15
General Maintenance Points
Below is a matrix of general maintenance points and intervals. These intervals are general
recommendations based on normal operation. These intervals should be adjusted during use in
extreme conditions or extended periods of used.
MAINTENANCE POINT INTERVAL
INSPECT SEALS DAILY
INPECT LINERS DAILY
INSPECT WHEEL KIT DAILY
INSPECT POWER CHORD DAILY
INSPECT DUST HOSE DAILY
CHECK/ADJUST BELT TENSION EVERY 4-6 HOURS
GREASE BEARING UNIT EVERY 50 HOURS
Greasing the Bearing Unit
The bearing unit is located on the back of the blast housing. The unit must receive regular
lubrication to operate properly. Blastpro Manufacturing recommends using Mobil Polyrex EM
grease.
There are grease fittings at both ends of the bearing unit. Each fitting should receive several
pumps of grease. Once the unit is greased, run the unit without blasting for 10-15 minutes. This
will help distribute the grease evenly. Care should be taken not to over-grease the unit.
Checking Belt Tension
Correct blast wheel belt tension is required to maximize efficiency and prolong the life of the
belts, bearing unit and sheaves. If the belt does not have enough tension there will not be proper
power transmission from the motor to the blast wheel. An overly tight, or loose, condition can
lead to accelerated belt wear.
When checking the belt tension, the belt should deflect 1/64” per inch of center-to-center
distance between the sheaves. The optimal force for testing the belt is 11 lbs (min 9, max 13).
When possible, the use of a belt tension tester is recommended.
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