Simplicity 9518 Series Instruction manual

Micro-Pro II
MP-200 / 300 Series
Instruction Manual
0901052 Rev: H (05/13)
Page 1 of 16
TABLE OF CONTENTS
Introduction ........................................................................................................... 3
Circuit Board Diagram .......................................................................................... 3
Installation ............................................................................................................ 4
Plumbing .............................................................................................................. 4
Probe Installation .................................................................................................. 5
Electrical ............................................................................................................... 5
Rinse Operation.................................................................................................... 6
Sanitizer Operation ............................................................................................... 7
Probe Operation ................................................................................................... 8
Probeless Operation ............................................................................................. 9
Wiring Diagram (Single Transformer) ................................................................. 10
Wiring Diagram (Two Transformer) .................................................................... 11
Assembly Diagram (Single Transformer) ............................................................ 12
Assembly Diagram (Two Transformer) ............................................................... 13
CSA Certificate of Compliance ........................................................................... 14
Warranty Information .......................................................................................... 16
Knight Locations ................................................................................................. 16
CAUTION: All electrical connections to the Micro-Pro II system should first be verified with a meter.
Application of incorrect voltage will permanently damage the unit and is not covered under warranty. Avoid
wiring to any power source that has large fluctuations in voltage and/or is prone to surges. Refer to the wiring
diagram in this manual for all power and signal connections.
CAUTION: Do not mount the unit in the direct path of steam. This can short circuit and permanently damage
the unit. Mounting the unit on the side, on the back, or on the vents of the dishwasher may cause thermal
overload and damage or hinder the performance of the unit.
CAUTION: The Micro-Pro II has high voltage connected to the transformer(s). Always disconnect power
when servicing the unit.
Page 2 of 16
0901052 Rev: H (05/13)
INTRODUCTION
Micro-Pro II warewash systems provide the versatility of probe or probeless detergent control through advanced
microprocessor design. With the capability of controlling up to three products, the choice of liquid or dry detergent,
and the choice of single or dual transformer configuration, virtually any warewash application can be accommodated.
The Micro-Pro II warewash control features simplicity and versatility.
RINSE SPEED
SANITIZER SPEED
CONCENTRATION OR RECHARGE
ALARM DELAY OR INITIAL CHARGE
Single transformer
Dual transformer
POTENTIOMETER SETTINGS
SLIDE SWITCH SETTINGS
 Rinse Speed Pot: Adjust the speed at which the rinse
 Probe/Probeless Switch: Allows you to select
pump runs.
 Sanitizer Speed Pot: Adjust the speed at which the
sanitizer pump runs.
 Concentration or Recharge Pot: In ―probe mode‖ sets
detergent concentration strength. In ―probeless mode‖
sets the pump time necessary to recharge the
detergent concentration.
 Alarm Delay or Initial Charge Pot: In ―probe mode‖
sets the time before the alarm sounds if the probe
senses low detergent concentration. In ―probeless
mode‖ sets the pump time necessary to initially
charge the detergent concentration.
 Jumper Settings:
Single Transformer: Sets the unit for single
transformer see page 10 for wiring.
Dual Transformer: Sets the unit for dual
transformer see page 11 for wiring.
0901052 Rev: H (05/13)
operation with or without a probe
 Door/Conveyor Switch: Sets alarm delay range for
probe mode. Sets initial charge timing range for
probeless mode.
 Low/High Range Switch: Used if operating in probe
mode. Selects concentration ranges.
 Low/High Audio Switch: Sets the alarm volume.
 Sanitizer Select Switch: Sets the sanitizer pump to
run with rinse feed, or detergent feed.
 On/Off Rinse Limit Switch: When on, stops the rinse
pump after 30 seconds.
 3-Second Rinse Delay Switch: When on, delays the
rinse pump for three seconds.
 6-Second Rinse Delay Switch: When on, delays the
rinse pump for six seconds.
NOTE: If the 3-second and 6-second rinse delay
switches are both on, the rinse pump will be delayed
for nine seconds.
Page 3 of 16
INSTALLATION
PRESSURE SWITCH PLUMBING (optional)
Mount the unit on a nearby wall (using suitable
hardware) or on top of the dishwasher if desired. Try to
keep the unit within three feet from the final rinse line to
avoid long tubing runs.
Install pressure switch kit. Thread the male end of the
―tee‖ fitting into the rinse line on the dishwasher, and
connect the poly tubing from the rinse pump into the end
opposite the male threads, using the checkvalve
provided. Thread the pressure switch into the remaining
opening on the tee, perpendicular to the male threaded
end.
CAUTION: Do not mount the unit in the direct path of
steam. This can short circuit and permanently damage
the unit. Mounting the unit on the side, on the back, or
on the vents of the dishwasher may cause thermal
overload and damage or hinder the performance of the
unit.
Check all applicable plumbing and electrical codes
before proceeding with the installation. This will help to
ensure that the system is installed in safe and suitable
manner. A wiring schematic of the dishwasher should
be used as reference for making electrical connections
— this is typically provided by the dishwasher
manufacturer if one cannot be located on the machine
itself.
PLUMBING
RINSE & SANITIZER PLUMBING
The following installation steps apply for rinse and
sanitizer pumps alike.
(1) Install the provided 1/4" tube x 1/8" NPT injection
fitting into the side or bottom of the dishwasher
rinse line between the rinse solenoid valves and the
rinse jets. If necessary, drill a 11/32" hole and tap to
1/8" NPT. Use of a saddle clamp may be desired on
copper rinse line for better support.
(2) Cut a suitable length of 1/4" OD poly tubing and
connect between the discharge (right) side of the
pump’s squeeze tube and the injection fitting.
(3) Cut a suitable length of 1/4" OD poly tubing and
connect between the suction (left) side of the
pump’s squeeze tube and the pickup tube provided.
Be sure to draw tubing through the end of the
pickup tube.
(4) Hand-tighten the compression nuts on both the
injection fitting and pickup tube. Plastic ties can be
used to cinch around the connections where the
poly tubing is inserted into the pump’s squeeze
tube.
Page 4 of 16
LIQUID DETERGENT PLUMBING
(1) Install the provided bulkhead fitting through a wall
of the wash tank (above water level). If an existing
mounting hole cannot be located, use of a 7/8" hole
saw or punch may be desired.
(2) Cut a suitable length of 1/4" OD poly tubing and
connect between the discharge (right) side of the
detergent pump’s squeeze tube and the bulkhead
fitting.
(3) Cut a suitable length of 1/4" OD poly tubing and
connect between the suction (left) side of the
detergent pump’s squeeze tube and the pickup
tube provided. Be sure to draw tubing through the
end of the pickup tube.
(4) Hand-tighten the compression nuts on both the
bulkhead fitting and pickup tube. Plastic ties can be
used to cinch around the connections where the
poly tubing is inserted into the pump’s squeeze
tube.
DRY DETERGENT PLUMBING
(1) A powder or solid type feeder (not provided) should
be used for dispensing dry detergent products.
Follow the instructions included with the detergent
feeder for installation, and recommended water
temperature/pressure.
(2) Cut a suitable length of 1/4" OD copper tubing (not
provided) and connect between the input side of the
water solenoid and the water source. Maximum
recommended water temperature is 140°F (60°C).
(3) Cut a suitable length of 1/4" OD copper tubing (not
provided) and connect between the output of water
solenoid to a powder or solid detergent feeder.
(4) Carefully tighten the compression nuts on the water
solenoid — over tightening may cause solenoid to
leak. Tighten connections to the water source and
detergent feeder as needed.
0901052 Rev: H (05/13)
PROBE INSTALLATION (if required)
DETERGENT POWER SIGNAL
(1) Install the probe in the wash tank below the water
level. It should be away from incoming water
supplies, near the recirculating pump intake, and 3
to 4 inches from corners, heating elements, or the
bottom of the tank. If an existing mounting hole
cannot be located, use of a 7/8" hole saw or punch
may be desired.
A detergent power signal is required to activate the
detergent probe sensing or probeless initial charge.
(2) Connect leads from the terminals on the probe to
the ―probe‖ terminals on the circuit board.
(1) Remove all power from the dishwasher.
(3) For best results, use 18 AWG multi-stranded
copper wire for the probe connection. Avoid running
the wire near high voltage AC lines.
ELECTRICAL
Turn off all power before wiring the control. Check
with a voltmeter to ensure power is off.
MAIN POWER CONNECTION
(single transformer configuration only)
Some versions of the Micro-Pro II are provided with only
one step-down transformer. Connect the high voltage
side to any 115/208/230 VAC power source that is ―on‖
when the dishmachine is ―on‖ (i.e. mains switch on
dishmachine).
NOTE: The transformer provides power to both the
detergent and rinse circuits. The Micro-Pro II will only
operate detergent or rinse when electrically signaled.
To wire main power connection:
(1) Check the voltage of the main power source and
make sure that it matches one of the three available
input voltages (115/208/230 VAC) of the
transformer inside the Micro-Pro II.
(2) Remove all power from the dishwasher.
(3) Connect leads from the main power source to the
appropriate wires on the transformer.
* CAUTION: The Micro-Pro II unit has high voltage
connected to the transformer. Always disconnect main
power when servicing the unit.
Check the dishwasher for a power source that is active
during the washcycle only (example: the magnetic
contactor that controls the washpump motor) and verify
voltage.
(2) Connect leads from the detergent signal source to
the appropriate terminals of the detergent
transformer (if so equipped) or to the detergent
signal terminals on the circuit board (for single
transformer versions). The Micro-Pro II circuit board
will accept a detergent power signal of 14 - 240
VAC.
RINSE POWER SIGNAL
In addition to running the rinse pump, the rinse power
signal also triggers the detergent ―recharge‖ injection if
probeless mode is selected
(1) Check the dishwasher for a power source that is
active during the rinse cycle only (example: rinse
solenoid or rinse cycle light) and verify voltage. If a
direct signal can’t be located on the dishwasher, a
pressure switch can be used to provide a signal
(see next section below).
(2) Remove all power from the dishwasher.
(3) Connect leads from the rinse signal source to the
appropriate terminals of the rinse transformer (if so
equipped) or to the rinse signal terminals on the
circuit board. The Micro-Pro II circuit board will
accept a signal of 14 - 240 VAC.
PRESSURE SWITCH RINSE ACTIVATION
An optional remote pressure switch kit is available for
dishwashers that do not have a rinse power signal. The
pressure switch provides a rinse power signal when the
switch is activated by pressure in the dishwasher’s rinse
line.
(1) Remove all power from the dishwasher and the
dispenser.
(2) For Two Transformer units, wire main power to
the Rinse Transformer.
(3) See Page 10 for Single Transformer wiring and
page 11 for Two Transformer wiring.
0901052 Rev: H (05/13)
Page 5 of 16
RINSE OPERATION
The rinse pump will operate whenever the rinse
transformer is energized (if so equipped) or when a
rinse power signal is applied to the circuit board,
whether directly from the dishwasher, or by using a
pressure switch (single transformer version). A rinse
delay feature and rinse limit feature maximize the rinse
pump operating capabilities.
A prime button, located on the front cover, will allow the
rinse pump to run at full speed, regardless of the rinse
potentiometer setting. Power must be applied to the
system to prime the pump.
RINSE SPEED SETTING
(1) Turn the rinse potentiometer clockwise to increase
speed of the rinse pump
(2) Adjust as needed to achieve the best sheeting
action.
CLOCKWISE
TO INCREASE
RINSE
SPEED
RINSE DELAY SETTING
This feature delays the operation of the rinse pump for a
programmed time once the rinse power signal is
received. This function is typically used to conserve
rinse agent injection on door-type dishwashers (using
with conveyor machines is not recommended). The
rinse delay settings are 3, 6, or 9 seconds.
(1) Slide the upper rinse delay switch to the right to
delay the rinse for 3 seconds.
(2) Slide the lower rinse delay switch to the right to
delay the rinse for 6 seconds.
(3) Slide both rinse delay switches to the right to delay
the rinse for 9 seconds.
SLIDE RIGHT TO ACTIVATE
RINSE LIMIT SETTING
This feature will stop the rinse pump after 30 seconds of
continuous rinse power signal, conserving rinse agent
on dishmachines that fill through the rinse valve.
Slide switch to ―rinse limit‖ to activate.
SLIDE LEFT TO ACTIVATE
Page 6 of 16
0901052 Rev: H (05/13)
SANITIZER OPERATION
A selector switch sets the sanitizer pump to operate with
detergent feed, or with rinse feed. The sanitizer pump
will run simultaneously with detergent or rinse, whether
using probe or probeless mode, rinse delay or rinse
limit.
A prime button, located on the front cover, will allow the
sanitizer pump to run at full speed, regardless of the
sanitizer potentiometer setting. Main power must be
applied to the system to prime the pump, a signal is not
necessary.
SELECTING SANITIZER OPERATION
 Sanitizer with detergent: When the control is set to
this mode, the sanitizer pump will run simultaneously
with the detergent pump (or solenoid).
 Sanitizer with rinse: Injecting sanitizer into the rinse
line is required for low temperature dishwasher
applications. When the control is set to this mode, the
sanitizer pump will run simultaneously with the rinse
pump.
Choose if you want the sanitizer pump to run with the
detergent, or rinse. Slide the switch left or right to select
your choice.
SLIDE LEFT OR
RIGHT TO ACTIVATE
SANITIZER SPEED SETTING
(1) Turn the sani potentiometer clockwise to increase
speed of the sanitizer pump
CLOCKWISE
TO INCREASE
(2) Adjust as needed to achieve the required sanitizer
amount.
SANITIZER
SPEED
0901052 Rev: H (05/13)
Page 7 of 16
PROBE OPERATION
 With the detergent power ―on‖, the conductivity probe
senses detergent concentration. When concentration
drops below the setpoint, the control automatically
turns on detergent feed.
 Low and high concentration ranges allow easy setting
on all types of water conditions.
 When the detergent concentration is within 15% of the
setpoint, the control automatically pulse feeds (3
seconds on / 2 seconds off) to prevent over-use of
chemical.
SLIDE LEFT TO ACTIVATE
 An ―out of product‖ alarm will automatically sound if
the detergent setpoint is not reached in a specific time
period.
CONCENTRATION SETPOINT ADJUSTMENT
(1) With low range selected, slowly adjust the
detergent concentration pot clockwise a few
degrees. Detergent will pulse feed, then stop.
(2) Using a chemical titration kit, test detergent
concentration of the wash water. Continue to
increase the pot until the desired setpoint.
(3) If at full clockwise position of concentration pot and
wash water concentration is not strong enough, turn
pot back full counter-clockwise. Switch to high
range.
SLIDE LEFT TO ACTIVATE
CLOCKWISE
TO INCREASE
DETERGENT
CONCENTRATION
(4) Slowly adjust pot clockwise until detergent feed
begins, then stops. Using chemical titration kit,
continue adjusting pot until desired concentration
setpoint is reached.
ALARM DELAY SETTING
If the detergent setpoint is not achieved within the time
set on the alarm delay pot, the alarm will sound and the
unit will continue to feed. If the detergent setpoint is still
not reached within a second time frame (double the first)
the alarm will stay on, and detergent feed will stop.
(1) Delay time settings are:
Door
1 to 64 seconds
Conveyor
1 to 128 seconds
SLIDE RIGHT TO ACTIVATE
CLOCKWISE
TO INCREASE
(2) For conveyor type dishwashers, adjust the alarm
delay to be slightly longer than the time it takes for
the unit to achieve the setpoint with a fresh tank of
water.
ALARM
(3) For door type dishwashers, the alarm setting should
be calibrated to 5 - 10 seconds less than the
washcycle timing.
(4) Select low or high volume for the alarm.
SLIDE LEFT OR
RIGHT TO ACTIVATE
Page 8 of 16
0901052 Rev: H (05/13)
PROBELESS OPERATION
 Controls detergent concentration without a probe,
based on timed detergent feed.
 Initial charge time feeds detergent to the
concentration setpoint when dishmachines are initially
filled.
 Recharge time feeds detergent to maintain detergent
setpoint as rinse water dilutes the dishmachine.
 Door or conveyor switch selection optimizes
SLIDE RIGHT TO ACTIVATE
probeless operation for different types of
dishwashers.
INITIAL CHARGE DETERGENT SETTINGS
(1) Select door or conveyor setting.
(2) For dishmachines that fill through the rinse valve, a
detergent signal is not necessary for initial charge if
the control is set to door. The control senses by the
rinse signal when the rinse has been on over 30
seconds and runs the detergent for the initial
charge amount.
(3) For all other types of machines, the initial charge
amount will be dispensed each time a detergent
signal is applied.
(4) Adjust the charge potentiometer clockwise for the
amount needed to initially charge the washtank with
detergent. The ranges are:
Door
1 to 64 seconds
Conveyor
1 to 128 seconds
SLIDE LEFT OR
RIGHT TO ACTIVATE
CLOCKWISE
TO INCREASE
CHARGE
RECHARGE DETERGENT SETTINGS
(1) Adjust the recharge potentiometer to the amount of
detergent needed for one rack.
The range is 0 – 10 seconds.
(2) With door selected, the recharge detergent amount
will be dispensed one time when a rinse signal is
received.
CLOCKWISE
TO INCREASE
RECHARGE
(3) With conveyor selected, the recharge detergent
amount will be dispensed after a 12 second
continuous rinse signal. It will continue to dispense
every 12 seconds if the rinse signal remains on (i.e.
two racks in a conveyor train, two detergent
recharges).
0901052 Rev: H (05/13)
Page 9 of 16
WIRING DIAGRAM (SINGLE TRANSFORMER)
Page 10 of 16
0901052 Rev: H (05/13)
WIRING DIAGRAM (TWO TRANSFORMER)
0901052 Rev: H (05/13)
Page 11 of 16
ASSEMBLY DIAGRAM (SINGLE TRANSFORMER)
Page 12 of 16
0901052 Rev: H (05/13)
ASSEMBLY DIAGRAM (TWO TRANSFORMER)
0901052 Rev: H (05/13)
Page 13 of 16
Page 14 of 16
0901052 Rev: H (05/13)
0901052 Rev: H (05/13)
Page 15 of 16
DISCLAIMER
Knight LLC does not accept responsibility for the mishandling, misuse, or non-performance of the described items
when used for purposes other than those specified in the instructions. For hazardous materials information consult
label, MSDS, or Knight LLC. Knight products are not for use in potentially explosive environments. Any use of our
equipment in such an environment is at the risk of the user, Knight does not accept any liability in such
circumstances.
WARRANTY
All Knight controls and pump systems are warranted against defects in material and workmanship for a period of
ONE year. All electronic control boards have a TWO year warranty. Warranty applies only to the replacement or
repair of such parts when returned to factory with a Knight Return Authorization (KRA) number, freight prepaid, and
found to be defective upon factory authorized inspection. Bearings and pump seals or rubber and synthetic rubber
parts such as ―O‖ rings, diaphragms, squeeze tubing, and gaskets are considered expendable and are not covered
under warranty. Warranty does not cover liability resulting from performance of this equipment nor the labor to
replace this equipment. Product abuse or misuse voids warranty.
FOOTNOTE
The information and specifications included in this publication were in effect at the time of approval for printing. Knight
LLC reserves the right, however, to discontinue or change specifications or design at any time without notice and
without incurring any obligation whatsoever.
KNIGHT LLC,
Knight Headquarters
Tel: 949.595.4800
Fax: 949.595.4801
Page 16 of 16
USA Toll Free
Tel: 800.854.3764
Fax: 800.752.9518
A Unit of IDEX Corporation (www.knightequip.com)
Knight Canada
Tel: 905.542.2333
Fax: 905.542.1536
Knight Europe
Tel: 44.1293.615.570
Fax: 44.1293.615.585
Knight Australia
Tel: 61.2.9725.2588
Fax: 61.2.9725.2025
Knight N. Asia
Tel: 82.2.3481.6683
Fax: 82.2.3482.5742
Knight S. Asia
Tel: 65.6763.6633
Fax: 65.6764.4020
0901052 Rev: H (05/13)