17
P/N 1010751 Rev. G 01/08
McDonald’s
Multi-purpose steaMer Mps-250
trouBleshootiNG (continued)
to restore factory default settings:
1. Turn the power off.
2. Press and hold PROGRAM and SINGLE SHOT
buttons.
3. Turn power on while still holding the PROGRAM
and SINGLE SHOT buttons.
4. Release the PROGRAM and SINGLE SHOT
buttons as soon as the unit stops beeping.
to clean inlet hose assy. #0010503:
1. Close ball valve (#12 on page 20).
2. Press SINGLE SHOT button once to release
pressure.
3 Take small pan or bucket and place it under the
filter/strainer cup (#14 on page 20).
4. Unscrew clear plastic cup (#14), remove strainer
screen and rinse both under faucet.
5. Re-install the strainer screen in the O-ring of the
clear plastic cup.
6. Screw the clear plastic cup back on the body of
the stainer, open the ball valve and press the
SINGLE SHOT button 3-4 times to bring water
back into the hose.
Problem
Possible Cause
Corrective action
Unit floods
overnight and/
or continues
to steam even
when in Ready
mode.
Solenoid value is being held open by debris
from the building’s water line piping.
Attempt to flush the debris out of the valve by
rapidly operating the unit on a number of “Single
Shot” cycles and then letting it rest. Or, follow
the Flushing/Cleaning Water Solenoid instructions
within the Maintenance section of this manual. If
the unit still leaks, contact your maintenance
person or Authorized Service Agency.
There is no pre-strainer/filter on the water
line just before the unit.
The water supply line filters were changed
just shortly before this started.
CheCKiNG aNd CleaNiNG the Water straiNer
To ensure proper and consistent steaming results, check the Water Pressure Regulator gauge and strainer cup
regularly. If the water pressure on the gauge has dropped, check the clear plastic strainer cup and clean out the
accumulated debris as follows:
1. Shut off the water supply valve to the unit. Unscrew the clear plastic strainer cup and carefully remove the
mesh strainer screen.
2. At the sink, gently flush all of the accumulated debris from the strainer cup and mesh strainer screen. Be
especially careful not to damage the mesh strainer screen.
3. Carefully place the mesh strainer screen into its seat at the bottom of the clear plastic cup and confirm that the
orange O-ring is properly seated in its place before screwing the strainer cup and top back together.
4. Purge the air out of the strainer tubing by disconnecting the male quick disconnect fitting from the equipment
and, over a bucket, pushing its valve core in until there is a good water flow.
78"
Approx
Water Flow
on/off
Cup and
strainer
Male Quick
disconnect
