The provided document is a manual for the Dolphin Rack Conveyor Dishwasher, model DRC-1G(E). This automatic dishwashing machine is designed for efficient and high-capacity cleaning of tableware in commercial kitchen environments.
Function Description
The DRC-1G(E) is a rack conveyor dishwasher that automatically moves and washes tableware placed in racks. It features a conveyor system that allows for continuous operation and easy control of speed, adapting to various operational environments. The machine is equipped with powerful washing and rinsing capabilities, utilizing both upward and downward rotating fixed nozzles to ensure thorough cleaning. It also incorporates a safety system that automatically shuts down in case of overload. The dishwasher is available in both gas (DRC-1G) and electric (DRC-1E) booster types, offering flexibility based on kitchen infrastructure.
Important Technical Specifications
General:
- Materials: Constructed from STS-304 stainless steel in various thicknesses (1.0T, 1.2T, 1.5T, 2.0T) for durability and hygiene.
- Electrical Specifications: Operates on 380V 3-phase 4-wired and 220V 1-phase power.
- Dimensions (DRC-1G): 1,400(L) × 720(W) × 1615(H) mm.
- Dimensions (DRC-1E): 1,400(L) × 740(W) × 1445(H) mm.
- Washing Capacity: 170-180 racks per hour (at a conveyor speed of 1.5 M/min), depending on the usage environment.
- Conveyor Speed: Adjustable from 0-2 M/min, controlled by a 180W speed control motor.
Washing System:
- Wash Pump: 1.7 kW (220V 1-phase & 380V 3-phase, 500 L/min) × 1 unit.
- Wash Tank Capacity: 80 liters × 1 unit.
- Wash Temperature: 60℃-70℃.
- Heating Element for Wash Tank: 4 kW × 1 unit.
- Wash Type: Powerful wash.
- Nozzle Type: Upward & downward rotating fixed nozzles (removable) for both wash and rinse.
Booster System:
- Gas Booster (DRC-1G): Instant gas booster by LNG or LPG. Can be 2-3 units without a tank or 1 unit with a tank.
- Heat Quantity for Wash Tank: 4,400 Kcal/h.
- Heat Quantity for Rinse Tank: LNG 42,000 Kcal/h, LPG 3.5 kg/h (depending on kitchen environment).
- Instant Gas Heater: 16L (without tank), 15A, 2.6 Kg/h; 161 (with tank), 15A, 3.5 Kg/h.
- Electric Booster (DRC-1E): 27 kW electric heater equipped.
- Electric Consumption: 5.8 kW (Gas Type), 36.7 kW (Electric Type).
- Heat Power (Wash): 8 kW.
- Heat Power (Rinse): 27 kW.
Water System:
- Water Consumption (Wash Tank): 80 L × 1 unit.
- Rinse Water Consumption: 600 L/hr.
- Rinsing Water Temperature: 82℃ (recommended).
- Tap Water Connection: Pressure: 1.2 Kg/cm², Pipe: 15A over.
- Draining Connection: 40A over pipe at bottom of the machine.
Safety Devices:
- Overload relay.
- Emergency switch at inlet and outlet.
Usage Features
Pre-check for Operation:
- Clean the inside of the dishwasher, strainer, wash and rinse nozzles, and wash tank to remove food debris and scale.
- Close the drain valve.
- Check for damaged main electrical cable.
- Open all watering valves.
- Turn on the switch; the red lamp will flicker during watering, and the green lamp will flicker when ready.
Operation Guidelines:
- Do not operate until the wash temperature reaches 50-60℃.
- Turn on the start switch. The machine offers automatic (wash water sprayed on rack loading) and manual (wash water sprayed continuously) modes.
- Check pump operation, conveyor, and emergency switch.
- Ensure rinse aid and detergent are available.
- Load racks smoothly into the inlet.
- Press the emergency button if malfunctions occur.
- Dishes should not be turned upside down.
- Only dishes should be loaded; avoid loading items over 300mm in height.
Speed Controller (GUD-C):
- Press the "mode" button twice after switching on.
- Adjust speed using the ▲ or ▼ buttons.
- The speed setting will be applied after 10 seconds if no further changes are made.
- Locking/unlocking the controller involves specific sequences of button presses (MODE S/W 7 times for lock, AUTO/MANUAL S/W to MANUAL, SPEED CONTROLLER RUN/STOP S/W, and MAIN POWER S/W ON for unlock).
After Work Check:
- Ensure no dishes remain inside.
- Turn off the power switch.
- Open the drain valve to drain water.
- Remove food stuffs from the strainer.
- Clean the inside of the dishwasher.
- Close all valves.
Maintenance Features
Keeping the Machine Clean:
- Regularly clean the inside of the machine, strainer, and wash/rinse nozzles after each use.
- Wipe off any chemical stains from the machine surface.
- If not in use for a long time, open the drainer and completely drain wash water.
- Avoid getting the control box wet to prevent electric shock and malfunction.
- Always remove scale from the machine.
Chemical Usage:
- Use only chemicals designated for dishwashers. Normal market chemicals may produce excessive foam, reducing washing efficiency and potentially causing malfunctions.
Temperature Control:
- Maintain proper wash and rinse water temperatures for optimal washing efficiency.
- Recommended washing water temperature: 45℃-65℃.
- Recommended rinse water temperature: 70℃-90℃.
Troubleshooting:
The manual provides a comprehensive troubleshooting guide for common issues such as:
- System not working (checking breakers, power lamps, electrical supply).
- No watering (checking power, valves, floatless sensor).
- Not quitting watering (cleaning floatless sensor, solenoid valve).
- Dishes not clean after wash (removing dregs from nozzles/pump, checking wash pump contactor, water level, wash temperature, chemical agent feeding).
- Rinse not good (checking water pressure, cleaning rinse nozzle, checking rinse temperature).
- Conveyor chain not working (checking emergency switch, chain speed display/control, overload relay, motor lamp, chain, sprocket).
- Emergency switch not working (checking emergency switch, overload relay, motor relay lamp).
- Chain out of conveyor (disjointing chain after power off, fastening loose chain).
- Gas booster out of order (checking gas supply, pressure, inlet/outlet valves).
Safety Precautions:
- Only trained technicians should operate the machine.
- Do not overload racks or wash undesignated items.
- Keep the door closed during operation to prevent burns from hot water.
- Do not open the electric control box.
- Ensure the power outlet is grounded.
- Install the machine in a well-ventilated area away from inflammables.
- In case of gas booster ignition defects, shut off the gas valve, check for leaks, and call service.
- Wear protection gloves during operation, cleaning, or moving due to hot water and sharp edges.
- Do not touch the rotating chain; use the emergency stop button if needed.
- Never wash poisoned dishes or put inflammable liquids into the tank.
- Keep children away from chemical agents and the operating switch.
- Avoid skin contact with detergent or rinse aid; wash immediately with warm water if contact occurs.
- If chemicals are ingested, seek medical attention immediately.
- Contact the local service center for any problems or questions.
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