REINSTALLATION PROCEDURES CONTINUED
Step Six:
Stand unit on its base once again with the motor shaft towards you. use a 13/16” open end wrench
to tighten the 90º hose fittings onto the brass hex nipples previously installed onto the motor
through the motor housing. be sure to coat threaded joints with loctite #545 Pneumatic Seal or
equivalent product to assure leak free installation of air hose fitting. attach hose to the fittings by
pushing onto ferrule until they snap-lock into place. tug on hose gently. if hoses release, push
more firmly into the ferrule until you hear it snap lock into place.
Note: orient the unit so the back of the motor is facing you. install the hose on the left into the top air motor
fitting. install the hose on the right into the bottom air motor fitting.
Step Seven: test air connections by attaching unit to air supply line. inspect hose connections for leaks. if a
leak is found, repeat sealing instructions outlined in Step Six.
CAUTION:
Never touch the spinning motor shaft – Severe personal injury will result.
Step eight: lay unit down with the motor shaft facing up. install fan blade with the flat part of the shaft
aligned with the flat guide on the fan hub. Place 3/8” flat washer on top of the fan hub before
securing the nut on the shaft with a 9/16” open end wrench. tighten until you see one thread
exposed above the installed nylon nut. you may need to hold the blade by wedging it to prevent
rotation during this procedure.
CAUTION:
Never operate the unit with the fan blade installed without first installing the safety grills –
Severe personal injury will result.
Step Nine: install grill, duct ring and grounding stud ring to the front of the unit’s housing. assemble bolt
with flat washer first, then the ground stud ring and finally the star washer. this bolt assembly is
then threaded through the grill and duct ring into unit’s housing. repeat steps to install grill, duct
ring and grounding stud ring to the rear of unit's housing. you should use a 1/4” ratchet and a
7/32” socket for this procedure.
Note: there are three bolts used to attach each grill and duct ring. the longer of the three bolts is used to
attach the grounding stud ring to the unit’s housing.
CAUTION:
be sure to reattach flat washer, grounding wire stud ring and star washer to insure proper
ground continuity of the unit.
Step ten:
connect completely reassembled fan to air supply line and preform a final inspection of unit to
insure proper operation.
Step eleven:insure ground continuity with a multi meter. test with one lead attached to the grounding stud,
located on the coupler plate, and complete the circuit by touching the secondary lead to the
following points while noting meter response:
1. the rivet holding the right side of the safety label in place.
2. the upper left corner rivet holding serial plate in place.
3. any coupler plate rivet.
4. the front and rear grills. test one of the bolts not connected to the ground wire.
5. back of motor. (long probe will be required to make contact.)
Note: Some resistance may be present when testing various points. the objective of this test is to assure that
all wires removed are properly reattached.
CAUTION:
this unit is ul/cul listed for use in hazardous locations. the grounding system links metal
components together. if you fail to properly reattach grounding stud rings, washers, star
washers and bolts, static electric build-up can result. the ul/cul listing for this unit will
also be null and void.
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