Arrived to inspect commercial oven, not lighting. Found that there was no gas coming to the the pilot light, so checked the gas pressure. Discovered that the gas regulator was not letting gas through. Replaced the regulator and pilot lights are now able to light properly.
Removed Blended Ice Machine temp wires on left side and replaced with harness, assembled and tested, all okay
Examined Slicer unit, found indexing knob froze up, took all apart, cleaned and lubed, adjusted and tested, unit back in service
Examined Combi Oven unit, found 34-16 error coming up, traced problem to jumper missing on bottom ignition module, put number back in, error code did not come up - found bottom motor not turning and bottom burner not firing top dry heat lighting 5.75 flame current then dropping out, customer, due to age of unit if they wanted it repaired, after customer for now decided to repair, will return in morning. 3/5/20 Returned for service, removed and replaced main blower bottom unit fired on all 3 burners ran unit in steam, hot air and combi mode unit working correctly but did find leak in gas line, shut gas off to unit per customer order parts QWP (expedited freight). 3/6/20 Removed and replaced gas lines on gas valves, tested operation, tested good.
Examined Combi Oven unit found top dry air burner not firing and steam burner blower not turning all so not lighting no error.codes coming up 240v on incoming side of motor wiring harness needs to be replaced tried new control board same problem sub out module same problem will order e-prom. 6/25/19 returned for service replaced broken cable harness and installed nnea e-prom tried loading update software new software updated unit tested motors steam and top hot air not turning found second bad wire harness from brittle wiring tried subbing in new control board did not solve problem unit not communicating with control board will order new wiring harness and return. 6/26/19 returned for service switch usb cable from i/o board to top ignition module same problem 2 burner blowers not turning spoke with Jim from rational ran test on all communication system by errors coming up from disconnecting components in unit determine ignition module shorted and took out burner blower motors all so
Examined Fryer Electric unit, found leak coming from return valve where handle connects. Tightened connections but still leaking. Will order parts and return. 10-11-18 Pulled out the fryer and drained the oil into the sump. Loosened a fitting and noticed a puddle of oil on the floor. Found the oil sump pan with a hole in it. It was cracked. The manager made a phone call and said to go ahead and replace the fitting I had and not to obtain a filter pan (sump). Did as directed and replaced the return valve. Had to manufacture a new pin to replace the cotter pin that fell apart when pulled out of the old valve.
Examined Combi Oven unit. Right side unit, found humidity flap motor bad. Unit needs to be delimed and door gasket replaced. Unit flame currents good. No other problems found at this time. Chemical door for care pump missing. Left unit found low flame current in steam. Found ignition bad. Removed and replaced ignition. Meat probe bad. Replaced meat probe (customer supplied part). Will order new meat probe for customer stock. Also needs door gasket, discharge hose and delimed. 1/16/18 Left side, changed discharge hose, door gasket and delimed generator right side, changed humidity control , door flap and door gasket and delimed generator. Tested both combis, both operational
Put in parts supplied by customer: manifold safety, pilot, pilot tube, pilot shield, pilot adjuster valve, flame sense, ignition module, thermostat. Assembled gas line, tested for leaks, found none. Assembled top and lit pilots, safety working. Assembled bottom unit, lit and heated to 200*, would not cycle back on. Found pilot solenoid staying open keeping pilot lit not allowing ignition sequence to begin. 1-26-17 Removed pilot solenoid, installed new one provided by customer. turned on gas, plugged in and tested. Opened/closed door. Re lit every time. Set at 200*, came to temp and cycled. All okay.
Examined unit (Reach=In Cooler). Evaporator clear. Compressor on roof. Gauged system and found cycling on Hi pressure due to head master control valve. Customer is ordering part. -- Recovered refrigerant (their equipment). Removed and installed a new headmaster control valve an drier (customer provided drier). Evacuated and recharged system (customer supplied refrigerant). Checked operation.
Examined unit. Found no power at single solenoid. Traced problem back to relay board. No power out of board. Removed and replaced relay board and tested. 240vac to solenoid. Also meat probe broken. Removed and replaced meat probe.
Gained access to roof. Compressor not starting -- maintenance installed a new relay and capacitor. Trying to start -- Locked rotor. Customer is ordering new compressor.
Examined Combi Oven. Found Service 34 - 14 top motor. Found 119vac to motor, green indicator light on motor stops running. Pushed USB cable in, cable locked in place. Motor started running. Let fully heat and cycle. Started and stopped unit every time it did not stop again. Cable was loose. If problem happens again may be I/O board. Customer will use and advise.
Hatco Warming Cabinet Tech - Examined unit. Found plug shorted out. Replaced plug, checked over. Good amp draw on elements and fan motor switch is ok.
Frymaster Electric Fryer Tech - Removed back covers. Removed and replaced center actuator. Tested open/close. All ok.
Rational Combi-Oven Tech - Examined unit. Checked all 3 burners. Found bottom hot air blower not turning. Unit not firing. Traced problem to ignition module. Removed and replaced ignition module. Burner blower turning. Unit fired, let fully heat and cycle.