Direction Of Rotation; Oil Level - Speedaire 40HU29 Instructions Manual

Direction of Rotation

NOTE: Improper rotation will result in failure of
compressor.
The direction of rotation must be
counterclockwise (as shown by the arrow
on the air end in Figure 7) while facing the
flywheel side of the pump.
The direction of rotation of 3 phase motors can
be reversed by interchanging any two motor-
line leads.
Checking Rotation Direction
Rotation Direction: Rotating to the left
(counterclockwise) looking at the shaft.
the electric motor drive. For this purpose, switch on the drive motor briefly and then switch off again
immediately. Rotation for more than 2 seconds in the wrong rotation direction will destroy the screw
compressor. If necessary, reverse the connections of the connecting cable.
Lubrication
Quick Reference
Recommended Oil (2 Options)
Single viscosity ISO46 rotary screw compressor oil (part number 40HU83 - 1 gallon
container). Available from Grainger at www.grainger.com
Oil Capacity
1.5 gallons for 5 HP to 15 HP. 2.1 gallons for 20 HP to 25 HP.

Oil Level

all pressure from the system before
attempting to install, service, relocate or
perform any maintenance.
screw plug can be hotter than 175° F (80°
C)! Wear personal safety equipment!
approximately 3/4 inch higher than with
cold oil shortly after discharging.
An important factor for the operating safety
of the compressor system is the oil level in
the oil reservoir. The oil level check must
be performed before initial operation of the
compressor and then repeated every 100
operating hours.
12
Figure 7 - Direction of rotation
The rotation direction of the screw compressor system must be checked during
initial start-up and each time changes are made to the electrical supply line of
THIS UNIT DOES NOT CONTAIN OIL. Before operating compressor, fill system with
40HU83 screw oil.
Using any other thype of oil may shorten pump life, overload the motore, and
result in damage.
Disconnect, tag
RISK OF BURNS! The
unit parts, oil, and
With hot oil, the
oil level can be
Figure 8 - Oil Level
and lock out power source then release
Oil Plug
Maximum
(cold oil level)
Minimum
(cold oil level)
Rotation