Motors, Filters, and Maintenance for AstroVac Central Vacuum
All Products for AstroVac
Only hear a "click" when trying to start the system? Does it shut off and start back up in a few minutes? These are common signs of a dead motor which only leaves two options. Replace the motor or the replace unit. If you liked the amount of suction it originally had, then replace the motor. If you'd like stronger suction or if you'd like a cleaner disposal system consider a different unit or alternative brand.

How is a central vacuum maintained? Generally, the only thing required is emptying the main unit. Beyond that there are some upkeep and preventative options given below.
Replacement Chart for AstroVac Vacuum Motors, Filtration, & More
AstroVac Model # Replacement Motor
Filtration
AstroVac Unit
AstroVac MK1

120 volt
116472 Motor
Price / Details /
Instructions

115334
3-Pack Central Vacuum Paper Bags
Astro-Vac
MKI, MK 1, MK I
Bag #723 Buy
AstroVac Unit
AstroVac
MK-lll

120 volt
Two cans
115334 MotorPrice / Details /
Instructions
115334 (two motors)
Mark-III is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac Unit
AstroVac
MK-V

120 volt
Two cans
115334 MotorPrice / Details /
Instructions
115334
(replaces 116467)
Mark-V is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac MK-Vl
220-240 volt
Two cans
117465 MotorPrice / Details /
Instructions
117157
(replaces 116717)
Mark-VI is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac MK-Vlll
220-240 volt
Two cans
115334 MotorPrice / Details /
Instructions
115684
Mark-VIII is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac Unit
AstroVac MK-X

120 volt
117465 MotorPrice / Details /
Instructions
(1 of 2 motors listed in link)
Mark 10, Mark-X is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac MK-XV
120 volt
Not available from MD Vac Call for information
AstroVac MK-XVlll
120 volt
117478 MotorPrice / Details /
Instructions

117478
(replaces 115684)
Mark-XVII is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac MK-XXlll
220-240 volt
116213 MotorPrice / Details /
Instructions
116213
3-Pack Central Vacuum Paper Bags
Astro-Vac Mark-XXIII
Bag #723 Buy
AstroVac Unit
AstroVac
MK-XXVlll

120 volt
117507 MotorPrice / Details /
Instructions
117507
(replaces 116507)
3-Pack Central Vacuum Paper Bags
Astro-Vac Mark-XXVIII
Bag #723 Buy
AstroVac Unit
AstroVac MK-XXXll

Not available from MD Vac MK-XXXII is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac MK-XXIX
220-240 volt
116119 MotorPrice / Details /
Instructions
116136
3-Pack Central Vacuum Paper Bags
Astro-Vac Mark-XXIX
Bag #723 Buy
AstroVac
P-120, P-125

120 volt
115334 MotorPrice / Details /
Instructions
115334
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac P-225
120 volt (two piece)
117478 MotorPrice / Details /
Instructions
117549-12
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac SR-41, SR-43
120 volt
(color may vary)
116472 Motor
Price / Details /
Instructions
116472
 
AstroVac Unit
AstroVac SR-22

120 volt
(color may vary)
117465 MotorPrice / Details /
Instructions
117465
(replaces 116467)
SR-22 and SR23
Foam Filter
AstroVac Unit
AstroVac
SR-34
120 volt
(color may vary)
116429 MotorPrice / Details /
Instructions

116429
4-Pack MicroFilter Bag Small


Bag #723MFS Buy


AstroVac
SR-14, SR-38
120 volt
(color may vary)
116429 MotorPrice / Details /
Instructions

119997
4-Pack MicroFilter Bag Small


Bag #723MFS Buy

AstroVac Unit
AstroVac SR-40, SR-40V
120 volt
(color may vary)
116765 Motor
Price / Details /
Instructions
116765
SR40 is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac Unit
AstroVac SR-42
120 volt
(color may vary)
116472 Motor
Price / Details /
Instructions
116472
SR42 is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac Unit
AstroVac SR-50, SR-52
120 volt
(color may vary)
117465 MotorPrice / Details /
Instructions
117465
(replaces 117467 and 117549-12 (two possible))
4-Pack MicroFilter Bag Small


Bag #723MFS Buy

AstroVac Unit
AstroVac SR-60

120 volt
(color may vary)
117465 MotorPrice / Details /
Instructions
117465
(replaces 116467)
SR60 is Cyclonic with Foam

AstroVac SR-61

220-240 volt
(color may vary)
117465 MotorPrice / Details /
Instructions
117157
(replaces 116717)
SR61 is Cyclonic with Foam
AstroVac Unit
AstroVac SR-72

120 volt
(color may vary)
117465 MotorPrice / Details /
Instructions
117465
(replaces 117467)
SR72 is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)

AstroVac SR-73

220-240 volt
(color may vary)
116213 MotorPrice / Details /
Instructions
116213
SR73 is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac Unit
AstroVac SR-82

120 volt
(color may vary)
116472 MotorPrice / Details /
Instructions
(takes 2 motors)
116472
(replaces 117073)
 

AstroVac SR-83

220-240 volt
(color may vary)
117743 MotorPrice / Details /
Instructions
117743
SR83 is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac Unit
AstroVac SR-86

120 volt
(color may vary)
119412 MotorPrice / Details /
Instructions
119412
SR86 is Cyclonic with Foam
AstroVac Unit
AstroVac SR-88
120 volt
(color may vary)
116765 MotorPrice / Details /
Instructions
(takes 2 motors)
116765
SR88 is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)
AstroVac Unit
AstroVac SR-89
220-240 volt
(color may vary)
117123 MotorPrice / Details /
Instructions
(takes 2 motors)
117123
SR89 is Cyclonic
Clean top screen or mesh. Mesh Replacement (cut using old as template)

More SR vacuum models here.
(AstroVac was sold as Vacumaid for a time.)
Basic Maintenance for AstroVac Vacuum

Filtration Maintenance
Much like a regular portable vacuum, the basic maintenance of a AstroVac Central Vacuum System is changing the bag, or, in most cases, emptying the dirt receptacle on the main unit. To do this, remove the base of the unit with a twist or by unlatching, then dump the debris. Reach up and remove the mesh filter. To further clean the filter, wash and it thoroughly air dry before installing. Above the mesh filter is a screen that needs to be clear from all debris.

Motor and Vacuum Maintenance
There is nothing to lube or oil in or on the central vacuum system, including the AstroVac motor, AstroVac vacuum motor unit, or AstroVac vacuum cleaner. For the indoor vacuum brush, the fibers that get wrapped around the brush roll of the vacuum cleaner head should be cut out and removed on a regular basis.

Pipe and Hose Maintenance
We recommend cleaning out the hose and piping system at least once per year. The best way to do that is with Tornado Central Vacuum Maintenance Cloths. They do a couple of things. First, they push through the pipes, bringing along stalled out debris. Second, they deodorize the hose, pipes, and unit. Some amazing results can come from this product. The vacuum hose will last longer if it is stored on a hanger, always being detached from the vacuum after each use. See if any of these Storage Items can help your situation (scroll to the bottom of the Accessory Page).

Email Reminders to Empty Vacuum
Sign up for the Free Quarterly Email Reminders to dispose of your central vacuum debris. Let the trash build up can reduce suction, making the unit run hotter and clean less efficiently.

Replacement Motors and Parts for AstroVac Vacuums

Troubleshooting
Self diagnose your system using this Interactive Troubleshooting Guide and Solutions.

Motor Replacement
Contact a local dealer for service, or consider doing it yourself. Motors on the AstroVac vacuum have a few fasteners and wires that need to be unattached, the reattached on the new motor. It should take less than one hour. First, turn off the circuit breaker or unplug the central vacuum unit. Then, access the motor by releasing the outer housing. Use the chart to find the right replacement motor for your AstroVac motor model. A motor may have many numbers on it but typically the real motor number starts with 11. Here are detailed AstroVac Motor Replacement Instructions.

Circuit Board, Relay, Transformer, MiniBreaker
Separate transformers, relays, and minibreakers are not available here for AstroVac. However, when a circuit board is installed, the most common board replacement for AstroVac vacuums is the Vacuum Motor Circuit Board for Single Motor Units 110 Volt. The board is strong, yet generic and may need to be retrofitted. There are other Generic Circuit Boards here for units with different voltage and two motors. These robust generic boards are made by the leading industry supplier. An electrician will be able to replace the circuit board, or replace the relay, transformer, and minibreakers with a circuit board quite easily. Print and use the large photograph of the board as the wiring guide.

Motor Carbon Brush
The AstroVac motor has two carbon brushes that wear down and can be replaced before they damage the motor. However, the AstroVac motor may go bad for other reasons while the carbon brushes remain fine. AstroVac motor brushes can be checked every few years and replaced if the 3/4-inch-long solid carbon is worn down. Definitely replace if one or both are down to 3/16 inch. Type the motor replacement number (not model number) in the search box and the motor brushes will come up along with instructions.
 
Note: AstroVac Vacuum is a registered trademark of Lindasy Mfg. Inc., not M.D. Manufacturing, Inc. Products sold by M.D. Manufacturing, Inc. are not from AstroVac Vacuum but are designed to complement a AstroVac Central Vacuum. Therefore, parts and products carry warranties from MD Manufacturing and not AstroVac Vacuum and thus may alter the warranty provided by AstroVac Vacuum.
Need more help? Try our extensive and helpful AstroVac Vacuum Questions and Answers or give us a call at 1-800-997-2278 M-Th 7 a.m. to 5 p.m. Pacific Standard Time.