Honeywell MP909E Installation Instructions

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The MP909E Positive Positioner Retrofit Kit Part No. 14004 137-001 (Fig. I), is designed for upgrading MP909E Damper Operators that have a 5 to 10 psi (34 to 69 kPa) spring range. The addition of the positive posi­ tioner converts the MP909E to the equivalent of an

These operators are used for proportional control of variable volume terminal units, mixing boxes, and small or medium sized dampers. Adding the positive positioner

to your 5 to 10 psi (34 to 69 kPa) MP909E updates your operator to the latest model.

12-82	Form No 04

	FACTORY
POSITIONER BRACKET ASSEMBLY	CALIBRATION

FEEDBACK SPRING KIT

TUBE

+ -- CLAMP

LEVER

NUT

Fig. 1 MP909E Positive Positioner Retrofit Kit, Par t No. 14004137-00 1.

1, Reduce branch line air pressure to operator by adjusting controller to obtain 0 psi (0 LP, or by removing connected tubing.

2. emove linkage from operator shaft.

3Thread the nut provided in the kit (Fig. 1) all the way onto the operator shaft.

Install lever on operator shaft.

5. Reinstall linkage.

Secure positioner and bracket assembly in place with clamp as shown in Figure 2.

7.Install tubing from operator inlet fitting to posi­ tioner branch port.

8.Slide the desired feedback spring of 3, 5, or 10 psi (21, 34, or 69 kPa) through the bracket and hook it to the lever and to the positioner.

9.Set start point on positioner by turning the knob to any setting between and 13 psi (10 and 90 kPa), Each detent on the knob equals psi

10Connect main and branch lines and perform opera­ tional check.

11. Adjust start point if necessary.

NOTE: Follow same procedure to convert new MP909E operators disregarding Step 1.

85-0104