Parker DA, Owner'S Manual

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Media Bag Dust/Mist Collector Models DA, DB, DBM
8
4.3 Electrical Requirements
Model DA (front-load)
Units with single phase (115, 208-230V/1/60Hz) are prewired for proper rotation and line hook-up.
Simply hook up to a single-phase input circuit and the unit is ready for operation. (See wiring diagram, page 7.)
Model DB/DBM (side-load)
The only electrical connection required is a power source to the motor leads as shown by the wiring diagram
inside the electrical box.
The field wiring box has standard knockouts for incoming power leads. Make connections as indicated by the
“Supply Connection Location” label inside the field wiring box.
The power switch for operating the unit and any fused disconnect, overload relays or other controls required
by the National Electric Code or local codes must be supplied by the customer (not supplied as part of the air
cleaner). The unit has been factory wired for the voltage requirement indicated to Parker by the customer.
(See wiring diagram, page 7.)
After the three-phase connection is made, check the actual direction of rotation of the blower wheel versus
the arrow on the blower housing. (See Figure 6 for drive set door access.) If the wheel is not rotating in the
proper direction, reverse the motor rotation by interchanging any two of the three AC input leads at the
terminal block.
Note: Even when running backwards, some air motion is noticeable. When the blower is rotating correctly,
the access door will be snapped shut by the strong negative pressure within the cabinet.
To adjust airflow, see Figure 7.
1. Disconnect power to blower.
2. To change the blower RPM (which results in a change in CFM), adjust variable pitch pulley on the motor by
loosening set screw “A” and rotating the “A” part of the pulley while holding the “B” part in place.
a. Figure 7A shows part “A” backed off two turns with set screw “A” in flat section which is the factory setting.
b. To increase the CFM, set vari-pitch pulley as shown in Figure 7B. To decrease the CFM,
set as shown in Figure 7C.
Figure 7
Motor Pulley Settings
Note: Always check belt tension after
changing pulley setting and adjust for
1/2” of movement at midpoint.
The ampere reading should not exceed
the FLA rating stamped on the unit
nameplate, after ductwork (if any) is
installed and the unit is operating.
(In order to avoid motor overload, a
starter must be installed by customer
- not supplied as part of air cleaner.)
!
W A R N I N G
Moving Parts - Disconnect power before servicing.
!
W A R N I N G
Risk of electrical shock.