Wilroy IOM
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WRA 1: 316 SS ModelConstruction BaseSelectionSE: NN: None BB: Base NN: None ControlMethod ConnectionsNN: 1/4" NPT(F) Discharge1/2" NPT(M) Suction 11: MK XIIA 2N: .250" plunger, no stroke adjuster 5N: .500" plunger, no stroke adjuster PlungerConfiguration DiaphragmRupture Detection 2M: .250" plunger with 316 SS micrometer knob None 5M: .500" plunger with 316 SS micrometer knob C5: Rupture Detection Bracket & Gauge SN: Rupture Detection Gauge & Nema 4 switch S7: Rupture Detection Gauge & Nema 7 switch >

SectionDescriptionPage Pump Model Number Inside Cover 1.0FUNCTIONAL DESCRIPTION > 1 1.1 Physical Description > 1 1.2 Capabilities and Specifications > 1 1.3 General Operating Sequence > 3 2.0INSTALLATION OF PUMP AND CONTROLLER > 3 2.1 General > 3 2.2 Pump Mounting > 4 2.3 Typical Installation > 4 2.4 Supply Reservoir > 4 2.5 Relief Valve > 4 3.0START UP, OPERATION & SHUTDOWN > 4 3.1 General > 4 3.2 Startup > 5 3.3 Operation > 5 3.4 Shutdown and Storage > 6 4.0MAINTENANCE > 6 4.1 General > 6 4.2 Disassembly and Assembly > 6 4.3 Preventive Maintenance > 12 4.4 Troubleshooting > 12 5.0REPAIR...

The pump will begin to cycle after thecontroller supply is opened. Leave the controller at the 100 setting and let the pump cycle for 5-10 minutes. Gradually increase the pumps stroke adjuster from 0% capacity setting to NOTE: Thecontroller will not operate properly if it is set at a stroke rate greater than 45 SPM.10. 8. 9. On the pump, turn the strokeadjustment knob from its current setting to 0% capacity setting. Each full revolution is 10% adjustment. Turn the air/gas source to ON and openthe shutoff valve supplying the controller. The controller will begin to cycle. Due to differing...

To set the stroke rate correctly, you musttime the exhausts as they leave the bottom of the controller. 3. 2. Adjust the knob to correct the stroke rateas needed. Confirm by timing the stroke rate. Count the number of pump strokes duringa one minute interval, using a timer such as a stop watch to determine the actual stroke rate. 4. Repeat the above steps until you get thecorrect stroke rate. EXAMPLE: To get a stroke rate of 22 strokes per minute, set the knob to 50 which should produce approximately 25 strokes per minute. Then reduce the rate by resetting the knob to 48. If this produces...

Figure 10 Fig. 14 Figure 18 3. Lift off the upper body and diaphragm.Lift out the inner diaphragm assembly. Set aside. (Fig. 11 & 12) Fig. 15 Figure 19 6. Return controller body as before andunscrew lower seat with a 3/16" hex wrench. Remove lower seat. (Fig. 16 & 17) Figure 11 Figure 20 Use a small screw driver or hex wrench placed through the inner spacer holes and with a 9/16" wrench unscrew the upper seat and lower diaphragm. (Fig. 21) Place the top diaphragm stop (and innersleeve with screw driver/hex wrench) into a soft jaw vice with a vee notch. Lightly clamp top diaphragm stop. 4....

9. To install the inner assembly into thelower controller body, be sure to reinstall the lower seat and spool spring. Make sure the capillary holes in > Unscrew inner sleeve. (Fig. 22) Remove the mid diaphragm from thetop diaphragm stop. (Fig. 23) Remove the lower diaphragm from theupper seat. (Fig. 24) 8. Clean all metal parts. Inspect and orreplace all three diaphragms. To reassemble, push the mid diaphragm onto the top diaphragm stop. Push the lower diaphragm onto the upper seat. Thread the inner spacer onto these (2) two diaphragm assemblies. With a screw driver and 9/16" wrench,...

4. Clean all components with anappropriate solvent. Contact your Williams distributor or Milton Roy Company for a recommended solvent. Inspect all the parts and replace them if they are worn. 3. Using a 1-1/8" socket wrench, removethe bore cartridge subassembly consisting of components 130, 170 and 160. Remove the O-ring (160) from the bore cartridge. Do not remove the seal (130), which is pressed into the bore cartridge (170). This is an unpressurized splash seal and requires a special tool in insert it. > Figure 28 1. Using a 9/64" hex wrench, remove the6 screws (90) and washers (100)...

5. 4. Insert the spring (270) through thestroke adjuster body (260) and slide it over the piston (240). Using a 1-1/4" deep socket torquewrench, tighten the stroke adjuster body assembly to 25 ft-lbs (34 N-m).DO NOT OVERTIGHTEN, as this may cause binding of the internal components. 6. 7. Slide the O-ring (355) into the groove ofthe control rod (340). Apply O-ring lube (or equivalent grease) to the outside surface of the O-ring. Insert the control rod subassembly intothe stroke adjuster body. 8. Apply a removable thread-lockingadhesive to the set-screw (320). With the control rod assembly...

13. Refer to sections 3.2 and 3.3 for theappropriate startup and operation procedures. 12. > Insert the drain plugs (150) into thehousing, using thread sealing compound. Discard the old oil and fill the pump with the oil specified in section 1.2.2.1. 11. Adjust the knob (310) to the desiredsetting and insert the set-screw (350) into the knob. Thread the set-screw into the knob until it contacts the stroke adjuster body (260). Tighten the set- screw so as to lock the knob in place. Reassemble the relief valve as follows: 4. Insert the O-ring (430) into the end ofthe seat (420). Reassemble...

PROBLEMPOSSIBLE CAUSE(S)CORRECTIVE ACTIONCONTROLLER NOT Foreign material in controllerՕPut finger over exhaust port; alternately seal & vent port to OSCILLATING clear exhaust valve.No air/gas supplyՕConnect a separate pressure gauge to the port on the controller which is opposite the supply line; verify that the required supply pressure is attained.Supply pressure too high or too lowՕReset regulator to proper pressure. Too much pressure drop in air/gas lineՕIncrease the connecting tube size and/or clean the air lines. Stroke rate valve open too muchՕDisconnect air/gas supply. Rotate stroke...