800.772.3456 - OttoFrei.Com
Micro Pressure Washer
Part No. 123.087
This tough, dependable and durable cleaning pressure washer is designed to handle the strongest of solvents. Metal
handle reduces risk of breaking if dropped. Factory authorized replacement parts and repair service readily available. 110
Volt/60 Cycle A.C.
CAUTION:
The pressure washer builds up considerable pressure. Never point the pressure washer at yourself or other persons, as this
may cause injury. Remove the container, fill with fluid (about 2/3 full) and replace. Plug pressure washer into a 110V 60Hz outlet. De-
press switch for 15-20 seconds to prime pump. Spray fluid to remove oil film from internal pump parts. Spray pressure washer is now
ready for use.
OPERATING INSTRUCTIONS
1. The adjusting roller on top of the washer controls the degree of atomization of fluid. Approximate setting for maximum pressure is at
a point where 1/8” clearance is visible between rear of air intake and forward extremity of housing (#1). The set screw (#24) on the left
hand side of the barrel must be removed before attempting to move the adjusting roller.
2. Volume control knob at rear of water pressure controls the volume of fluid dispensed. For cleaning, turn button as far left as possible;
then, back to right 1/2 to 1 revolution.
TROUBLESHOOTING MINOR MECHANICAL PROBLEMS
Some of the micro pressure washers returned for repairs are found to be out of adjustment at the adjustable roller or volume control; or,
have simply had minor mechanical difficulties which could have been easily taken care of by electricians. Some troubleshooting prob-
lems and causes are listed below:
1. FLUID LEAKAGE
It is necessary that all parts, particularly the nozzle head, be tight to prevent fluid working its way through the screws threads. Cleaning
should also be done at an angle no greater than 45° to prevent leakage from the air hole at the top of the pressure washer. Leakage will
also occur at the screw threads of the container cup if is lifted forward for an extended period.
2. LACK OF PRESSURE
The primary cause of lack of pressure occurs when the suction tube, set screw, and nozzle head are not tight and the unit is sucking air.
Blockage in the pump unit or nozzle and weak/damaged springs in the pump assembly are also a cause of low pressure. A lack of pres-
sure will also occur when the prime is lost due to excessive tilting of the pressure washer.
3. OPERATION WITHOUT FLUID
It is highly recommended that this unit not be operated empty since undue wear and strain is caused on all working parts. Continued
use of an empty washer pressure will surely cause breakage of parts and needless repairs.
4. LUBRICATION
The washer pressure should not be over-lubricated. One or two drops of light machine oil used daily is sufficient to keep the pump unit
in working condition. For storage or discontinued use, it is recommended that a light machine oil be pumped through the washer pres-
sure in the same manner as cleaning fluids for a period of 2 to 3 seconds. For start-up cleaning fluid should be run through the unit
prior to putting it into operation so that any oily films might be pumped through the unit and flushed out.
