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Acceptable ranges are:

120VAC units . . . . . . . . . . . . . . . . . . . 110VAC to 125VAC
208/220VAC units . . . . . . . . . . . . . . . . 204VAC to 240VAC
230VAC units . . . . . . . . . . . . . . . . . . .  213VAC to 250VAC
240VAC units . . . . . . . . . . . . . . . . . . .  225VAC to 260VAC

c. 

AC fuse blown. CAUTION: Turn off MINUTEMAN power switch

and disconnect the power cord before removing the AC fuse from the
holder. Inspect fuse carefully, since it is sometimes difficult to identify a
bad slow blow fuse visually. Fuse replacement is the user’s
responsibility, Use a fuse with proper ratings.

PRODUCT

FUSE RATING

BUSS EQUIVALENT

PART NUMBER

MM250XL/1

3 Amp, 250VAC, Slow Blow

MSL3

MM250XL/2

1.5 Amp, 250VAC,Slow Blow

MSL1.5

MM500/1

6 Amp, 250VAC, Slow Blow

MSL6

MM500/2

3 Amp, 250VAC, Slow Blow

MSL3

2. PROBLEM: 

Unit drops load in inverter mode (battery operation)

Probable causes:

a.  Unit is overloaded. Read the section titled SPECIAL FEATURES- OPERATION,
pertaining to overload and see if unit function is as described.

b.  D.C. breaker is off. Check D.C. breaker

c.  Internal batteries disconnected. Obtain assistance from your supplier.

NOTE:

If either b or c is the problem, the MINUTEMAN unit will go off completely when it switches
to inverter mode (battery operation).

3. 

PROBLEM: Unit goes immediately to 2-minute warning during

                               inverter mode (battery) operation.

Probable cause: Batteries are bad or require charge.

Summary of Contents for MM250XL/ 1

Page 1: ...ruptible Power Supplies are manufactured by Para Systems Inc Each unit is fully automatic simple to use and designed to be maintenance free operation for years to come Each unit provides superior powe...

Page 2: ...n 2 6 Determining Load Requirements for Selection of the Proper MINUTEMAN Unit 2 7 Installation and Test 3 8 Operation 4 9 Special Features Operation 5 10 System Batteries 5 11 Battery System Checkout...

Page 3: ...mage is found save both the shipping container and the packing foam in case the unit may later need to be returned to the factory or shipped to another location WARRANTY REGISTRATION Locate your warra...

Page 4: ...n and off rapidly and repeatedly while the unit is running in the inverter mode battery operation Damage to the MINUTEMAN inverter and your system can occur Do not cover unit air holes or restrict air...

Page 5: ...D C breaker switch located on the back left bottom of the unit with a red green polarity light above the rear access panel cover MM250XL does not have the polarity light since it is not normally used...

Page 6: ...seconds the unit returns to the AC Normal mode green light comes back on alarm and amber light goes off Your MINUTEMAN unit is now properly installed and ready to protect your system OPERATION When a...

Page 7: ...it output becomes overloaded in the inverter mode battery operation circuitry is provided to protect the unit inverter and transformer as well as your system When an overload occurs the MINUTEMAN inve...

Page 8: ...2 minute warning mode the batteries should be replaced UPS MONITORING CONFIGURATIONS MM500 units in this manual provide a UPS monitoring capability option which will allow direct interface with many d...

Page 9: ...ailable for new installations which do not already have an add on monitoring board Software sold separately by Sutton Designs Ithaca NY Software sold separately by GNJ Corp Silver Springs MD MINUTEMAN...

Page 10: ...low Blow MSL3 MM250XL 2 1 5 Amp 250VAC Slow Blow MSL1 5 MM500 1 6 Amp 250VAC Slow Blow MSL6 MM500 2 3 Amp 250VAC Slow Blow MSL3 2 PROBLEM Unit drops load in inverter mode battery operation Probable ca...

Page 11: ...harges inside the carton or packing list folder Also include your current address for product return 5 Return the unit freight prepaid to Para Systems headquarters at the address shown on the front of...

Page 12: ...INDIRECT INCIDENTAL CONSEQUENTIAL OR OTHER TYPES OR DAMAGES RESULTING FROM THE USE OF THIS PRODUCT OTHER THAN THE LIABILITY STATED ABOVE THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTIES EXPRESSED OR I...

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