Drain Clearing Procedures

Purpose

Procedures for clearing clogged drains using various methods.

After diagnosis confirms a drain clog that can be cleared (not a structural issue)

Select appropriate cable size for the drain (1/4" for sinks, 3/8" for tubs, 3/4" or larger for main lines)

Feed cable slowly — do not force through resistance

When resistance is met, engage the cutting head and apply steady pressure

Retrieve the cable slowly, cleaning as you go

Run water to verify the drain is clear

Camera inspect after clearing when possible to confirm results

Camera inspect first to ensure the pipe can handle jetting pressure

Do NOT jet pipes that are collapsed, severely deteriorated, or have back-pitched sections

Insert jetter hose and advance slowly

Work from downstream to upstream when possible

Make multiple passes for heavy buildup

Camera inspect after jetting to verify results

Use only approved drain cleaning products

Do not use chemical drain cleaners on severely clogged drains — they can make the situation worse

Enzyme treatments are for maintenance, not emergency clearing

Inform the customer about what products are being used

Run water for several minutes to verify the drain flows freely

Camera inspect the line to check for underlying issues

Present any additional findings to the customer (root intrusion, deterioration)

Recommend maintenance plan to prevent recurrence

Always wear PPE: gloves, eye protection when operating cable or jetter
Cart Jetter manual procedures apply — follow the equipment-specific operating guidelines
Never force a cable through a blockage caused by a solid object — you may lose the cable
Document before and after with photos/video in ServiceTitan