Ingersoll Rand HA1 Manuel D'installation page 5

Air System
The supply air must be clean, lubricated and free from water or
moisture. A minimum of 7.2 bar/724 kPa (105 psig) at the hoist motor
is required, during operation to provide rated hoist performance.
Air Lines
The minimum allowable hose size is 25 mm (1 in). Hose size is based
on a maximum of 15 m (50 ft) between the air supply and the hoist
motor. Contact your nearest distributor for recommended air line sizes
for distances greater than 15 m (50 ft). Before making final connections
to hoist inlet, all air supply lines should be purged with clean, moisture
free air. Supply lines should be as short and straight as installation
conditions will permit.
Long transmission lines and excessive use of fittings, elbows, tees,
globe valves etc. cause a reduction in pressure due to restrictions and
surface friction in the lines.
NOTICE
• Always use an air line filter and lubricator with the hoist.
Air Line Lubricator
Always use an air line lubricator with these hoists. Use a lubricator
having an inlet and outlet at least as large as the inlet on the hoist
motor. Install the air line lubricator as close to the air inlet on the hoist
motor as possible.
NOTICE
• Lubricator must be located no more than 3 m (10 ft) from the
hoist motor.
• Shut off air supply before filling air line lubricator.
The air line lubricator should be replenished daily and set to provide
lubrication at a minimum rate of 4 to 6 drops per minute adjusted at
maximum hoist speed, of SAE 10W oil or a good grade of hydraulic oil.
Air Line Filter
It is recommended that an air line strainer/filter be installed as close as
practical to the motor air inlet port to prevent dirt from entering the
motor. The strainer/filter should provide 20 micron filtration and
include a moisture trap. Clean the strainer/filter monthly to maintain its
operating efficiency.
Moisture in Air Lines
Moisture that reaches the air motor through the supply lines is the chief
factor in determining the length of time between service overhauls.
Moisture traps can help to eliminate moisture. Other methods, such as
an air receiver which collects moisture before it reaches the motor or an
aftercooler at the compressor that cools the air prior to distribution
through the supply lines, are also helpful.
Motor and Reducer Assemblies
HA1: Remove shipping 'O' Ring from breather on hoist motor and
trolley motor if equipped.
HA2: Remove shipping plugs from brake housing and reducer
assembly before operating hoist.
WARNING
• Failure to remove shipping 'O' Ring(s) or plugs may result in
premature failure of the motor seals.
Hoist and Trolley Motors
For optimum performance and maximum durability of parts, provide an
air supply to operate hoist and trolley motors with 7,2 bar/724 kPa at
4,67 cu.m/m (105 psig at 165 scfm) for HA1 units and 7,2 bar/724 kPa
at 8 cu.m/m (105 psig at 280 scfm) for HA2 units. The air motor should
be installed as near as possible to the compressor or air receiver.
Hoist Pendant
The pendant control is installed at the factory. Hose fittings on the
pendant are color coded to ensure correct assembly. Check all hose
connections are tight and that hoses are not twisted or crimped.
HA1 hoists use the standard two-lever pendant with emergency stop.
Refer to Dwg. MHP0671.
HA2 hoists use the Accu-trol
®
Accu-trol pendant manual, Form Number MHD56014, for correct
®
pendant hose connections.
• Disconnect air supply before performing any work on the hoist.
• Do not attempt to reverse air lines either at the pendant station or
hoist. This will give a false indication of operation which may result
in serious damage to the hoist.
Check strain relief chain is properly connected to the hoist and pendant
body.
• To avoid damaging the pendant hose, make sure the strain relief
chain, not the pendant hoses, is supporting the weight of the
pendant.
Emergency Stop Palm Valve
An emergency stop palm valve is provided on the pendant. The
emergency stop palm valve cuts off the air supply to the air operated
components of the hoist when the red pull/push button is depressed
(pushed in).
Overload Device
An overload device is required on all hoists with a rated capacity of
over 1 metric ton (2200 lbs) used for lifting applications.
The overload device is integrated into the hoist air motor and prevents
the hoist from lifting a load greater than the overload value listed in the
specifications chart. If an overload is detected, inlet supply air is
stopped and the hoist will not operate.
If the overload device is activated the load must be lowered and
reduced. Alternative methods should be used to accomplish the task. To
lower the load reset the hoist by pressing the "ON" button of the
emergency stop device and press the hoist control lever to lower.
Trolley Drive Assembly Run In Period
Maximum efficiency of the trolley drive worm gear is obtained after a
"run-in" period. The length of time required will depend on the load
applied and will be two to four hours at rated load and considerably
longer at lighter loads. (Overloading will not decrease the "run-in" time
and it may damage the worm gear.)
During "run-in" higher than normal temperature rise, and lower
efficiency and output torque can be expected.
Storing the Hoist
1. Always store the hoist in a no load condition.
2. Wipe off all dirt and water.
3. Oil the load chain, hook pins and hook latch.
4. Place in a dry location.
5. Plug hoist air inlet port.
6. Before returning hoist to service follow instructions for 'Hoists not
in Regular Service' in the "INSPECTION" section.
4
pendant (Dwg. MHP0756). Refer to the
WARNING
CAUTION