Dannmar D2-12C User Manual (English)

Questions and Answers:

I
Ivan SuttonAug 1, 2025
What to do if my Dannmar D2-12C lift does not raise or lower?
- M
  Monica KellyAug 1, 2025
  If your Dannmar Lifting Systems lift isn't raising or lowering, here's what you can check: * Ensure there's enough hydraulic fluid in the reservoir. * Verify there's no air in the hydraulic system. * Inspect hydraulic hoses for pinches or leaks. * Confirm the power unit is receiving power. * Replace dirty hydraulic fluid with clean fluid. * Make sure the lift isn't overloaded or the load isn't balanced.
S
Stephanie BrownAug 6, 2025
Why my Dannmar Lifting Systems lift does not stay up?
- J
  Joseph WeberAug 6, 2025
  If your Dannmar Lifting Systems lift isn't staying up, ensure that you leave the lift engaged on its safety locks and check for any hydraulic fluid leaks.
K
kennethcunninghamAug 10, 2025
How to troubleshoot a Dannmar D2-12C Lifting Systems motor that is not running?
- B
  brandondominguezAug 10, 2025
  If the motor of your Dannmar Lifting Systems is not running, check the connection to the power source to ensure it is properly plugged in and has the correct voltage. Also, check the wiring diagram on the power unit.
B
Brian SalazarAug 14, 2025
What to do if vehicle on Dannmar D2-12C Lifting Systems lift is not level?
- J
  jamiewhiteAug 15, 2025
  If the vehicle on your Dannmar Lifting Systems lift is not level, ensure the lift is engaged on its safety locks at the same height and that the safety locks in both posts are engaged. If either of these conditions isn't met, carefully lower the vehicle back to the ground and raise it again.
K
karensmithAug 19, 2025
How to clean dirty hydraulic fluid in Dannmar D2-12C?
- S
  seanperezAug 19, 2025
  If the hydraulic fluid in your Dannmar Lifting Systems is dirty, replace it with clean, approved ATF fluids such as Dexron III, Dexron VI, Mercon V, Mercon LV, or comparable fluids.

Dannmar D2-12C Specifications

General

Brand	Dannmar
Model	D2-12C
Category	Lifting Systems
Language	English

Summary

Installation and Operation Manual Introduction

Product Overview and Models

Manual covers D2-12C and D2-15C two-post lifts.

Important Safety Notice: Read First

Crucial safety warning to read the manual before operation.

Product Warranty and Limitations

Product Warranty Details

Explains what is covered and not covered under warranty.

Manual Limitations

Notes about product updates, revisions, and publisher responsibility.

Owner's Responsibilities and Safety Notices

Important Installation Notices

Emphasizes installer training and safety precautions.

Understanding Safety Symbols

Explains DANGER, WARNING, and CAUTION symbols and their meanings.

Owner's Responsibilities

Outlines owner duties for lift safety and maintenance.

Shipping Information and Claims

Instructions for inspecting shipments and filing claims.

Installer/Operator Agreement and Protective Equipment

Installer/Operator Agreement

Agreement to terms regarding site inspection, floor condition, and responsibilities.

Mandatory Protective Equipment

Specifies required OSHA-approved PPE for installation.

General Safety Instructions

Operation Safety Guidelines

Rules for safe lift operation, including electrical, environmental, and personal safety.

Maintenance and Inspection Safety

Instructions for keeping the lift clean, checking parts, and general alertness.

Site Selection and Preparation

Tools Required for Installation

Lists necessary tools for lift installation.

Site Selection Criteria

Guidelines for choosing an appropriate location for the lift.

Concrete Specifications

Details minimum concrete thickness and PSI requirements for installation.

Lift Components Identification

Component Identification

Illustrates and labels the major parts of the lift.

Pre-Installation Inventory

Advice to ensure a complete inventory of parts before installation.

Lift Specifications

Technical Specifications Table

Lists dimensions, capacities, and other technical data for D2-12C and D2-15C.

Installation Clearances

Clearance Requirements Diagram

Illustrates minimum wall, bay, and obstruction clearances for installation.

Step 3: Column Preparation

Cable Sheave and Routing Preparation

Instructions for accessing and routing cables within the columns.

Hydraulic Fitting Installation

Guidance on installing cylinder fittings and orienting them for hose routing.

Step 3 Continued: Hose and Cable Routing

Hydraulic Hose Routing in Columns

Details on routing hydraulic hoses through column retaining clips.

Equalizer Cable Routing

Instructions for routing equalizer cables through sheaves and securing them.

Hose Routing Visualization

Hydraulic Hose Routing Details

Illustrates the routing of hydraulic hoses along the lift columns.

Step 4: Site Layout and Positioning

Floor Plan and Alignment

Guides for determining lift placement and using chalk lines for accurate post alignment.

Column Installation and Anchoring

Powerside Column Installation

Steps for drilling, anchoring, and shimming the powerside column.

Offside Column Installation

Instructions for positioning and securing the offside column.

Assembly and Power Unit Mounting

Overhead Assembly Installation

Steps for lifting and bolting the overhead assembly onto the columns.

Hydraulic Power Unit Installation

Instructions for attaching the power unit and filling the reservoir.

Step 9: Safety Systems Installation

Safety Weldment and Cable Routing

Instructions for installing safety weldments and routing the safety cable.

Safety Cable Routing Details

Safety Cable Path through Column

Illustrates routing the safety cable through the column and sheave.

Securing the Safety Cable

Explains how to tighten jam nuts to secure the safety cable.

Hydraulic Hose and Equalizer Cable Installation

Hydraulic Hose Connections

Steps for connecting hydraulic hoses to the tee fitting and crossover hose.

Equalizer Cable Routing and Tensioning

Instructions for routing equalizer cables and ensuring equal tension.

Step 12: Overhead Microswitch Installation

Microswitch Mounting and Wiring

Details on installing the microswitch and routing its wire.

Step 13: Power Unit Hose and Safety Cover

Power Unit Hose Routing

Instructions for routing the power unit hydraulic hose through clips.

Power Side Safety Cover Installation

Steps for positioning and securing the power side safety cover.

Step 14: Lift Arm Installation and Restraint Check

Lift Arm and Pin Installation

Steps for inserting lift arms, pins, and snap rings.

Arm Restraint Gear Engagement

Instructions for ensuring proper engagement of arm restraint gears.

Pre-Operation Checks: Arm Restraints and Leveling

Arm Restraint Inspection

Emphasizes daily inspection of arm restraint assemblies.

Lift Leveling Procedure

Instructions on checking and ensuring lift arms are level.

Carriage Stop Bolt Installation

Top Carriage-Stop Bolt Installation

Instructions for reinstalling and torquing carriage-stop bolts.

Power Unit Installation Notes and Wiring

Important Power Unit Installation Notes

Guidelines on oil, water, electrical hookup, and motor operation.

Electrical Wiring Diagrams

Diagrams for single-phase and three-phase power unit wiring.

Step 15 & 16: Power Connection and Final Checks

Power Unit Electrical Connection

Instructions for connecting the power supply to the motor.

Post-Installation Checklist

Steps for checking fluid, lubrication, cables, safeties, and performing operational tests.

Step 17 & 18: Lubrication and Cylinder Bleeding

Lubrication Points

Illustrates and lists points requiring lubrication.

Hydraulic Cylinder Bleeding Procedure

Steps to bleed trapped air from the hydraulic cylinders.

Step 19: Operation Instructions and Safety

Owner/Employer Responsibilities

Outlines employer duties regarding operator training and lift maintenance.

General Lift Operation Safety

Key safety rules for operating the lift and positioning vehicles.

Lift Operation Safety and Raising Procedure

Vehicle Loading and Positioning

Guidelines for carefully loading and positioning vehicles onto the lift.

Raising the Lift Safely

Procedures for safely raising the lift with a vehicle.

Vehicle Lifting Points and Operation Safety

Typical Lifting Point Guide

Diagrams showing recommended lifting points for various vehicle types.

Safe Vehicle Loading and Raising

Precautions for loading, positioning, and raising vehicles.

Lowering Procedure and Maintenance

Safe Lift Lowering Procedure

Steps for safely lowering the lift and vehicle.

Routine Maintenance Checks

Recommendations for ongoing maintenance like bolt tightening and cleaning.

Operation Safety: Loading and Maintenance Schedule

Symmetric Vehicle Loading Guidelines

Advice on distributing vehicle weight symmetrically on the lift.

Periodic Maintenance Tasks

Lists daily, weekly, monthly, and semi-annual maintenance checks.

Lift Operation Summaries and Monthly Maintenance

Quick Guide to Raising and Lowering

Condensed instructions for raising and lowering the lift.

Monthly Maintenance Requirements

Specific checks and tasks to be performed monthly.

Wire Rope Inspection and Maintenance

Wire Rope Replacement Criteria

Guidelines on when to replace lifting cables due to wear or damage.

Identifying Broken Wires

Methods for inspecting wire rope for broken wires and other damage.

Safe Lift Operation Principles

Operator Training and Responsibilities

Key training aspects and responsibilities for safe lift operation.

Pre-Operation Safety Checks

Essential checks before operating the lift, including vehicle placement and clearances.

Critical Lift Operation Safety Rules

Operational Safety Precautions

Rules regarding movement, personnel clearance, and maintaining control.

Equipment Condition and Alertness

Emphasizes checking parts, staying alert, and proper use of the lift.

Troubleshooting Common Issues

Lift Operation Problems and Solutions

Table detailing common lift issues and recommended actions to resolve them.

Lift Capacity and Safety Labels

Maximum Lifting Capacity Information

Details on maximum lifting capacity and overloading warnings.

Lift Operation Summary and Certifications

Simplified Lift Operation Guide

Concise instructions for raising and lowering the lift.

Lift Certifications and Notices

Information on lift certifications and notices regarding attachments.

D2-12C Lift Superstructure Parts

Superstructure Component Identification

Lists part numbers for post assemblies and top trough.

Clearfloor Parts Bag Details

Clearfloor Parts Identification

Lists and illustrates parts included in the clearfloor parts bag.

D2-12C Parts Box Details

Parts Box Component Breakdown

Lists and illustrates components found in the parts box.

D2-12C Parts Box Component List

Detailed Parts List with Quantities

Comprehensive list of parts for the D2-12C parts box with quantities.

D2-15C Lift Superstructure Parts