The unit is designed to stand up to the most demanding applications in terms of health and safety (food processing, chemicals and petrochemicals and clean rooms, among others).
The patented Rotorair motor, a two-part gear motor, gives it a “service life of over 10 years with regular maintenance,” said Ingersoll Rand. It is designed to lift loads from 250 to 980kg.
Key elements to its design include no air lubrication, electro-galvanized chain, stainless steel casings and the possibility of high-pressure cleaning. The Palair Premium was the first chain type air hoist to be approved by the USDA (US Department of Agriculture), according to the manufacturer.
In its ATEX version, all the moving mechanical parts have been redesigned in bronze or stainless steel, the motor and the mechanical systems have been placed inside a sealed casing, a ventilation system has been added to the motor to eliminate the risk of creation of gas pockets under pressure, the trolley wheels can be made of bronze or stainless steel as desired, and all the nuts and bolts are made of stainless steel.
An ATEX zone 1 version is also available as an option.
The Rotorair motor, “tried and tested on several thousand units in service all over the world,” has just two meshed moving gears, made of high-strength composite materials.
Ingersoll Rand said: “It avoids the risks of rotor wear found in vane motors. This means that Rotorair motors are practically maintenance-free. They have high starting torques and excellent operating flexibility in difficult positions.”
ATEX Palair Premium air hoists can be pressure cleaned (water or steam), because all the hollow spots likely to retain water are fitted with drain channels.
They feature a load limiter as standard, together with an automatic self-adjusting disc brake, protected by a sealed casing.
