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Manual for NuPulse Bucket Milker & 3/4 HP Vacuum Pump

Assembly

 

1. Assemble vacuum pump onto the vacuum tank by placing pump on top of the tank so the inlet and outlet ports of the pump are over the vacuum tank inlets. Next place the carrying handle around the pump so that the mounting holes line up with the motor mounting holes at the pump end of the motor. The carrying handle may have to be bent slightly to get the holes to line up. Use the longer bolts at the handle mounting point. Use a flat washer under the head of the bolt and insert the bolt so the threads face up. Use a flat washer, lock washer and nut to secure the four mounting bolts. 
2. Assemble the manifold to the right hand port. 
3. Put the manifold assembly into the right hand port on top of the pump (across from the muffler). Thread 
the manifold assembly so the hose port is located over and facing the same way as the ports on the vacuum 
tank. 
4. Connect the pump to the vacuum tank by slipping the short length of tubing over the copper adapter on the pump and the top inlet of the vacuum tank. 
5. Assemble the milker unit by inserting the inflations into the shells. Pull the inflation through the end cap of the shell until the ring at the bottom of the inflation barrel is on the outside of the shell. 
BE CAREFUL NOT TO TWIST THE INFLATION WHILE  PULLING IT THROUGH THE SHELL. 
6. Attach the short rubber air tubes to the nipple on the shell (warming the tubes in hot water will make 
assembly easier). Next slip the inflations onto the claw base inlets and the short air tubes on the middle 
section inlets. 
7. Slide the snap clamp onto the 5/8" I.D. rubber milk hose and position it approximately 8" from the end. 
Place that end of the hose on the claw outlet. 
8. Place the rubber gasket in the bottom side of the lid and place the lid on the pail and lock it in place with the 
pail handle. Attach the free end of the rubber milk hose from the claw to one of the pail lid inlets. 
9. Repeat steps 5 - 8 if a second pail unit was ordered and attach the second unit's vacuum hose to the 
remaining inlet of the vacuum tank. 
 
If using only one unit, place flip-up rubber closure on unused nipple on pump canister. 
If these milker units are being used for Grade A milking, you may need to use a Check Valve Assembly in the vacuum line. 
Start-Up
1. Close the Snap Clamp on the milk hose to shut the vacuum off to the milker unit. 
2. Plug the vacuum pump power cord into a 110V outlet. The vacuum pump should start running. 
3. Within approximately 10 seconds, the pump should build up a vacuum in the tank and the vacuum 
regulator should open to admit air. This will be indicated by an audible hiss. The vacuum gauge should 
read between 10 and 15 inches of mercury. If the pump is running, but the above doesn't happen, check 
the following: 
(a) Plexi cover on end of vacuum tank is not sealed. Push cover firmly against tank. 
(b) Pail lid not sealing properly. Check lid gasket and positioning on pail. 
(c) Vacuum not turned off to milker units. Close snap clamps. 
(d) Vacuum regulator open too far. Turn adjusting nut inward while holding the adjusting screw with 
a screwdriver. 
(e) Air leaks. Check all hose connections on vacuum 
pump, etc., to be sure of tight fit with no air leaks. 
(f) Motor RPM too low. Refer to vacuum pump 
operating and maintenance instructions.
4. With vacuum pump operating properly, adjust the vacuum regulator to obtain a gauge reading of 12-1/2 
inches of mercury for Cows. (NOTE: For Goats and Sheep, vacuum regulator should read 10-1/2 inches of 
mercury.) To adjust, hold the regulator screw rigid with a screwdriver and loosen the lock nut. To increase 
the vacuum level turn the inner adjusting nut clockwise. To decrease the vacuum level turn the inner nut 
counter- clockwise. When the desired vacuum setting is attained, tighten the lock nut against the 
adjusting nut - this will prevent the setting from changing due to vibration. 
 
5. With the vacuum level set at 12-1/2 (Cows), or 10-1/2 (Goats/Sheep), open the snap clamp to turn on the 
vacuum to the milker unit. Place red inflation plug in each of the inflations and check the pulsation rate. 
The recommended pulsation rate with the unit in the non-milking (static) condition is: 
 Cows: 54-56 pulsations per minute 
 Goats: 75-85 pulsations per minute 
 Sheep: 120 pulsations per minute 
 
The pulsation rate on the NuPulse Milker Claw is adjusted by means of the adjusting cam on the pulsator 
diaphragm . To speed up the pulsation rate, turn the cam counter-clockwise which raises the adjusting pin. 
To slow down the pulsation rate, turn the cam clockwise. 
 
6. If you have two milker units, repeat Step #5 for the second unit. 
7. Disconnect power to the vacuum pump to shut it off. 
Operation
1. All milk contact surfaces should be washed and sanitized in an approved solution. Washing should be done 
immediately after milking is completed. Sanitizing should be done just prior to milking. 
2. After the pump is turned on and before milking is begun, the operator should check the following: 
(a) Vacuum gauge reads: 12-1/2 (Cows) or 10-1/2 (Goats/Sheep). 
(b) Pulsation rate is approximately: 
 Cows: 54-56 per minute 
 Goats: 75-85 per minute 
 Sheep: 120 per minute 
(c) Insert thumb into one inflation on each unit and check that it is opening and closing. 
(d) Inspect short air tubes for holes, tears, splits, etc. and replace if any faults are found. 
3. Prepare a cow by washing her udder with an approved udder washing solution and dry udder thoroughly 
with individual paper towels. 
4. Attach milker unit to udder being careful not to admit excessive air while attaching teat cups. 
5. Pulsation rate will change during milking as the claw adjusts to the milk flow. This is normal. 
6. Shut vacuum off by means of the snap clamp and remove milker units as soon as cow is milked out. Do not 
leave units on for long periods of time as over milking can injure delicate teat tissue. 
 
7. Dip teats in an approved teat dip. 
EACH DAY AFTER USE, RUN PUMP A FEW MINUTES WITH THE CLEAR 
HOSE DISCONNECTED TO HELP DRY OUT ANY MOISTURE LEFT INSIDE. 
DO NOT STORE PUMP WITHOUT DOING THIS AS RUST MAY FORM 
AND VOID YOUR WARRANTY. 
Maintenance
NOTE 
The normal recommendation for replacement of NuPulse Inflations, Milk Hose and 
Repair Kits is based on number of milkings. However, for family farms with just a few 
animals, we recommend changing the Rubberware and Repair Kits annually to ensure 
optimal performance of your milker units. 
1. Change NuPulse inflations at approximately 3000 cow milkings or more often if cracked or split. 
2. Change short air tubes as needed when holes, splits, etc. are detected. 
3. Change milk hoses at approximately 3 years or more often if cracked 
or split. 
4. Install NuPulse pulsator repair kits at approximately 6000 cow 
milkings or more often if components are deteriorated. 
5. Transparent claw body - replace if broken, as necessary. 
6. All other rubber gaskets, hoses, etc. - replace when cracks or splits 
are detected. 
7. Vacuum pump - refer to vacuum pump operating and maintenance 
instructions. 
Construction
The outer end plate, body, rotor and mounting bracket are all cast iron. Consequently any moisture that accumulates in the pump will tend to corrode the interior - especially if it stands idle. 
 
The vanes are made of hard carbon and are precision ground. The vanes should last between 5,000 and 10,000 hours depending upon the degree of vacuum at which the pump is run. 
New Pump Start-Up
If the motor fails to start or hums, pull the plug and check the current rating shown on the motor nameplate. If the pump is extremely cold, bring to room temperature before starting. If anything appears to be wrong with the motor, contact your Dealer. DO NOT disassemble the pump and motor as that will void any warranty that remains. 
Maintenance
WARNING!! 
MOTORS ARE THERMALLY PROTECTED AND CAN AUTOMATICALLY RESTART WHEN THE 
PROTECTOR RESETS. ALWAYS DISCONNECT POWER SOURCE BEFORE SERVICING. 
WARNING!! 
MOTORS ARE THERMALLY PROTECTED AND CAN AUTOMATICALLY RESTART WHEN THE 
PROTECTOR RESETS. ALWAYS DISCONNECT POWER SOURCE BEFORE SERVICING. 
FILTERS 
DISASSEMBLY 
Dirty filters restrict air flow and, if not corrected, could lead to possible motor overload, poor performance and early pump failure. Check filters periodically and clean when necessary by removing felts and washing in Flushing Solvent. Dry with compressed air and replace. 
Please be sure to look over the Troubleshooting Guide on Page 12 for options before beginning any disassembly. If flushing does not eliminate the problem, remove the six bolts holding the end plate to the body. Now remove the end plate and the four vanes. Do not remove the rotor or loosen electric motor through bolts. The vanes could be worn or require further cleaning. The top clearance (between rotor and body) may be adjusted by LIGHTLY tapping on the pump body while turning the rotor to assure that all points on the rotor clear the body. 
 
TO PREVENT EXPLOSIVE HAZARD, DO NOT PUMP COMBUSTIBLE 
LIQUIDS OR VAPORS WITH THESE UNITS. 
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