Drain Installation Guide
Tools Needed for Drain Installation:
- Adjustable wrench
- Pipe cutter
- Screwdrivers (flat and Phillips)
- Pipe sealant tape
- Bucket for water collection
Step-by-Step Drain Installation
- Prepare Drain Location: Select a location with proper drainage slope and access to waste pipe connection.
- Remove Drain Cover: Carefully remove the drain cover and protective materials from the dishwasher drain system.
- Connect Drain Hose: Connect the drain hose to the dishwasher drain pump outlet using proper hose clamps.
- Route Drain Hose: Route the drain hose to the sink drain or garbage disposal with proper high loop installation.
- Secure Connections: Ensure all drain connections are tight and secure to prevent leaks and backflow.
- Test Drain System: Run a quick drain cycle to check for proper water flow and absence of leaks.
- Final Inspection: Verify all connections are properly sealed and the drain system operates efficiently.
Drain Specifications
| Drain Pump Type | Direct Drive 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 |
| Drain Noise Level | 45 dB |
| Drain Cycle Time | 2-5 minutes |
| Water Pressure Requirement | 20-120 psi |
| Drain Connection Type | Standard 7/8 inch air gap fitting |
| Drain Pump Power | 120V, 60Hz, 1.2A |
| Drain Filter Type | Self-cleaning fine mesh filter |
Drain System Warranty Information
- Drain Pump Warranty: 5 years parts and labor
- Direct Drive Motor Warranty: 10 years on Direct Drive Drain Motor
- Additional Coverage: Optional extended drain system 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 motor without belts, reducing noise and increasing reliability while providing powerful drainage performance.
Smart Drain Technology
Advanced sensors monitor water flow and detect potential drain blockages, automatically adjusting pump power to maintain optimal drainage performance.
Self-Cleaning Filter System
Automatically cleans the drain filter during each cycle, preventing food particles from clogging the drain system and maintaining consistent drainage.
Quiet Drain Operation
Specially designed drain system minimizes operational noise, making it ideal for open-plan kitchens and quiet home environments.
Anti-Clog Protection
Built-in protection system detects potential clogs and reverses pump direction to clear obstructions before they become serious problems.
Energy Efficient Drain Pump
High-efficiency drain motor consumes less energy while providing powerful drainage performance, reducing overall energy costs.
Drain System Operation Modes
Normal Drain
Standard drainage mode for regular dishwasher cycles with balanced performance
Quick Drain
Rapid drainage for time-sensitive situations and quick cycle completion
Heavy Drain
Enhanced drainage power for heavily soiled loads and challenging conditions
Quiet Drain
Reduced noise operation for nighttime use and noise-sensitive environments
Maintenance Drain
Special mode for system flushing and preventive maintenance procedures
Emergency Drain
Manual override mode for troubleshooting and emergency drainage situations
Drain System Troubleshooting
| Drain Problem | Possible Cause | Solution |
|---|---|---|
| Water not draining | Drain hose clogged, pump failure, filter blockage | Check drain hose for obstructions, clean filter, inspect pump operation |
| Slow drainage | Partial clog, kinked hose, improper installation | Clear drain line, straighten hose, verify proper installation slope |
| Drain pump noise | Foreign objects, worn bearings, loose components | Remove foreign objects, check pump assembly, tighten components |
| Water leaking from drain | Loose connections, damaged hose, faulty seals | Tighten connections, replace damaged hose, check seal integrity |
| Drain cycle not starting | Electrical issue, control board failure, sensor error | Check power supply, reset system, inspect control board |
| Incomplete drainage | Air gap blockage, venting issue, pump performance | Clear air gap, check vent system, test pump performance |
Drain System Error Codes
- DE: Drain error - Check drain hose and pump operation
- OE: Overflow detected - Check water level and drain system
- FE: Flooding detected - Inspect for leaks and water accumulation
- LE: Drain motor issue - Contact service center for motor inspection
- CE: Clog detected - Clear drain line and filter
- PE: Pressure sensor error - Check water level sensors
Drain Manual Downloads
Current Model Drain Manuals
LDP679Series
Direct Drive Dishwasher Drain System
LDF754Series
Smart Drain System Manual
LDT780Series
Advanced Drain Technology Guide
LDP567Series
Quiet Drain System Manual
Popular Previous Drain Models
LDF554Series
Standard Drain System
LDP449Series
Basic Drain Manual
LDT336Series
Traditional Drain System
LDP228Series
Legacy Drain Manual