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OWNER’S GUIDE

USE AND CARE MANUAL 

MODEL MB24A

Congratulations: You have purchased a product of superior 

performance and design, which will give the best service 

when properly operated and maintained. This cooler is 

intended to be  used as a convenient  roll-around spot 

cooler. 

This guide was designed to provide you with the information 

needed to prepare the unit for roll-around spot-cooling. It 

also contains information on how to safely operate, inspect, 

maintain and troubleshoot your MasterBlaster evaporative 

air cooler.

The first section contains instructions to prepare your 

cooler for roll-around portable service. The second section, 

Maintenance, contains operational and maintenance 

instructions to aid in keeping your unit in good working 

order, while Troubleshooting includes information to help 

diagnose and repair commonly encountered problems.

Read all instructions carefully before installation

• This cooler must be connected to 120 volt AC, 60 Hz

(cycle) power only. NOTE: Improper voltage will void the
pump and/or motor warranties and may cause serious
personal injury or property damage.

• This cooler must be plugged into a GFCI protected

receptacle, which has been properly installed in
accordance with all local and national codes. If you are not

sure that the receptacle is GFCI protected, consult with a

qualified electrician.

• This cooler is equipped with a power cord having an

equipment grounding conductor and grounding plug. Do
not attempt to defeat this safety device by removing the
grounding pin.

• Do not step on or rollover power cord with heavy or sharp

objects. Do not operate if plug or cord is damaged in any
way. If the unit is damaged or malfunctions, do not
continue to operate it.

• Remove the plug from the electrical receptacle by pulling

on the plug and not the cord.

• Always disconnect electrical power to unit before

attempting to work on or service your cooler.

• Do not operate with evaporative pad removed.

• Do not operate this cooler (fan motor) with any solid-state

speed control device.

• Do not operate with inlet/outlet grilles removed. Do not

place fingers or any other objects inside the fan section.
Serious risk of personal injury or property damage.

• Never wash your cooler cabinet with a garden hose, water

may harm motor and pump.

NOTE:

• Do not use indoors on carpet or wood floor.  Unit may leak

water and could damage flooring or create a slip hazard.

• Do not locate or operate cooler near exhaust or vent pipes

as odors or fumes may be drawn into unit.

• Your warranty does not cover shipping damage. Report all

shipping damage at once to store making the delivery.

• For future reference, record the serial number and

purchase date of your evaporative cooler here:

Serial # ______________________________________________

Purchase Date: _______________________________________

Place of Purchase: ____________________________________

READ THIS FIRST!

WARNING - 

TO REDUCE THE RISK

OF FIRE, ELECTRIC SHOCK OR INJURY TO 
PERSONS, OBSERVE THE FOLLOWING

Safety 
Operation 
Maintenance

Trouble Shooting 
Parts Replacement

1-999-2439

CAUTION: the use of anode devices, chemical additives or 
cooler cleaner treatments in this cooler will void the warranty.

MASTER BLASTER

-

- INITIAL RELEASE

LRC X/X/2013

ECN REV.

DESCRIPTION

BY

DATE

REVISION HISTORY

.X = ±.125

.XX = ±.030

.XXX = ±.005

= ± 2°

ALL DIMENSIONS ARE OUTSIDE AND TO

THE CENTER OF ALL HOLES AND SLOTS.

UNLESS OTHERWISE SPECIFIED:

PROPRIETARY NOTICE:

THIS DOCUMENT AND THE INFORMATION CONTAINED HEREIN ARE PROPRIETARY DATA

OF PHOENIX MANUFACTURING INC. NEITHER THIS DOCUMENT OR THE INFORMATION

CONTAINED SHALL BE REPRODUCED, USED OR DISCLOSED TO ANY OTHER WITHOUT

WRITTEN CONSENT OF PHOENIX MANUFACTURING INC.

Phoenix Manufacturing Inc.

BLANK NUMBER:

SCALE:

MATERIAL:

DRAWN BY:

DATE:

DRAWING NUMBER:

REVISION:

PART DESCRIPTION:

MIN. BEND RADIUS = 

MASTERBLASTER 10K FINAL ASSEMBLY

DO NOT SCALE

S. KANDOV

11/8/2012

SHEET: 1 OF 1

# OF SHEETS:

ALL FLAT PATTERN FEATURES

ARE FORMED UP.

PAGE 1

READ AND SA

VE THESE IMPOR

TANT

SAFETY INSTRUCTIONS

1-999-2439

REV 

 

B  04/21

Summary of Contents for MASTER BLASTER MB24A

Page 1: ...ng to work on or service your cooler Do not operate with evaporative pad removed Do not operate this cooler fan motor with any solid state speed control device Do not operate with inlet outlet grilles...

Page 2: ...float kit bag from the box Parts box contains the following items 1 Float valve assembly 2 Garden hose adapter with washer and nut 3 Brass drain 4 Brass hose cap 5 16 x 1 4 20 nuts and 1 4 20 x 1 2 b...

Page 3: ...ns your cooler is complete and ready for use Please proceed to Pre startup inspection checklist on page 3 before starting unit for the first time Fan shaft pulley and motor sheave set bolts screws are...

Page 4: ...n freely Failure to do so may result in burning out motor Periodic inspection of your cooler will enhance the chance for long trouble free service life For maximum efficiency every two months during o...

Page 5: ...n freely Failure to do so may result in burning out motor Periodic inspection of your cooler will enhance the chance for long trouble free service life For maximum efficiency every two months during o...

Page 6: ...ns your cooler is complete and ready for use Please proceed to Pre startup inspection checklist on page 3 before starting unit for the first time Fan shaft pulley and motor sheave set bolts screws are...

Page 7: ...float kit bag from the box Parts box contains the following items 1 Float valve assembly 2 Garden hose adapter with washer and nut 3 Brass drain 4 Brass hose cap 5 16 x 1 4 20 nuts and 1 4 20 x 1 2 b...

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