Ingersoll-Rand BMDLLN Series, User Manual

EN

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Inspections and Maintenance

WARNING

Maintenance may be carried out only by skilled and authorized 

personnel.

The user must visually inspect the Balancer on a regular basis 

(such as, for instance, at each work shift) especially to check the 

state of suspensions A and S (Fig.1), the fixing screws and the 

self-locking systems (if used), and the condition of the hooks and 

cable.

WARNING

Should the cable have the defects shown in Fig.8, replace it 

immediately.

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Do not make any modification to the cable unit and, specifically, 

DO NOT SHORTEN the cable: if needed, please get in touch with 

Ingersoll Rand.

Check that the cable’s movement is smooth and that it does not 

make any strange noises.

Do not lubricate the Balancer with flammable or volatile fluids.

Do not remove any labels. Replace any damaged labels.

The Balancer must be inspected at least once a year by skilled, 

authorized personnel.

WARNING

Never disassemble the Balancer. Maintenance is to be carried out 

only by skilled, authorized personnel. 

The Balancer must be disposed of complying with prevailing 

rules and regulations at the end of its work life.

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Safety devices

The Balancer is fitted with a safety device that trips if the drum’s 

spring breaks and stops operations to prevent the hanging load from 

falling. If you are unable to move the hanging tool up or down using 

moderate force, 

DO NOT continue but contact our technical service at once. 

NOTE: the Balancer locks even if the drum spring is completely 

discharged. To restore working efficiency, attempt to charge the 

spring as outlined in paragraph “Adjusting the Balancer”. If the 

Balancer does not release, 

DO NOT do anything but contact the technical service at once.

To enable the Balancer to balance heavier loads, use wrench D 

to turn the knob 6 counterclockwise, identified by symbol “+” as 

shown in the figure (Fig.2). For lighter loads, press the end of the 

spring 9 (Fig.) and turn it clockwise, identified by symbol “-” as 

shown in the figure (Fig.). 

WARNING

Do not use the wrench on knob 6 to decrease the load. (The 

latching system could break if you force the knob using the 

wrench in the load-decreasing direction).

After having adjusted the load, check that the cable slides freely 

for its entire length: the movement must not be restricted when 

the spring has wound all the way. Check the stroke often and at 

different speeds.

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Only For Model Series BMDLLN 

BMDLLN models are fitted with a mechanism that locks the 

rewinding of the cable. This permits working without the cable 

traction, for instance inside a car (Fig. 7). The locking is achieved 

through the slow upward movement of the tool.

In order to release the rotation of the drum, pull the tool slightly 

downwards but make it go back up quickly.

In order to prevent undesired locking, it should go up at a suitable 

speed.

The locking kinematism may be neutralized by tightening the 

screw (25) all the way while the load goes up and down (Fig. 6).

NOTE: Should the Balancer’s capacity of supporting a hanging load 

decrease, this could mean that the spring of the drum is about to 

break. 

WARNING

Do not modify Balancer adjustment to make it hold up the 

load in all cases but contact skilled personnel in charge of 

maintenance at once.

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Adjusting the Balancer