostic Kit 54379 Instructions
Probe Ohms ChartHV-100E quench probe

Product Probe

Description: Meat Probe/Core Probe
Purpose: Temperature sensor for product based temperature controlled operation.
Location: Separate from unit, plugs into the front control panel into the “Probe” port. (The probe port is highlighted)
Notes: The Core Probe uses resistance to report the product internal temperature to the controller

Probe Diagnostic Kit 54379 Instructions
Probe Ohms Chart

Flowmeter Assembly

Description: 24VDC Water Manifold Assembly
Purpose: Control and distribution of the water supply.
Location: At the bottom center of the slide out control compartment.
Notes: Each solenoid should read 178 Ohms across the coil. The spritzer solenoid (top) feeds the spritzer tube in the rear of the oven cavity. (See below) Check for blockages at the tube if water issues arise.

Spritzer Tube LocationHV-100E flowmeter

Video Demonstrating How to Set the Flowrate

Vent Solenoid

Description: 24V DC Cavity Vent Solenoid
Purpose: Operates the cavity vent.
Location: Below the motor at the rear of the unit.
Notes: The cavity vent solenoid should read 30 Ohms across the coil. The “Cavity Vent” is an intake, all exhaust air should exit the tube in the upper right at the rear of the oven. If the exhaust vent is plugged, the cavity vent may send hot air into the motor causing motor problems.HV-100E vent solenoid

Cooling Fan

Description: 24VDC Cooling Fan/Axial Fan
Purpose: Cooling of the control compartment.
Location: To the left of the DC power supply on the slide out control compartment.
Notes: The fan draws the air from the rear and directs it towards the DC power supply and the motor inverter. The motor should read 3.7 Ohms across the winding. It is important that the fan pull clear air in at the back of the unit, if grease or contaminant laden air is injected into the unit, it can cause failures. If the fan fails, the inverter drive will overheat, and trigger a fan error.HV-100E cooling fan

3 Button Auxiliary Board

HV-100E aux boardDescription: 3 Button PCB
Purpose: User interface.
Location: At the top of the control panel on the right front of the unit.
Notes: The 5V DC Power to the board can be read across the Red and Black wires.