Technical

Vacuum can be started up quiet easily from just a small touch from the lid to the micro-switch, to adjust the lid. Loosen up screws from the back of the lid on both the left and the right side. 20150812 103312

The display fuse on an MVS 45 is located on the side of the contactor labeled QM2.

display fuse

Many applications being used contain liquid when vacuum sealing inside the chamber. We always recommend that an angel tray kit for liquids is used. 

To assist in keeping these liquids from entering the bladder, we have added 2 "O" Rings to the bushing. 

These "O" Rings serve as a gasket to help protect the bladder. A photo of the new style bladder bushing can be found below. 

New Bladder Bushing

A clog in the oil cooler or oil tubing, prevents the proper circulation and can cause many problems.

To determine if there is a clog, check the temperature at the oil tubing coming from exhaust box, down the back end to the round oil cooler.
The temperature taken at the oil tubing should be about the same (+- 10 degrees) as the temperature measured at the side of the exhaust box.

If there is a big difference in the 2 temperatures, it may indicate there is a clog.

cycle

1. Lid switch or start button starts the vacuum cycle.

2. Control board sends signal to the vacuum pump to start pulling out all the air from the chamber.
a. The air release valve (normally closed setup) is opened to the vacuum pump and closed to the
atmospheric pressure.
- this is to ensure the final vacuum pressure is attainable
b. The seal valve (normally closed setup) is closed to the atmospheric pressure and open to the vacuum pump.
- this is to prevent the seal bladder from pushing the seal bar upward and pinching the bag

3. Vacuum sensor on control board receives final vacuum pressure and control board sends stop signal to
vacuum pump.

4. Control board sends out signal to seal valve and seal transformer for the set seal time.
a. Seal valve receives signal to open to the atmospheric pressure and pressure difference pushes bladder up and raises seal
bar against seal cushion.
b. At the same time seal transformer receives signal and energizes the seal wires to seal the bag.

5. Control board sends signal to air release valve to open to atmospheric pressure.
a. Pressure in the chamber and outside equalizes; spring in bladder retracts to bring seal bar down
Lid can be opened.

6. Control board sends signal to air release valve and seal valve to close for the next vacuum cycle.

Download:  MVS 45 Series - Lid Shocks Replacement (pdf) »


Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

Download:  MVS Solenoid Valve Testing (pdf) »

 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

1. If the machine is not equipped to receive gas and the gas function is programmed, the machine will not work. The gas flush function light will blink continuously until it is reset to zero.
2. Gas or gas mixture must be regulated between 15 to 60 psi before connecting to the gas inlet on the machine.
3. The higher the pressure, the higher the force or velocity of gas will come out of the nozzle. High pressure can move the bag from the nozzle or the sealing bar or cause the bag to be crooked on the seal bar.
4. If bag contains powdery substance, the gas injection may cause the powder to expand and over flow out of the bag and into the chamber.
5. Gas flush function can be set from program P1 through P8 on the MVS X series machine.
6. During programming mode, each light will light up to accept the programming.
a. Vacuuming – picture with arrow pointing out of the package( left most LED light on the keypad)
b. Extra vacuum – using the same picture with arrow pointing out of the package
c. Gassing – picture with arrow pointing into the package
d. Sealing – picture of 2 triangles on top of each other at opening edge of package
e. Air release – picture of arrows pointing toward outside the package (right most LED light on the keypad)
7. The vacuum % must always be higher the gas %.The residual vacuum % between vacuum % and gas % should be higher than 60%. This is to ensure proper sealing of the package.
8. Example 1.
a. Vacuum 99.9%
b. Gas 40%
c. Residual vacuum = 99.9 – 40 = 59.9%
9. Example 2.
a. Vacuum 75%
b. Gas 15%
c. Residual vacuum = 75 -15 = 60%
10. Over-gassing will only waste the gas inside the chamber. Choose the lowest gas % possible to give the best pillow effect of the package.
11. Nozzle should be inside the bag and the bag holder under the lid should be over the nozzle. This will ensure the bag is pinched between the holder and the nozzle when the lid is closed.
12. The bag should also lay flat with no wrinkle and no fold-over on the seal bar for a good seal.

Download:  Gas Kit - Important Notes (pdf) »

 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

Download:  3 Phase Machine Installation (pdf) »


Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

If the air is not returning to the chamber at the end of the cycle, please check the following if you are a certified technician or electrician:

1. On the keypad, does the fourth LED light come on when air is supposed to be returning to the chamber?

If no, it is more than likely your control board.

If yes, the possibilities include:

Check the connection from, control board to wire harness.

Check the 2 wires that go to the air release solenoid as they should measure 120V.

If they are not measuring at 120V, control board is more than likely the issue.

If they do measure at 120V, check voltage at the solenoid connector, make sure it measures 120V.

If the voltage at the solenoid connector does not measure 120V, possible bad connector or loose wire.

If the voltage at the solenoid connector measures 120V, check the devac valve solenoid by hot wiring directly with 120V power.

If it engages the valve, the valve is good. 

If it does not engage the valve, the valve and solenoid need to be replaced.

 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

 

On all MVS floor model series (50, 52-208v and 65) lines are numbered L1, L2 and L3.

For all 3 phase MVS floor model series, connect high/wild leg to LINE 3. 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

1. Check oil and filter. Not regularly changing your oil can negatively affect the way in which your pump runs. 

2. Check that safety switches have not been triggered. If you can push in any of the buttons underneath the front right corner of the machine back up, this means one of them has been triggered due to a power issue. 

3. Make sure there is a set value in the vacuum percentage in the program you are using. 

4. If there are lights blinking on your display, more than likely you have programmed gas. Make sure if you are not using inert gas and that the values displayed are 0.

5.Manually press on the micro lid switch on the back of the chamber to see if that is the issue. 

6. Try to recalibrate the machine. 

For technicians-

Check microswitch, contactor, all connector wires, control board, and fuses(both on the control board and at fuse box).

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

Download:  MVS Bladder Continuity Test (pdf) »

 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

First and most importantly. the gas pressure must be regulated before connecting to the machine.

Operating pressure is between 15 to 25 psi.

Maximum pressure is 58 psi.

The gas pressure must be constant at the machine.

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

 

tub removal 1

1. Turn power off and unplug machine.
2. Remove body rear panel and disconnect microswitch
wire at the connectors.
3. Carefully remove left and right shock-to-lid screws
(Lid will rest in the groove)
4. Remove left and right lid hinge screws.
(Top hinge block set screws might have to be loosened to ease hinge
pins removal.)
5. Stand behind machine, while carefully holding and
balancing the lid, remove left and right hinge pins.
6. Carefully lift the lid away from the hinge blocks.
7. Remove left and right body-to-tub screws.

tub removal 2

8. Pull out the sealbars.
9. Pull out the white bushings.
10. Carefully loosen and remove lock nuts.
11. Bladders will drop down.

(Make sure to save the o-rings.)

tub removal 3

12. Carefully lift tub out of body and place
support between tub and body.
13. Loosen hose clamp and slide hose off
elbow.
14. Remove the hinge blocks from tub.
(Please note the orientation of blocks before removal.)
15. Remove the lid shocks.
(Please note orientation of shocks before removal.)
16. Remove microswitch bracket.
(Please note orientation and height of
microswitch before removal)

 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

microswitch

1- Turn off machine and unplug from outlet.
2- Remove left and right tub-to-body retaining screws (left and right side edges of the tub).
3- Lift the tub out of the body and rest the tub on blocks of wood.
BE CAREFUL because tub is heavy and top edges of body is sharp.
4- The micro-switch is at the rear left side of the tub.
5- The microswitch is mounted on a bracket which is held by 2 screws to the body of the tub.
6- Before removing the old microswitch, please observe the height of the switch in reference to the opening
on the mounting hold. This is to determine the engagement distance between the bottom of the lid and
top of the micro-switch.
7- Disconnect the 2 lead connectors and remove the old micro-switch.
8- Install the new micro-switch. Check the engagement distance of the micro-switch. It should engage when
front of the lid is about 2 to 3 inches before closing completely. Adjust the height as necessary.
9- Reconnect the micro-switch connectors, plug machine into power outlet and turn on machine. Close
the lid and make sure the cycle starts when the switch is engaged at 2 to 3 inches before lid closes to the
tub. Readjust microswitch height as necessary.
10- Carefully place tub back into the body and reinstall the tub-to-body retaining screws.

 

 Our advice is stricly limited to the question(s) asked and is based on the information provided to us. Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

Important Notes:

  1. Gasket is shipped at a slightly longer length than needed. A final trimming must be done to ensure proper lid seal.
    See download below for installation procedures.

    Approximate shipping lengths:
    MVS 31X / 31XP = 45 inches
    MVS 41X / 41XP = 73 inches
    MVS 45X / 45XP = 69 inches
    MVS 45XII / 45XPII = 69 inches
    MVS 45LXII / 45LXPII = 69 inches
    MVS 48 / 48DV = 86 inches
    MVS 50X / 50XP = 94 inches
    MVS 65X / 65XP = 108 inches

  2. DO NOT pull or stretch the gasket to ease the installation of the gasket into the groove.
    Gasket will stretch during insertion due to narrowness of the groove in the lid.
    The narrow groove will ensure gasket stays in place.

  3. DO NOT use any kind of powder, lubricant or glue to install the gasket.

Download:  MVS Lid Gasket Installation (pdf) »

 

Our advice is stricly limited to the question(s) asked and is based on the information provided to us. Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.


In cold environments, the oil becomes heavy, causing the amp pull to become higher. 

We suggest to increase the breaker to an 18 AMP breaker.

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.

Moisture working its way into the bladders is what can create the majority of issues that lead to bladder replacement.

Minipack highly recommends to use an angled tray for liquids to prevent these issues from occurring and decrease oil contamination. Order an angled tray for liquids today to prevent bladder issues.

Other possible issues:
The sealing bar on the machine has one of the following symptoms:

  • Loss of continuity
  • Loss of bag vacuum
  • Inconsistent sloppy seal
  • Raises unevenly
  • Lacks contact with red lid cushion

Important: The following instructions to be performed by Certified Technicians only!

Estimated bladder removal and bladder rebuild time: 1.5 hrs per sealing bar
(We recommend rebuilding all bladders per sealing bar at the same time)

bladder-aaa

Tools needed:

  • Phillips screwdriver
  • Pliers
  • 2.5mm allen wrench
  • 7mm socket
  • Heat gun
  • Loctite
  • Acetone
  • Clean cloth

 

Step 1: Remove bladder

  1. Disconnect vacuum hose and electrical transformer from bottom of the bladder and remove the locking nut inside the chamber that holds the bladder in place.

bladder-1


Step 2: Disassemble bladder

  1. Use pliers or vice grip to tightly grip steel post against the white bushing to keep spring inside from releasing too fast.
    Caution: Spring is in tension!

  2. With a Phillips screwdriver carefully remove all (8) screws that hold the upper and lower body of the bladder together.

  3. Slowly separate the two bodies from each other, and remove spring between them.

  4. Remove old bladder gasket. Use a clean cloth and Acetone to clean all parts of the bladder.

bladder-2


STEP 3: Reassemble bladder

  1. Replace gasket

    Align the holes of new gasket with notches on lower bladder body.

    bladder-3a


  2. Replacing the inner wire

    1. Loosen thread locker by using heat gun to heat bottom section of metal post on center disk.

    2. Grip the metal post on the bottom side of center disk with pliers. Use 2.5mm allen wrench to loosen and remove screw on back side of disk. Remove old inner wire and replace with new inner wire.

    3. Install metal post on disk by applying some Loctite on half of the screw (section closest to screw head). Tighten screw as much as possible.

    4. Use the 7mm socket to loosen and remove screw on upper bladder body. This will also remove the locking nuts and washer on top of upper bladder body. Replace wire and re-apply locking nuts.

    Apply washers/nuts in this order from bladders piece up: locking washer, locking nut, wire, locking washer, locking nut as in photo 3b-4 below.

    bladder-3b



  3. Assemble bladder body

    1. Set 4 screws into lower bladder piece in "x" formation ready to be inserted into upper bladder body (photo).

    2. Set coil on metal post. Insert metal post into upper bladder body, and white bushing on top over metal post.

    3. Push center disk upwards and tightly clamp metal post against white bushing with pliers to keep spring tight.

    4. Connect upper and lower bladder bodies together by carefully aligning marker strips located on their sides, and quickly screwing in the 4 screws. Insert other 4 screws and tighten.

    Apply 10 lbs of pressure on locking nuts when installing bladder back into chamber of machine.

    bladder-3c

 

Bladder Shaft (removal & installation)

1. Remove bladder assembly from chamber

2. Carefully split the top portion of the from the bottom part. *note: refer to document "how do I rebuild the bladders?" 

3. Hold the bladder shaft with a locking plier

4. Heat the shaft witha heat gun (not a torch) on high for 30 seconds.

5. Carefully loosen the screw with a 2.5mm/hex wrench

6. Install new shaft & inner wire onto disk. Note: use a drop of lock-tight glue on tip of screw before inserting into shaft.

IMG 2245

 

Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.