Specifications

RP DUST COLLECTOR

PHOTOHELIC KIT INSTALLATION PROCEDURE

This Kit Includes:

1 ea. 38293-01 Photohelic Mounting Bracket

1 ea. P3643 0-10” w.c. Photohelic Gauge

2 ea. P2098 1/8” Male x 1/4” Barb Fitting

4 ea. P3543 1/4”-14 x 1 Self-taping Screw

10 ft. P1848 1/4” Clear Tubing

NOTE: When using a Photohelic on a dust collector installed outdoors, the gauge can not be mounted on the

unit. It must be mounted indoors. The gauge is not rated for outdoor use.

INSTALLATION:

1. Remove parts from package and inspect for any possible damage incurred during shipping.

2. Turn off dust collector and disconnect power to the unit.

3. Remove the plastic cover on the back of Photohelic Gauge.

4. Mount the Photohelic Gauge into the Photohelic Mounting Bracket and place the (2) male barb ﬁ ttings

in the pressure ports located on the side of the Photohelic Gauge.

5. Remove cover from electrical box so that wiring diagram on back of cover can be used.

6. Remove the two red wires that are connected to the Timer Board Pressure Switch Input and Relay CR1.

7. Wire the Photohelic Gauge as the electrical diagram shows in Detail “A” (see page 10) using the 3/4”

conduit opening on the Photohelic and the 3/4” knockout located on the electrical box. (Wire and

conduit supplied by others.)

8. Replace the cover back onto the Photohelic Gauge and mount the bracket using the (4) 1/4” self-taping

screws.

9. Using 1/4” clear tubing (Additional length can be purchased) connect the “LOW” pressure port on the

gauge to the clean air plenum and “HIGH” pressure port to the dirty air plenum.

10. You must place the enable/disable switch located on the timer board to the “DISABLE” position. This

will disable the after-pulse mode of the timer board.

11. Replace the cover on the electrical box and reconnect the power to the unit.

12. The right set point dial of the gauge should be positioned at the ﬁ lter differential set point you want the

Roto-pulse system to be enabled. The left should be positioned at the ﬁ lter differential set point you

want the Roto-pulse system disabled.

LOW HIGH

FIGURE 11