Novatek SRAT5A, Operation & Maintenance Manual

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
Use a minimum
3/8” diameter air hose in conjunction with a minimum of 30 SCFM of compressed air rated at 90
psi. Assure your fitting is
compatible to the tool’s 3/8” MQC air inlet plug. A supply of clean, dry air is required and
suitable filter lubrication is recommended for trouble free use.
WARNING Ai
r inlet plugs less than 3/8” will not supply sufficient air flow to the grinders for satisfactory operation.

Tighten all hose connector fittings and blow out hose to insure that all debris is purged from the supply line.

Put a few drops of light machine oil into the air inlet of the tool on a daily basis prior to start up and at shut down.
(See recommended air tool lubricants.)

Remove screw (#24) and add a few drops of gear lube into the gear head.
WARNING Failure to lubricate the gear head may result in unsatisfactory performance, premature failure and may
void the warranty.

The air motor drive unit requires the correct air input fitting to be installed (part no. 818.0255) to insure the 3/8” plug
size is used.
ELECTRIC POWERED UNITS
Insure that 110 volt / 10 amp electrical power is available. Power cords should be limited to 50 feet in length and be a
minimum of 14 gauges / three wires.

Daily inspection of the electrically powered grinder is required to insure safe and reliable operation. The daily
inspection consists of the following:
- Wipe down the outside surface of the R/A gear drive until and electric motor enclosure to remove
accumulated dirt, dust and other residue from the grinder preceding cleaning operation.
- Check for loose or damaged parts. Tighten or replace as necessary.
- Clear out any dust or debris from the inside of the motor case by means of compressed air jet through the
cover case cooling slots.
- Test run the motor to insure no arcing is indicated between the brush and commutator. If arcing takes
placed and additional air jet cleaning does not correct the problem, contact Novatek or an authorized
Novatek distributor.
- Check the R/A gear drive by rotation the output shaft to determine any roughness in the bearing or gear
meshing during rotation. If roughness is indicated, inspect the tool per the corrective action section of this
manual.
Periodic Inspections and Maintenance Requirements
Electric motor arcing between the commutator and brushes indicated poor contact due to dirt accumulation, worn brushes or
worn commutator.
A. Clear out any dust or debris from the inside of the motor case by means of compressed air jet through the cover
case cooling slots.
B. If poor operation continues, contact Novatek or an authorized Novatek distributor.
If roughness of the R/A gear is detected, please contact Novatek or an authorized Novatek distributor.
CLEANING, INSPECTION AND PARTS REPLACEMENT
All parts should be collected in order of disassembly, cleaned in a suitable solvent and inspected for damage or excessive
wear. All renewal parts required should be ordered to support reassembly and return to service. It should be noted that
certain parts should be stocked, based on experience, to support a rapid repair cycle.
A. Press bearings into housings and insert spacer into rear housing with taper facing away from housing.
B. Insert threaded end or rotor into rear housing and press fully home using hol
e “C”.
C. Fit vanes into rotor. Place cylinder over rotor, locating pin in small hole in rear housing.
D. Locale front bearing housing over splines and use bush to push bearing and housing fully home.
E. Grip splines in soft jaws and screw on nut, left hand thread.
F. Slide assembly into motor housing so that approximately 7mm of front bearing housing can be seen protruding,
replace spacer.
G. In the event that vanes are not free to move in rotor slots, they should be replaced with a new set.
H. Reassemble throttle by fitting O-ring to valve stem. Fit valve stem, spring, O-ring and throttle plug.
I.
Fit lever together with spring if fitted and pin. Screw the throttle assembly into rear of motor housing.