Garland GPD SERIES GAS PIZZA OVENS - Manuel (Page 12)

Part # 1844063 Rev 1 (01/30/07) Page 12
Problem Causes Solutions
Hot Spots in Deck Flame diverters not installed properly Push all the way to the back of oven
Flame diverters warped or damaged May need replacing
Bottoms cook before top Deposit on deck Clean deck
Low production oven idling Turn temperature up after loading pizza.
Make sure to turn the temperature down
after bake is compete
By-pass flame too high Adjust by-pass flame
Improper damper position Adjust dampers
Bottoms become light during
periods of heavy production Improper damper position Close dampers
Placement of pizza Change placement
By-pass flame low Increase by-pass flame
Color overall dark High temperature Lower temperature
Pizza left in too long Reduce bake time
By-pass flame high Reduce by-pass flame
Thermostat Check actual temperature; call for service
Color overall light Short bake time Bake longer
Lower temperature Increase temperature
Dough Check dough for freshness
Pre-heat time short Allow for adequate pre-heating
Top color light Damper closed Open damper
Oven idles during slow periods Increase temperature to bake, reduce again
when bake is finished
Burner flame yellow/soft/lazy Not enough air mixing Open (adjust) air shutter
Low gas pressure Adjust pressure
Flame lifts off burner ports Too much air mixed with gas Close (adjust) air shutter
Flashes back in burner Gas pressure too high Adjust pressure
Pops excessively when turned off Wrong orifice in unit Replace with proper orifice
Burner flame too large Unit over gassed or wrong orifice Check gas pressure and orifice size
Burner flame shuts off when oven
reaches set temperature By-pass set too low Adjust by-pass
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