Blodgett MT3855G-G manual Troubleshooting Guide, Maintenance, Possible Causes, Suggested Remedy

Models: MT3855G-G

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Troubleshooting Guide

 

 

 

 

Maintenance

 

 

 

 

 

 

 

 

 

 

 

Troubleshooting Guide

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

POSSIBLE CAUSE(S)

 

SUGGESTED REMEDY

 

 

 

 

 

 

 

 

 

 

 

SYMPTOM: Blower motor(s) not running

 

 

 

 

 

 

 

 

 

 

 

S

Computer Control turned OFF

S

Press ON/OFF key

 

 

 

S

Emergency stop switch on OFF

S

Pull switch out to ON

 

 

S

No power to oven

S

Reset breaker

 

 

S

Motor circuit breaker open

S

*

 

 

 

S

Control Circuit breaker open

S

*

 

 

 

S

Motor(s) burned out

S

*

 

 

 

 

 

 

 

 

 

SYMPTOM: Computer controller displays: Probe-Open-Probe-Short and alarm buzzer sounds

 

 

 

 

 

 

 

 

 

S

Shorted or open RTD probe

S

Press Clear key to silence buzzer

 

 

 

S

Computer controller not properly installed

S

Reinstall

 

 

S

Internal problem with computer Controller

S

*

 

 

 

S

Loose connections at the computer Controller

S

*

 

 

 

 

 

 

 

 

 

 

 

SYMPTOM: Burner will not fire

 

 

 

 

 

 

 

 

 

 

 

S

Computer control turned OFF

S

Press ON/OFF key

 

 

 

S

Emergency stop switch on OFF

S

Pull switch out to ON

 

 

S

Blower motor(s) not running

S

*

 

 

 

S

Computer temperature not set above ambient

S

Set to desired temperature

 

 

 

temperature

 

 

 

 

 

S

Manual gas valve closed

S

Open valve

 

 

S

High limit control tripped

S

*

 

 

 

S

Defective Computer Controller

S

*

 

 

 

S

Control circuit breaker tripped

S

*

 

 

 

S

Air pressure switch out of adjustment

S

*

 

 

 

S

Thermal switch in control compartment tripped

S

Excessive intake air temperature --- check hood

 

 

 

 

 

system

 

 

 

 

 

 

*Denotes remedy is a difficult operation and should be performed by qualified personnel only. It is recommended, however, that

 

 

 

All repairs and/or adjustments be done by your local Blodgett service agency and not by the owner/operator. Blodgett cannot as-

 

 

sume responsibility for damage as a result of servicing done by unqualified personnel.

 

 

 

 

 

 

 

 

WARNING!!

Always disconnect the power supply before cleaning or servicing the oven.

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Page 27
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Blodgett MT3855G-G manual Troubleshooting Guide, Maintenance, Possible Causes, Suggested Remedy