Drain Installation Guide
Tools Needed for Drain Installation:
- Adjustable wrench
- Pipe cutter
- Screwdrivers (flat and Phillips)
- Pipe sealant tape
- Bucket and towels
Step-by-Step Drain Installation
- Prepare Drain Location: Select a location with proper drainage slope and access to waste pipe connection.
- Install Drain Hose: Connect the drain hose to the dishwasher pump outlet using hose clamps.
- Connect to Waste System: Route the drain hose to the sink drain or garbage disposal with proper air gap installation.
- Create High Loop: Form a high loop in the drain hose under the sink to prevent backflow and siphoning.
- Secure Connections: Ensure all hose clamps are tight and connections are secure to prevent leaks.
- Test Drain System: Run a quick drain cycle to check for proper drainage and no leaks.
- Final Inspection: Verify all connections are watertight and drain hose is properly supported.
Drain Specifications
| Drain Pump Type | Direct Drive Inverter Drain Pump |
| Drain Hose Diameter | 5/8 inch (16mm) |
| Maximum Drain Height | 4 feet (1.2 meters) |
| Drain Flow Rate | 3.5 gallons per minute |
| Pump Motor Power | 120W |
| Drain Cycle Duration | 2-5 minutes |
| Noise Level (Drain) | 45 dB |
| Water Removal Efficiency | 99.8% |
| Filter System | Self-cleaning fine filter |
| Drain Hose Length | 5 feet standard (extendable to 10 feet) |
Drain System Warranty Information
- Full Warranty: 2 years parts and labor on drain system
- Pump Warranty: 5 years on Direct Drive Drain Pump
- Additional Coverage: Optional extended warranty available
For drain system warranty service, contact LG Customer Service at 1-800-243-0000 or visit LG.com
Drain System Features
Direct Drive Drain Pump
LG's innovative Direct Drive drain pump connects directly to the impeller without belts, reducing noise and increasing reliability while providing powerful drainage performance.
Smart Drain Technology
The advanced smart drain system monitors water flow and detects blockages, automatically adjusting pump power to clear minor obstructions and prevent flooding.
Self-Cleaning Filter System
Automatically cleans the fine filter during drain cycles, preventing food particles from clogging the drain system and maintaining optimal drainage performance.
Quiet Drain Operation
Specially designed sound insulation and direct drive technology ensure quiet drain operation, making it ideal for open-plan living spaces.
SmartThinQ Drain Monitoring
Wi-Fi enabled for remote monitoring via smartphone app, allowing you to receive drain cycle alerts and maintenance notifications for optimal performance.
High-Efficiency Water Removal
Removes 99.8% of water from dishes and the tub, ensuring faster drying times and more hygienic results with minimal water residue.
Drain System Components Explained
Drain Pump Assembly
High-power direct drive motor with corrosion-resistant impeller for reliable long-term performance
Fine Filter System
Multi-stage filtration that captures food particles while allowing efficient water drainage
Drain Hose
Reinforced PVC hose with anti-kink technology and heat resistance for durable performance
Water Level Sensor
Precise monitoring of water levels to optimize drain cycles and prevent overflow
Air Gap Device
Prevents backflow and contamination of the dishwasher from sink drainage
Check Valve
One-way valve that prevents water from flowing back into the dishwasher after draining
Drain System Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Dishwasher not draining | Clogged drain hose, blocked filter, drain pump failure | Check drain hose for obstructions, clean filter, verify pump operation |
| Slow draining | Partially clogged drain, kinked hose, food debris | Inspect drain path, straighten hose, remove food particles from filter |
| Water remains in bottom | Clogged filter, drain hose blockage, improper installation | Clean filter thoroughly, check drain hose, verify proper slope |
| Drain pump noisy | Foreign objects in pump, worn bearings, loose components | Check for foreign objects, inspect pump assembly, tighten connections |
| Drain error codes | Sensor issues, pump failure, electrical problems | Check error code meaning, inspect electrical connections, test pump |
| Water backing up | Sink drain clogged, air gap blocked, improper connection | Clear sink drain, clean air gap, verify proper waste connection |
Drain System Error Codes
- DE: Drain error - Check drain hose and pump for obstructions
- OE: Overflow error - Water level too high, check drain system
- IE: Water inlet error - May affect drainage, check water supply
- FE: Flooding detected - Immediate attention required
- LE: Motor issue - Drain pump failure, contact service
- PE: Pressure sensor error - Affects water level detection
Drain Manual Downloads
Current Model Drain Manuals
LDT7808SS
Top Control Dishwasher with Smart Drain
LDF7555ST
Front Control Dishwasher Drain System
LDP6810SS
Built-In Dishwasher Drain Manual
LDT9965BD
Black Stainless Dishwasher Drain Guide
Popular Previous Models Drain Manuals
LDF7545ST
Stainless Dishwasher Drain System
LDP6810BD
Black Dishwasher Drain Manual
LDT9965SS
Stainless Steel Drain Guide
LDFN454HT
Front Control Drain System Manual