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11 

BOLT TORQUE RECOMMENDATIONS 

FOR MODELS WITH METAL HEADS AND PLASTIC DIAPHRAGMS (1) (2)

 

Piston Dia. 

Reagent Head Bolts 

Tie Bar Bolts 

.250-.500 

.625-1.50 

240-300 in. lbs     276-345 kg.m 

60-70 in. lbs.     .69-81 kg.-m 

45-65 in. lbs.     .52-75kg.-m 

25-45 in. lbs.     .29-52 kg.-m 

(1)

 

Metal diaphragm models/reagent head bolts can be tightened to normal range compatible with bolt sizes. Tie bar bolt 

torque same as for plastic diaphragm models. 

(2)

 

DO NOT use these torque ratings for models with plastic reagent head and valve housings. Bolts on these models 

should only be hand tightened for adequate seal at their lower pressure rating.

 

 

4.2  Repriming Hydraulic 

(Figure 3 & 4)

 

1.

 

Reassemble diaphragm and reagent head, tightening all bolts securely and evenly. Use reliable torque wrench 

to valves indicated. 

2.

 

Reassemble valve housing and take care in inserting gaskets that they are properly positioned. Replace valves, 

seats and seat gaskets incorrect orientation for direction of flow (see Figure 8-11) and tighten securely. 

3.

 

Connect inlet piping. 

4.

 

With discharge line bypassed around process or to drain, start motor and prime reagent head. 

5.

 

Set stroke length adjustment to maximum stroke. 

6.

 

Stop the pump and remove the manual bleed/auto bleed valve assembly from pump head. 

7.

 

Place a plastic pipette (i.e. turkey baster) in the manual bleed/auto bleed valve hole of the pump head. Fill 

pipette with oil being used in gearbox. 

8.

 

Start the pump. As the pump operates each suction stroke of the pump will draw in oil from pipette and each 

discharge stroke will expel air from the pump head. 

9.

 

Add oil to pipette as necessary until no more air is expelled from the pump head and oil is moving up and 

down pipette with piston movement. 

10.

 

Shut down the pump and manually retract the piston to full rearward position. (This may be done by 

removing coupling cover and manually turning motor shaft.) 

11.

 

Remove the pipette and replace the manual bleed/auto bleed valve assembly. 

 

4.3  Piston and Diaphragm Alignment 

12.

 

Manually rotate motor shaft until piston is in full forward position. 

13.

 

If piston does not set up before full forward position is obtained then pump piston and diaphragm is phased. 

14.

 

If piston set up at some point prior to achieving full forward position then loosen up bypass valve setting 

(keeping track of the number of turns) until piston slips forward forcing excess oil from the pump head 

through the bypass valve. Move piston to full forward position. 

15.

 

Retighten bypass valve to previous setting, but do not exceed MAX OPERATING PRESSURE indicated on 

pump nameplate. 

16.

 

Hydraulics is primed and piston is phased with diaphragm. 

17.

 

Add PULSAlube oil to front and rear reservoirs to bring oil level up to top of partition. 

18.

 

After the pump has run for several hours, again bleed manual air vent for any last trace of air. 

 

 

 

 

 

 

 

Summary of Contents for Pulsafeeder Pulsa 680

Page 1: ...i Bulletin IOM 680 Installation Operation Maintenance Instruction IOM 680 Rev B...

Page 2: ...elief Valve 4 1 7 Bleeder Valve 4 1 8 Reagent Head Assemblies 4 2 INSTALLATION 5 2 1 Check the Shipment 5 2 2 Locating the 680 Pumps 5 2 3 Flooded Suction Desirable 5 2 4 Discharge Pressure 5 2 5 Pipi...

Page 3: ...atic Bleed Valve 14 4 9 Manual Bleed Valve 15 4 10 Lubricating Instructions 15 4 11 Oil Capacity 16 5 STORAGE INSTRUCTIONS 16 5 1 Short Term 16 5 2 Long Term 16 5 3 Maintenance and KOPkits 17 5 4 Orde...

Page 4: ...he liquid chemical being pumped through a suction check valve on the suction stroke of the plunger and discharges a like amount of liquid chemical through a discharge check valve on a forward or disch...

Page 5: ...eeder Valves within the Hydraulic System Figures No 3 and Figure No 4 show the locations of valves according to piston diameter and diaphragm style selected Make Up Valve Any leakage past the plunger...

Page 6: ...3...

Page 7: ...air or oil vapors from ahead of the piston and maintain a solid hydraulic medium to transmit infinite movements of the piston to the diaphragm In large piston models where adequate oil movement exists...

Page 8: ...ng down However it is important to have a solid and level foundation so that a minimum of vibration is evident Continual vibration can loosen gaskets and pipe connections 2 3 Flooded Suction Desirable...

Page 9: ...n on the pump fittings use pipe straps and braces Do not allow the weight of the piping to be supported by a pipe union the valve fitting or other portion of the pump head or leaks will occur An air l...

Page 10: ...OT run pump without oil 2 DO NOT remove main gear box cover while pump is running 3 DO NOT run pump with coupling guard removed 4 DO NOT put hands or fingers in gear box or reservoir when pump is runn...

Page 11: ...d then lifting the valve out Fill the head with process fluid or a compatible liquid then replace the valve in the same position and retighten the tie bar bolts 4 The pump is now ready for start up 5...

Page 12: ...nance The preceding instructions have assisted you in proper installation and start up of your 680 pump The following sections are arranged to assist in maintaining proper pump operation and troublesh...

Page 13: ...ement of the diaphragm 9 On models which have an insert dish plate make sure the dish plate is reset in the pump head with the cavity on the diaphragm side and one of the four holes closest to the out...

Page 14: ...bleed auto bleed valve hole of the pump head Fill pipette with oil being used in gearbox 8 Start the pump As the pump operates each suction stroke of the pump will draw in oil from pipette and each d...

Page 15: ...fter cleaning or replacement be sure to use new seals Separate the valve assembly and examine the components for wear damage or accumulation of solids A ball valve seat should have a sharp 90 edge fre...

Page 16: ...st be reset 4 The pump should be restarted and check periodically for excessive air exiting from the bleeder valve The procedure should be repeated as necessary Valve removal replacement can be accomp...

Page 17: ...ger The vacuum created between the diaphragm and the plunger upset the make up valve allowing oil to replace the vacuum condition This excess oil will be displaced through the bypass valve on the disc...

Page 18: ...tamination for extended periods of time A periodic six month check should be made for oil level and possible contamination Under sustained conditions of high humidity or if wear is present the oil can...

Page 19: ...ection and then start up in accordance with instructions in this manual 5 2 Long Term For storage longer than 12 months in addition to the above the following procedures should be followed 1 Every 12...

Page 20: ...ube oil should be on hand for periodic oil changes 5 4 Ordering Parts When ordering parts always specify 1 Pump model and serial number stamped on nameplate 2 Part number from parts list or KOPkit num...

Page 21: ...fer to Repriming Hydraulic System 10 See check valve illustrations Low Delivery 1 Motor Speed too low 2 Check valves worn or dirty 3 Hydraulic Bypass valve opening each stroke 4 Calibration system err...

Page 22: ...gm ruptured 2 Leaky oil seal 3 Cover gasket leaks 4 Pump head gasket leaks 5 Gear box overfilled 1 Replace 2 Replace 3 Replace or tighten 4 Replace Tighten pump head bolts Seal with permatex 5 Remove...

Page 23: ...improve NPSHa NET Positive Suction Head available characteristics of the suction piping system On the discharge line it will reduce dangerous peak pressures eliminate shock waves and if of sufficient...

Page 24: ...tream PROCEDURE Pre Charge Procedure for Suction Installation 1 Isolate accumulator from line 2 Carefully drain off process fluid by opening a drain valve see recommended piping arrangement attached 3...

Page 25: ...cycling A TFE diaphragm offering maximum chemical protection and service life seals spring and bonnet from product This diaphragm seals directly on a replaceable seat Be sure to install with fluid fl...

Page 26: ...23 IOM 680 0922 Rev B...

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