Page 1
CENTERLINE™
CD Commercial Dishwasher
Models
CDH ML-130374
CDL ML-130375
Installation and
Operation Manual
0F-041220
From SN: #########
October 2021 Ver1.0
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CENTERLINE™ Installation and Operation Manual
F41220 (October 2021) Ver1.0 Page 2 of 60
MACHINE INSTALLATION CHECKLIST
Machine Serial Number ____________________
Machine Contents Verified
o Peg rack
o Combination flat rack
o Literature pack
▪ Installation and operations manual
▪ Programming card
▪ Operations and error card
▪ Operation and cleaning wall chart
o 3Ph to 1Ph conversion pack (CDH only)
▪ 3Ph to 1Ph conversion instructions
▪ Booster heater bridge bar gauge
o Small parts pack
▪ Chemical supply filters and weights (3x) (CDL only)
▪ Nozzle cleaning tool
o Machine legs (4x)
o Table support brackets (2x)
o Splash guard (2x)
o Wiring diagram (behind front panel)
o Drain hose (attached in machine base)
o Water supply hose (attached in machine base)
Machine legs installed and leveled (see section 5.5.2)
Machine Installation (See section 5.5)
Water Hookup (See section 5.6)
Drain Hookup (See section 5.7)
Electrical Hookup (See section 5.9)
o Voltage supplied to machine _______ V / 60 Hz / ___ Ph
o Machine adjusted for correct voltage (CDH only) (See section 5.9.3)
o Machine adjusted for correct phase (CDH only) (See section 5.9.4)
Vent Fan Control Connection (CDH only) (See section 6.1)
Chemical Hookups (See section 6.3)
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TABLE OF CONTENTS
1 Notes on the documentation ........................................................................................................... 7
1.1 Application ............................................................................................................................... 7
1.2 Layout of the documentation ................................................................................................... 7
1.3 Representative convention ...................................................................................................... 7
1.3.1 Symbols used ................................................................................................................... 7
1.3.2 Representation in the text ................................................................................................ 8
2 Safety instructions and regulations .................................................................................................. 8
2.1 Safety instructions and warning notices ................................................................................... 8
2.1.1 Hazard levels .................................................................................................................... 8
2.1.2 Layout of warning notices ................................................................................................. 8
2.2 Basic safety instructions ........................................................................................................... 8
2.2.1 Product safety .................................................................................................................. 8
2.2.2 Personnel qualification ..................................................................................................... 9
2.2.3 Product-specific hazards ................................................................................................... 9
2.3 Property damage ..................................................................................................................... 9
3 Product description ....................................................................................................................... 10
3.1 Intended purpose ................................................................................................................... 10
3.2 General .................................................................................................................................. 10
3.3 Designation ............................................................................................................................ 11
3.4 Technical specifications .......................................................................................................... 11
4 Controls (See Operations section 8.4) ............................................................................................ 11
5 Installation..................................................................................................................................... 12
5.1 Personnel qualification ........................................................................................................... 12
5.2 Special safety instructions ...................................................................................................... 12
5.3 Transporting to the installation location ................................................................................. 13
5.4 Unpacking .............................................................................................................................. 13
5.5 Installing the machine ............................................................................................................ 14
5.5.1 Installation Codes ........................................................................................................... 14
5.5.2 Attaching legs ................................................................................................................. 14
5.5.3 Location ......................................................................................................................... 14
5.5.4 Corner Installation .......................................................................................................... 15
5.6 Connecting the water ............................................................................................................. 17
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5.6.1 Water Requirements ...................................................................................................... 17
5.6.2 Water Connection .......................................................................................................... 17
5.7 Connecting the drain .............................................................................................................. 20
5.8 Venting Requirements............................................................................................................ 22
5.8.1 Rate of Exhaust Flow Calculations ................................................................................... 22
5.9 Connecting to the power supply ............................................................................................. 23
5.9.1 Electrical Data ................................................................................................................ 23
5.9.2 Electrical Connection ...................................................................................................... 24
5.9.3 CDH Electrical Connections ............................................................................................. 25
5.9.4 CDH Conversion from 3-Phase to 1-Phase Configuration................................................. 26
5.9.5 CDL Electrical Connections .............................................................................................. 27
6 Equipment Connections ................................................................................................................. 28
6.1 Vent Fan Control .................................................................................................................... 28
6.2 Centerline Supplied Detergent and Rinse Aid Pump Installation ............................................. 28
6.3 Detergent and Rinse Agent Dispensers ................................................................................... 28
6.3.1 Detergent Dispenser Tubing ........................................................................................... 29
6.3.2 Detergent Sensor............................................................................................................ 29
6.3.3 Rinse Agent Dispenser Tubing......................................................................................... 29
6.3.4 Detergent and Rinse Agent Electrical Connections .......................................................... 30
6.4 Liquid Chemical Bottle/Bucket Level Sensors (Optional) ......................................................... 31
7 Chemical Supply Set Up ................................................................................................................. 32
7.1 Personnel qualification ........................................................................................................... 32
7.2 Preparing the chemical supply tubing ..................................................................................... 32
7.3 Setup of external chemical bottles/buckets ............................................................................ 33
7.3.1 Standard suction tubes ................................................................................................... 33
7.3.2 Optional detergent, rinse aid, and sanitizer chemical level sensors ................................. 33
7.4 Filling chemical tubing (See Operator Menu for priming – section 9.1) ................................... 33
8 Operation ...................................................................................................................................... 34
8.1 Personnel qualification ........................................................................................................... 34
8.2 Special safety instructions ...................................................................................................... 34
8.3 Notes for optimal washing result ............................................................................................ 34
8.4 Preparation for washing ......................................................................................................... 34
8.4.1 Preparing the machine ................................................................................................... 34
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8.4.2 Preparing the ware for washing ...................................................................................... 35
8.5 Washing ................................................................................................................................. 36
8.5.1 Extending wash time ...................................................................................................... 36
8.6 Switch off machine ................................................................................................................. 37
8.7 Daily cleaning or after each meal period................................................................................. 37
8.8 Weekly cleaning ..................................................................................................................... 38
8.9 Removing hard water deposits (Deliming) .............................................................................. 38
8.10 Rinse Nozzle cleaning ............................................................................................................. 40
9 Settings ......................................................................................................................................... 41
9.1 Overview of operator menu ................................................................................................... 41
9.2 Opening the operator menu ................................................................................................... 42
9.3 Extended wash time ............................................................................................................... 42
9.4 Cycle count ............................................................................................................................ 43
9.5 Detergent dispensing (CDL and CDH with internal chemical pumps) ....................................... 44
9.5.1 Setting detergent dispensing amount ............................................................................. 44
9.5.2 Priming detergent dispensing pump ............................................................................... 45
9.5.3 Inspecting detergent supply ........................................................................................... 46
9.5.4 Detergent supply level sensor (Optional) ........................................................................ 47
9.6 Rinse agent dispensing (CDL and CDH with chemical internal pumps) ..................................... 47
9.6.1 Setting rinse agent dispensing amount ........................................................................... 47
9.6.2 Priming rinse agent dispensing pump ............................................................................. 48
9.6.3 Inspecting rinse aid supply .............................................................................................. 49
9.6.4 Rinse aid supply level sensor (Optional) .......................................................................... 49
9.7 Sanitizer dispensing (CDL machine only) ................................................................................. 49
9.7.1 Setting sanitizer dispensing amount ............................................................................... 49
9.7.2 Priming sanitizer dispensing pump ................................................................................. 50
9.7.3 Inspecting sanitizer supply .............................................................................................. 52
9.7.4 Sanitizer supply level sensor (Optional) .......................................................................... 52
9.8 Temperature display units ...................................................................................................... 52
9.9 Chemical Pump Controls (CDH Only) ...................................................................................... 53
9.10 Aux Channels ......................................................................................................................... 54
9.11 Aux Channels ......................................................................................................................... 54
9.12 Aux Channels ......................................................................................................................... 54
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9.13 Software Version / Machine Program ..................................................................................... 54
10 Display of errors and information .................................................................................................. 55
10.1 Error ...................................................................................................................................... 55
10.2 Information ............................................................................................................................ 57
11 Troubleshooting guide ................................................................................................................... 58
11.1 Poor wash results ................................................................................................................... 58
11.2 Other faults ............................................................................................................................ 59
12 Maintenance ................................................................................................................................. 59
13 Disposal ......................................................................................................................................... 59
14 Product disclaimer ......................................................................................................................... 59
15 Notes ............................................................................................................................................. 60
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1 NOTES ON THE DOCUMENTATION
1.1 Application
This document contains important information for the installation and startup of the machine by
qualified personnel, as well as the information required for day-to-day operation by the operator.
▶ Keep the operating instructions and all referenced documents in a safe and accessible place.
This Installation and Operations manual is subject to change. For the most up to date
manual visit www.CenterlineFoodEquipment.com/centerline-resources.
1.2 Layout of the documentation
Referenced documents are all instructions that describe the installation, operation, maintenance, and
repair of the device, as well as additional instructions for all accessories used.
For the operator:
– Operating instructions
For the qualified technician (available online):
– Installation instructions
– Circuit diagram
– Spare Parts Catalog
1.3 Representative convention
1.3.1 Symbols used
Symbol
Meaning
Warning of hazardous electrical voltage
Beware of hazardous substances
Beware of hazard area
Useful additional information and tips
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1.3.2 Representation in the text
Representation
Meaning
NOTE
Important information on machine operation, not a warning notice
Step
Outcome/result
−
Listing 1st level
•
Listing 2nd level
2 SAFETY INSTRUCTIONS AND REGULATIONS
2.1 Safety instructions and warning notices
During machine operation, observe the general safety instructions and warning notices that precede
each action.
2.1.1 Hazard levels
The hazard level is part of the safety instructions and is denoted by the signal word. Potential
consequences are differentiated by the choice of signal word.
potentially hazardous situation:
can cause serious physical injury
potentially harmful situation:
can cause damage to the product or other objects
2.1.2 Layout of warning notices
Warning notices are depicted with warning symbols and signal word in the corresponding safety colors.
WARNING!
Nature and source of the hazard
Explanation on the nature and source of the hazard.
Measures for averting the hazard
Additional measures for averting the hazard, where applicable.
2.2 Basic safety instructions
2.2.1 Product safety
The machine conforms to state-of-the-art technology and the recognized safety regulations.
Nonetheless, hazards may occur.
Operate the machine only if it is in good working order and in compliance with the operating
instructions.
WARNING
NOTICE
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2.2.2 Personnel qualification
Observe the regulations on occupational health and safety.
Carefully read through the operation manual before use.
Activity
Qualification/training
Installation/Setup
Qualified electrician and plumber
Work on the electrical system
Qualified electrician
Maintenance, repair
Hobart Service, or by qualified service technician
2.2.3 Product-specific hazards
Observe the instructions on the packaging for storage, lifting or transporting.
Avoid electric shock, risk of fire:
Do not allow water to flow under live components.
– Make sure the machine is correctly stored (see frost damage section 2.3).
– Make sure that the machine does not overflow when being filled.
Have the machine connected to the power supply by qualified personnel.
Have all maintenance to the machine carried out by qualified personnel.
Avoid chemical burns, irritation of the skin, poisoning:
Wear protective equipment (gloves, safety goggles, protective clothing) when handling chemicals.
Use only suitable chemicals. Observe the manufacturer’s instructions.
Do not open the machine during operation, wait for the cycle to finish.
For cleaning, wear protective equipment (gloves, safety goggles, protective clothing) when touching
parts contaminated by detergent.
Avoid burns, scalds:
Do not open the machine during operation, wait for the cycle to finish. Otherwise, hot water could
spray out.
2.3 Property damage
Avoid frost damage:
Temperatures below 32°F (0°C) lead to functional damage.
Before storing below 32°F (0°C), empty residual water in hoses, tank and booster.
Prior to restart, store the machine at room temperature (min. 60°F / 15°C) for 24 hours.
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3 PRODUCT DESCRIPTION
3.1 Intended purpose
The machine is an item of technical equipment intended solely for commercial dishwashing.
The machine is designed solely for cleaning ware (porcelain, glass, ceramic, temperature-resistant
plastics, stainless steel or similar) from the food industry.
3.2 General
Models CDH and CDL dishwashers can be configured for both straight through or corner operation. CDH
and CDL dishwashers are shipped from the factory in straight through configuration. Straight through
machines can be easily converted to corner operation.
The CDH dishwasher is designed to operate in high temperature sanitizing mode only (Designated by the
temperature requirements of 150°F Wash and 180°F Rinse. These temperatures can be found on the
label located on the lower, left part of the front panel).
The CDL dishwasher is designed to operate in chemical sanitizing mode only (Designated by the
temperature requirements of 120°F Wash and 120°F Rinse. These temperatures can be found on the
label located on the lower, left part of the front panel).
The serial number can be found on the machine data label located at the bottom of the right side of the
machine.
Hobart supplied chemical pumps ship standard with the CDL model. Chemical pumps are available as an
accessory kit (field installed) for the CDH model or contact your chemical representative for a chemical
feeder system to be supplied and installed by others. This machine must be operated with an automatic
detergent feeder, including a visual means to verify that detergents are delivered or a visual or audible
alarm to signal if detergents are not available for delivery to the washing systems. See instructions for
electrical and plumbing connections located in this manual and in the feeder equipment manual.
The wash pump motor has thermal overload protection.
The supply line incorporates an air gap on the CDH models and a vacuum breaker on the CDL model to
prevent any reverse flow of water from the dishwasher into the potable water supply. The unit, once
turned on, fills the wash tank to the appropriate level and automatically stops filling once the level is
reached. A pressure transducer reads the water level in the wash tank and shuts off the heat supply if
the water level becomes too low. When the water returns to the proper level, the heating circuit
becomes operational again.
An automatic pumped drain is standard on all models.
A pumped rinse system is standard on the CDH model.
A frame mounted 6.0kW electric booster water heater is equipped on the CDH high temperature
sanitizing model. The booster water heater is designed to maintain a minimum final rinse temperature
of 180°F provided the incoming water is at least 110°F.
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High-temperature models typically require a hood or vent over the dishwasher to meet local codes.
Low-temperature chemical sanitizing machines or low usage electric heat dishwashers may not require
individual venting of the machine if the room is amply exhausted. Refer to section 5.8 for venting and
hood requirements. Verify with local codes for final authority.
3.3 Designation
The rating label is located on the right side of the machine. If you have any questions regarding service
and parts, use the serial number in all communications.
3.4 Technical specifications
Model
CDH
CDL
Dimensions (H x W x D)
62.945 x 28.504 x 32.079 in
(159.9 x 72.4 x 81.5 cm)
62.945 x 28.714 x 32.079 in
(159.9 x 72.9 x 81.5 cm)
Water consumption per cycle
0.73 gal (2.8 L)
0.86 gal (3.3 L)
Hot water connection
110°F (43°C) min.
140°F (60°C) max.
120°F (49°C) min.
140°F (60°C) max.
Phase / Hz
3Ø / 60Hz
1Ø / 60Hz
1Ø / 60Hz
Voltage
208V
240V
208V
240V
120V
Total connected load
35.0 A
35.0 A
31.7 A
31.7 A
17.1 A
Fuse/breaker protection
40 A
40 A
40 A
40 A
20 A
Tank capacity
7.9 gal (30.0 L)
4.0 gal (15.0 L)
Loading height
34.938 in (88.7 cm)
34.938 in (88.7 cm)
Machine weight
210 lbs. (95 kg)
199 lbs. (90 kg)
4 CONTROLS (SEE OPERATIONS SECTION 8.4)
1
Power/Drain Button
Pressing this button switches the machine on, fills and
heats the wash tank.
1
4
3 2 5
6
7
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Pressing and holding (3 seconds) activates self-cleaning
cycle, drains machine, and then switches the machine
off automatically.
2
Start Button
Pressing this button or closing the door starts the wash
cycle. If button is pressed within 10 seconds after the
cycle has started, the extended wash cycle is activated.
3
Menu Button
Pressing this button enters the configuration menu.
4
Delime Button
Pressing and holding this button (3 seconds) initiates
the deliming cycle.
5
Temperature Display, Wash Tank
Displays wash tank temperature while machine is idle
or in a wash cycle.
6
Temperature Display, Rinse
Displays rinse temperature only during rinse cycle.
7
Temperature Units
LED lights for °F or °C
5 INSTALLATION
5.1 Personnel qualification
Installation must only be carried out by qualified personnel.
5.2 Special safety instructions
WARNING!
Risk of electric shock, fire hazard
Water (frost damage, machine overflow) flowing over live components can cause injury
from electric shock or fire.
Do not allow water to flow under live components.
Make sure the machine is correctly stored.
Make sure that the machine does not overflow when being filled.
NOTICE!
Frost damage
Temperatures below 32°F (0°C) during transport/storage cause function impairments.
Prior to installation, store machine at room temperature (min. 60°F / 15°C) for 24
hours.
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5.3 Transporting to the installation location
Where possible transport packed on the pallet.
Use suitable transport means (forklift or hand truck, etc.).
5.4 Unpacking
Remove packaging materials and accessories from the machine.
Packaged in machine
• Peg rack
• Combination flat rack
• Literature pack
Installation and operations manual
Programming card
Operations and error card
Operation and cleaning wall chart
• 3Ph to 1Ph conversion pack (CDH only)
3Ph to 1Ph instructions (CDH only)
Booster heater bridge bar gauge
• Small parts pack
Chemical supply filters & weights (3x) (CDL only)
Nozzle cleaning tool
• Machine legs (4x)
• Table support brackets (2x)
• Splash guard (2x)
• Wiring diagram (behind front panel)
• Drain hose (attached in machine base)
• Water supply hose (attached in machine base)
Immediately after unpacking the dishwasher, check for possible shipping damage. If this machine is
found to be damaged, save packaging materials and contact the carrier within 5 days of delivery.
NOTICE!
Unpacking
Use caution when using a forklift to remove machine from pallet. Do NOT use door lift
handle to move machine, as it will cause door lift issues.
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5.5 Installing the machine
Prior to installation, test the electrical supply to ensure it agrees with the specifications on the machine
data label, which is located on the lower, right side of the machine.
5.5.1 Installation Codes
Installation must be in accordance with state and local codes and the National Electrical Code
ANSI/NFPA70 (latest edition). In Canada, the installation code is CSA 22.1 (latest edition).
5.5.2 Attaching legs
The machine is shipped without the legs attached.
Install the provided legs in each of the bottom corners of the machine.
The machine must be level to operate properly. Place the dishwasher in its operating
location. Level the machine before any connections are made. Using a carpenter's level
placed diagonally on the rack tracks, level the machine front to back and side to side by
turning the adjustable feet in or out.
5.5.3 Location
Before finalizing the location, make sure that consideration has been given for the electrical conduit,
water supply, drain connection, venting (if applicable), tabling (if needed), chemical feeder
replenishment (if applicable) and adequate clearance for opening the door.
The edge of dish table that overhangs the machine wash tank should be turned down and fitted over the
top of the dishwasher tank. Apply an NSF approved sealant between the overhang of the dish table and
the inner wall of the wash tank to prevent leakage.
The dish tables are fastened to the machine using the included table support brackets. The support
brackets mount underneath the tabling and fasten to the machine using M5 screws included with the
machine. After the support bracket is aligned with the tabling, drill a locating hole and fasten using non-
rusting ¼” screws and locking nuts. Attach the included splash guards at the rear of the tabling using
non-rusting ¼” screws and locking nuts. The splash guards can be adjusted for fit depending on the
width of the tabling.
Machine
Leg
Adjustable
Foot
Straight-Through Operation Shown
Dish Table
Wash Tank
Dish Table
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For straight-through installations, 30" clearance at the front and 15" clearance at the right side by 331/8” clearance above the finished floor must be provided for service.
5.5.4 Corner Installation
Before placing the dishwasher in its operating location, check machine configuration. If the machine is
being installed in a corner, clearances of 30" out from the dishwasher under the left-hand tabling by 331/8" above the finished floor and 15” out from the dishwasher at the right side by 33-1/8" above the
finished floor must be provided for servicing. For proper installation of a corner machine, the right
corner of the machine should be positioned where the two tables meet so that the gauges (if equipped)
are visible to the operator.
Corner Operation Shown
Dish Table
Wash Tank
Dish Table
Right Corner
Of Machine
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For corner installations, reposition the rack guide to the left side of the rack track using the following
procedure.
Remove two nuts and screws securing front rack guide to rack track and remove rack guide.
Position rack guide on left side of rack track aligning holes in rack guide to spacers on rack track.
Secure using hardware removed in the first step. Note: Nuts should be installed on the inside of the
rack track.
A splash shield kit is available (at extra cost) for corner installations to prevent excessive splashing on
wall. Order sales accessory CORNER-INST-CD or service kit part number 00-563652. For installation,
refer to F-45915 installation instructions supplied with kit.
For corner installations, a notch is required on both the front lip and the backsplash on the left tabling to
prevent interference with the door mechanism.
The left side splash guard is designed to be easily modified to fit the notch.
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5.6 Connecting the water
NOTE: The machine must be operated with potable water.
5.6.1 Water Requirements
Proper water quality can improve ware washing performance by reducing spotting, enhancing
effectiveness of labor, and extending equipment life. Water conditions vary from one location to
another. The recommended proper water treatment for effective and efficient use of this equipment
will also vary depending on the local water conditions. Ask your municipal water supplier for details
about your local water conditions prior to installation.
Recommended water hardness is 3 grains of hardness per gallon or less. Higher hardness may cause
excessive formation of lime scale. Water hardness above 3 grains per gallon requires water treatment.
Water treatment has been shown to reduce costs associated with machine cleaning, reduce deliming of
the dishwasher, and reduce detergent usage in the dishwasher.
NOTICE!
Water quality
High iron levels in the water supply can cause staining and may require an iron filter.
High chloride levels in the water supply can cause pitting and may require a chloride
removal system. Contact Hobart Service or your local water treatment professional for
proper water treatment.
Sediment may require a particulate filter. Dissolved solids may require water treatment
such as a water softener, reverse osmosis system, etc. Contact Hobart Service or your
local water treatment professional for proper water treatment.
5.6.2 Water Connection
A water hammer arrestor (meeting ASSE-1010 Standard or equivalent) should be installed (supplied by
others) in the common water supply line at the service connection.
The plumber connecting this machine is responsible for making certain that water lines are
THOROUGHLY FLUSHED OUT BEFORE connecting to the dishwasher. This "flush-out" is necessary to
remove all foreign matter, such as chips (resulting from cutting or threading of pipes), pipe joint
compound from the lines; or, if soldered fittings are used, bits of solder or cuttings from the tubing.
Debris, if not removed, may lodge in the dishwasher's plumbing components and render them
inoperative. Solenoid valves fouled by foreign matter and any expenses resulting from this fouling are
NOT the responsibility of the manufacturer and associated repair costs are not covered under warranty.
A manual shutoff valve (not supplied) should be installed upstream of the fill hose to accommodate
servicing the machine. It is recommended that a line strainer (80 mesh) (not supplied) be installed in the
supply line between the manual shutoff valve (not supplied) and the connection point on the machine.
Make plumbing connections with ½” minimum copper piping OD (¾” recommended), with a ¾” male
garden hose fitting (not supplied).
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Connect to hot water
A water supply hose is provided.
Temperature:
Model
Sanitizing
Mode
Connection
Water Supply
Minimum
Maximum
Recommended
CDH
High Temperature
Sanitizing
Hot Water
110°F (43°C)
N/A
140°F (60°C)
CDL
Chemical
Sanitizing
Hot Water
120°F (49°C)
N/A
140°F (60°C)
Water hardness: max. 3 grains
Flowing pressure:
Model
Flowing Pressure
Note
CDH
15 psi – 65 psi (1 bar – 4.5 bar)
Recommended
> 65 psi (4.5 bar)
Provide pressure regulating valve (not supplied)
< 15 psi (1 bar)
Improper machine operation may result
Pumped rinse system; Water pressure gauge is not required
Model
Flowing Pressure
Note
CDL
15 psi – 25 psi (1 bar – 1.7 bar)
Normal; 20 psi (1.4 bar) recommended
> 25 psi (1.7 bar)
Provide pressure regulating valve (not supplied)
< 15 psi (1 bar)
Improper machine operation may result
Pressure rinse system; Water pressure gauge is supplied
The supply hose, 110” long, is provided with the machine and is
shipped already attached and coiled up inside the machine.
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Remove the screws holding the rear cover
panel to the machine and lift off panel.
Remove the screws holding the right, side
cover panel to the machine and lift off
panel.
Uncoil the supply hose and route through the supplied
bushing located on the back of the machine base.
Note that:
– The bushing might need to be removed to be able to
fit the supply hose nut through it.
Replace the right, side cover panel
Replace the rear cover panel
CDL
CDH
Bushing
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Connect the end of the water supply hose (¾” garden
hose thread) to the building shut off valve.
Note that:
– Do not kink or cut the water supply hose.
– Any required extension must be made using a
suitable pressure hose.
5.7 Connecting the drain
A drain hose, 19mm inside diameter and 110” long, is provided with
the machine and is shipped attached and coiled up inside the
machine.
WARNING!
Plumbing connections
Plumbing connections must comply with applicable sanitary, safety, and plumbing
codes.
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Remove the screws holding the rear cover
panel to the machine and lift off panel.
Uncoil the drain hose and route through the supplied
bushing located on the back of the machine base.
Note that:
– The connection between machine and building drain
must not exceed a maximum height of 34” above
finished floor.
– Drain must have a minimum flow capacity of 5 gallons
per minute. If DWT is on the machine, the drain must
have a minimum flow capacity of 15 gallons per
minute.
– If a grease trap is required by code, it should have a minimum flow capacity of 15 gallons per
minute.
– A pumped drain air gap kit is available using accessory code PMP-DRAIN-AM16 or service kit
part number 00-562723-00002. Refer to installation instructions included with kit.
– If machine is located directly above a floor drain, a knockout in the bottom of the dish machine
is provided for the drain hose.
– Use care not to kink the drain hose.
Replace the right, side cover panel
Replace the rear cover panel
CDL
CDH
Bushing
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NOTICE!
Drain connection
An improper drain connection or a kinked hose could result in reduced machine
performance and errors. An air gap connection is the preferred connection method.
5.8 Venting Requirements
NOTICE!
Exhaust Hood
Any commercial exhaust hood must be installed according to all local and national codes
and the manufacturer’s installation instructions, if applicable.
5.8.1 Rate of Exhaust Flow Calculations
Based on the 2018 International Mechanical Code.
The minimum net airflow for Type II hoods used for
dishwashing appliances shall be 100 cfm per linear foot of
hood length. The net quantity of exhaust air shall be
calculated by subtracting any airflow supplied directly to a
hood cavity from the total exhaust flow rate of a hood.
According to 507.3 of the 2018 IMC, Type II hoods are not
required where the heat and moisture load is incorporated
into the HVAC system design. See Table A for heat
dissipation or heat gain to space.
Incorrect
Acceptable
Preferred
(Meets Code Requirements)
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Table A: HEAT DISSIPATION
Model
Sanitizing
Mode
Voltage
Phase
Electric
Heat
Electric
Booster
Latent
Heat
(BTU/Hr)
Sensible
Heat
(BTU/Hr)
CDH
High
Temperature
208V
3Ø
X X 16,100
6,900
240V X X
20,400
8,700
208V
1Ø
X X 9,300
4,000
240V X X
12,000
5,200
CDL
Chemical
120V
1Ø X --
2,300
1,000
Assumptions:
1. Machines operate 70% of each hour while in use.
2. Values shown are heat that enters room.
3. 70% of heat output is latent, 30% is sensible.
5.9 Connecting to the power supply
WARNING!
Risk of electric shock
Electrical and grounding connections must comply with the applicable portions of the
National Electrical Code, NFPA 70 (latest edition) and/or other local electrical codes.
Disconnect the electrical power to the machine and follow lockout/tagout
procedures.
5.9.1 Electrical Data
Refer to the sizing diagram located inside the front trim panel and to the data label on the lower, right
side of the machine for service size requirements when connecting the dishwasher. Also, refer to the
Electrical Data, shown below.
NOTICE!
Supply connections
For supply connections, use copper wire only rated at 90°C minimum.
The dish machine is not provided with internal GFCI protection.
A fused disconnect switch or circuit breaker (customer supplied) must be installed
in the electrical service line supplying this dishwasher and should meet the
requirements of your local electrical code.
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ELECTRICAL DATA
Model
Volts/Hertz
Phase
Rated
Ampacity
Minimum
Supply Circuit
Conductor
Ampacity
Maximum
Protective
Device
Ampacity
CDH
208/60
3Ø
35.0
40
40
240/60
35.0
40
40
208/60
1Ø
31.7
40
40
240/60
31.7
40
40
CDL
120/60
1Ø
17.1
20
20
Compiled in accordance with the National Electrical Code NFPA-70 (latest addition).
5.9.2 Electrical Connection
Remove the lower front panel by removing the two
screws at the bottom of the panel.
A hole for 1” trade size conduit is supplied at the
lower center in the back of the machine.
Install 1” trade size conduit or cable and fitting.
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Make electrical connections at 1TB according to wiring diagram supplied with the machine and
secure wires to the machine service connection. Keep excess wire in the base of the unit to a
minimum. A cable support and hole for a strain relief are supplied to facilitate wire routing.
5.9.3 CDH Electrical Connections
The CDH machine ships standard with 240V, 3-phase voltage supply and a single point electrical
configuration.
The standard single point supply connects to the terminal block 1TB in the controls area.
The machine must be grounded according to electrical code(s); A grounding terminal in 1TB is provided.
1TB
CDH
CDL
1TB
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NOTICE!
Transformer connections (CDH Only)
For the CDH machine a control transformer is used to step the 208V or 240V incoming
power to 120V for the control circuitry and drain pump. The transformer is factorypreset to 240V.
For 208V incoming power, relocate the jumper bar connecting 3TB-1 and 3TB-2 (for 240V) to 3TB-2
and 3TB-3 (for 208V). Refer also to F-45912 instructions and the wiring diagram supplied with the
machine.
An incorrectly connected transformer can lead to machine draining issues.
5.9.4 CDH Conversion from 3-Phase to 1-Phase Configuration
The CDH machine ships standard in 3-phase voltage configuration. It can be changed to operate in a
1-phase configuration.
NOTICE!
1-Phase Conversion Procedure
The conversion procedure must be done only by a qualified electrician.
To change machine from 3-phase to 1-phase configuration, refer to F-45912 instructions included in
the literature shipped with the machine.
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NOTICE!
208V or 240V electrical connections (CDH, 1-Phase Only)
The 208V or 240V electrical connection for the CDH machine in 1-phase configuration
requires two hot wires and a ground. There is no current carrying neutral used.
5.9.5 CDL Electrical Connections
The CDL machine ships standard with 120V, 1-phase voltage supply and a single point electrical
configuration. The supply connects to the terminal block 1TB in the controls area.
The machine must be grounded according to electrical code(s); A grounding terminal in 1TB is provided.
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6 EQUIPMENT CONNECTIONS
WARNING!
Risk of electric shock
Electrical and grounding connections must comply with the applicable portions of the
National Electrical Code, NFPA 70 (latest edition) and/or other local electrical codes.
Disconnect the electrical power to the machine and follow lockout/tagout
procedures. Be sure all circuits are disconnected.
6.1 Vent Fan Control
The vent fan control feature is standard on the CDH model. The vent fan control
relay provides switch contacts only and does not provide power to the vent fan
motor. The rating for the vent fan control relay connected to terminals VFC1 and
VFC2 on 5TB is 1.5 amps at nameplate supply voltage. When the dishwasher is
connected to the vent fan, the vent fan is switched on when the dishwasher is
on, and off when the dishwasher is off.
6.2 Centerline Supplied Detergent and Rinse Aid Pump Installation
The CDL chemical sanitizing model ships standard with chemical pumps. Onboard chemical pumps are
available as an accessory kit for the CDH high temperature sanitizing model. Order sales accessory code
CHEMPUMP-CDH or service part # 00-563322. For installation refer to F-45914 Installation Instructions
shipped with the accessory kit.
6.3 Detergent and Rinse Agent Dispensers
(For chemical systems supplied by others)
(CDH High Temperature Sanitizing model only)
Detergent and rinse agent dispensers not provided by Centerline by Hobart must have all connections
sealed against leakage.
The CDH high temperature sanitizing model uses 0.73 gallons [2.8 liters] of rinse water per rack at a flow
rate of 2.75 gallons per minute [10.4 liters per minute]. This information is used when setting the
detergent and rinse agent pumps.
NOTICE!
Pressure Gauge
The CDH high temperature sanitizing model utilizes a pumped rinse system. A
pressure gauge is not required.
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6.3.1 Detergent Dispenser Tubing
The dishwasher has a 9/16” [15mm] diameter barbed fitting
located on the rear, right chamber for installation of the
detergent feeder tube.
6.3.2 Detergent Sensor
The dishwasher has a 7/8” [22mm] diameter hole located on
the lower, left side of the tank used for installation of the
detergent sensor.
Remove the lower left panel by removing the two screws
at the bottom of the panel.
Remove the detergent sensor plug.
6.3.3 Rinse Agent Dispenser Tubing
The dishwasher has an 1/8” NPT port located on the rear,
right chamber for installation of the rinse agent feeder
tubing.
Remove the 1/8" NPT plug for installation of the rinse
agent dispenser tubing as needed.
Detergent Feeder Fitting
Detergent Sensor Plug
Rinse Aid Port
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6.3.4 Detergent and Rinse Agent Electrical Connections
WARNING!
Risk of electric shock
Electrical and grounding connections must comply with the applicable portions of the
National Electrical Code, NFPA 70 (latest edition) and/or other local electrical codes.
Disconnect the electrical power to the machine and follow lockout/tagout
procedures. Be sure all circuits are disconnected.
This machine must be operated with an automatic detergent feeder, including a visual means to verify
that detergents and sanitizers are delivered or a visual or audible alarm to signal if detergents and
sanitizers are not available for delivery to the respective washing and sanitizing systems. Refer to the
installation section of this manual and to the chemical feeder equipment manual(s).
Detergent Dispenser
Terminals DET1 and DET2 on 4TB are supplied with controlled 120V voltage. They are ON during the
wash cycle and OFF between cycles, when machine is in delime cycle, or when the machine power
supply is off.
Terminals L1 and L2 on 5TB are supplied with fused machine line voltage for convenience in powering
detergent dispensing equipment. The maximum rating for any equipment connected to L1 and L2 is 2.0
amps at line voltage.
Rinse Agent Dispenser
Terminals RNS1 and RNS2 on 4TB are supplied with controlled 120V voltage. They are ON during the
rinse cycle and OFF between cycles, when machine is in delime cycle, or when the machine power
supply is OFF.
Terminals L1 and L2 on 5TB are supplied with fused machine line voltage for convenience in powering
rinse agent dispensing equipment. The maximum rating for any equipment connected to L1 and L2 is
2.0 amps at line voltage.
NOTICE!
DET1, DET2, RNS1, and RNS2 Connections
The maximum rating for detergent or rinse agent dispenser control connected to
DET1, DET2, RNS1, and RNS2 is 100 mA at 120V voltage.
Use UL listed 600-volt minimum insulated wire for the connections.
Splice connections, if required, must be made in the feeder transformer junction
box (supplied by others) – not in the main controls enclosure.
Strain relief fittings must be provided for all wiring.
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Remove the bushing and use the 7/8”
diameter knock out located underneath
the machine on the back, right side for
½” trade size conduit fitting.
6.4 Liquid Chemical Bottle/Bucket Level Sensors (Optional)
The CDH high temperature sanitizing model does not come standard with chemical sensing. Detergent
and rinse agent chemical level sensors with electronic notification are available as an accessory kit for
the CDH high temperature sanitizing model. Order sales accessory code CHEMSENSORS-CU or service
part # 00-562473. For installation refer to F-45786 Installation Instructions shipped with the accessory
kit.
The CDL chemical sanitizing model ships standard with visual chemical
supply indicators. Detergent, rinse agent, and sanitizer chemical level
sensors with electronic notification are available as accessory kits for
the CDL chemical sanitizing model. Order sales accessory codes
CHEMSENSORS-CU (detergent and rinse agent) and CHEMSENSORS-CDL
(sanitizer) or service parts # 00-562473 (detergent and rinse agent) and
# 00-562470-00002 (sanitizer). For installation refer to F-45786 Installation Instructions shipped with
the accessory kits.
Transformer
(By Others)
Primary
Secondary
Detergent
Dispenser
Transformer
(By Others)
Primary
Secondary
Rinse Agent
Dispenser
L1
208-240V, 2.0A MAX
L2
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7 CHEMICAL SUPPLY SET UP
(For machines equipped with Centerline by Hobart chemical pumps)
7.1 Personnel qualification
Set up must only be carried out by qualified personnel (see section 2.2.2).
7.2 Preparing the chemical supply tubing
Preparing the chemical supply tubing:
Remove the screws holding the rear cover
panel to the machine and lift off panel.
Remove the screws holding the right, side
cover panel to the machine and lift off
panel.
Locate the chemical tubing in the base of
the machine.
Separate the tubing corresponding to the
chemical labels:
The clear tubing – Detergent
The blue tubing – Rinse Aid
The clear tubing – Sanitizer (CDL Only)
Route the chemical tubing through the supplied bushing
located on the back of the machine base.
Attach the weight and filters supplied in the small part bag to the ends of the
tubing.
CDL
CDH
Bushing
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7.3 Setup of external chemical bottles/buckets
Preparing the detergent, rinse aid
Preparing the sanitizer (CDL only)
Suction height of detergent, rinse aid, and sanitizer pumps: max. 5 ft
7.3.1 Standard suction tubes
Standard suction tubes
Place clear suction tubing marked for detergent at the bottom of the
external detergent bottle/bucket.
Place blue suction tubing marked for rinse aid at the bottom of the
external rinse aid bottle/bucket.
Place clear suction tubing marked for sanitizer at the bottom of the
external sanitizer bottle/bucket.
7.3.2 Optional detergent, rinse aid, and sanitizer chemical level sensors
Optional detergent, rinse aid, and sanitizer chemical level sensors
If the machine has installed the optional detergent, rinse aid, and sanitizer
chemical level sensing wands (see section 6.4) then:
Place the chemical level sensing wand into the external bottle or bucket
so that the float end of the sensor touches the bottom of the container.
The detergent and rinse aid wands will have a black stopper and
black electrical wire.
The sanitizer wand (CDL only) will have a blue stopper and blue electrical wire.
Adjust the stopper on the chemical level sensing wands to seal to the bottle or bucket.
Make sure the chemical level sensing wand is correctly inserted into the
container with the float sensor at bottom of the
container.
7.4 Filling chemical tubing (See Operator Menu for priming – section 9.1)
WARNING!
Chemical burns, irritation of the skin
Filling the chemical tubing with detergent, rinse aid or sanitizer for the first time
incorrectly can cause serious injury.
Wear protective equipment (gloves, safety goggles, protective clothing) when
handling chemicals.
Observe the manufacturer’s application and safety instructions.
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8 OPERATION
8.1 Personnel qualification
The machine must be operated by qualified personnel.
8.2 Special safety instructions
WARNING!
Chemical burns, irritation of the skin, scalding
If the door is opened during operation, wash water can spray out and cause injury.
Do not open the door during operation, wait for the cycle to finish.
8.3 Notes for optimal washing result
The rinse result is significantly affected by the water quality. If the mineral content is high, the minerals
dissolved become visible on the glasses in the form of spots and streaks during the drying process.
A HOBART trained service technician can determine the water's mineral content by
measuring the grains. Recommended water hardness is 3 grains of hardness per gallon
or less. Higher hardness may cause excessive formation of lime scale. Water hardness
above 3 grains per gallon requires water treatment.
If you have any questions, please contact your authorized HOBART service partner.
8.4 Preparation for washing
8.4.1 Preparing the machine
Check correct position of pump strainer and tank strainers and proper
installation of upper and lower wash/rinse arms.
Open building water shut-off valve.
CDH
CDL
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Turn on main switch or breaker.
Check level of detergent and rinse aid in containers
(See sections 9.5.3 and 9.6.3).
For CDL machine, check level of sanitizer in container (See section 9.7.3).
For machines equipped with Centerline by Hobart chemical pumps,
check that there are chemicals present.
Close door.
Press the Power/Drain button.
During the filling and heating processes, the Power/Drain button LED flashes. This process can
take several minutes.
As soon as the LED is permanently lit on both the Power/Drain button LED and the Start button
LED, the machine is ready for operation.
8.4.2 Preparing the ware for washing
Remove heavy food residue.
Load ware into rack.
Rinse off ware.
Never use steel wool on ware to be loaded into the dishmachine.
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8.5 Washing
Open door.
Slide rack into the machine and close the door. The wash
cycle will start automatically.
While the washing cycle is running, the Start button
LED flashes. As soon as the Start button LED lights up
permanently, the rinsing process is complete, and
cycle ends.
The wash temperature is shown in the upper display
for the entire cycle.
The rinse temperature is shown on the lower display
only during the rinsing portion of the cycle.
Open the door and remove the rack.
Allow the ware enough time to dry.
8.5.1 Extending wash time
For heavier soiled ware, the wash cycle time can be extended by up to 4 minutes. (See section 9.3)
To extend the washing time, start a normal washing cycle by closing the door and within the first 10
seconds of the cycle starting, press the Start button.
While the extended washing cycle is running, both the Start button LED and the Menu button
LED flashes. As soon as the Start button LED lights up permanently, the rinsing process is
complete, and cycle ends.
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8.6 Switch off machine
Press and hold the Power/Drain button (3 seconds).
During draining, the display will show “drA in”.
During draining, the Power/Drain button LED flashes.
During draining, the machine interior is rinsed automatically, and the tank and booster
are emptied. (CDH only)
At the end of the draining cycle, the machine switches off automatically.
When the machine has switched off:
Remove any heavy food residues.
Turn off main switch or breaker.
Close building water shut-off valve.
8.7 Daily cleaning or after each meal period
NOTICE!
Property damage
The use of unsuitable agents can cause corrosion damage.
Do not use any bleach, acids, or metal-containing additives to clean the machine.
Do not use metal brushes.
Open the door, remove tank and pump strainers.
Rinse under running water. Make sure that food
debris does not enter pump intake when the pump
strainer is removed.
Clean machine interior.
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Replace pump and tank strainers.
Allow time for interior to dry.
8.8 Weekly cleaning
Depress two buttons on side of lower combination wash
and rinse arm.
Remove and clean combination wash and rinse arm.
Repeat for upper arm.
Replace all parts.
8.9 Removing hard water deposits (Deliming)
The dishwasher should be delimed on a regular basis as required. How often depends on the mineral
content of the water. Deliming should be done when you can see clear signs of lime deposits (a white
chalky substance) on the inside walls, on the wash and rinse arms or tank heater. Inspect the machine
interior for lime deposits. When deliming is necessary, a deliming agent (such as Lime-A-Way® or LSR®)
should be used for best results.
WARNING!
Chemical mixing
Deliming solution must not come in contact with bleach or rinse solution containing
bleach. Mixing may cause hazardous gas to form. This entire procedure must be
followed step-by-step for safe and satisfactory results.
CDL
CDH
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This machine is equipped with an automatic delime cycle reminder. It is recommended that deliming be
done when the Delime button LED is flashing. Deliming can also be initiated at any other time if deemed
necessary.
Machine must be on and at a ready state (Power/Drain button LED lit permanently).
Open the door, remove tank strainers. Rinse under
running water.
Replace tank strainers.
Close door.
The machine will automatically enter a washing
cycle.
After the wash cycle has completed, press and hold the Delime button (minimum 3 seconds).
The upper display will show “SdL” to show that the delime cycle has started.
The machine will enter a drain and rinse phase. During this phase the delime button LED will be
lit continuously.
The deliming cycle is extensive and can take 30 minutes or more to complete.
When ready to add deliming agent, the upper display will show “Add”. The delime button LED
will flash.
Open the door.
Add the correct amount of deliming agent to the tank according to the manufacturer’s instructions
(Refer to section 3.4 for tank volume).
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WARNING!
Chemical burns, irritation of the skin.
The use of unsuitable chemicals can cause injury.
Use only commercial deliming agent.
Observe the manufacturer’s application and safety instructions.
Close the door.
The deliming process will continue. The delime button LED will be lit continuously.
The upper display will show “dL”.
When the deliming phase completes, the machine will enter a drain and rinse phase. During this
phase the delime button LED will be lit continuously.
After the deliming process is completed, the machine will drain and shut down.
8.10 Rinse Nozzle cleaning
Should the rinse nozzles become clogged with hard water deposits or other debris, use the included
nozzle cleaning tool to clear the nozzle openings.
If the nozzle cleaning tool is not available, a small, pointed object, such as a paperclip
can be used.
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9 SETTINGS
9.1 Overview of operator menu
CDH (High Temperature Sanitizing Machine)
Item
Menu Function
Function
00
Extended Wash Time
Sets extended wash time
01
Cycle Count (Rinse)
Displays number of wash/rinse cycles completed
02
Detergent Setpoint
Setting of detergent concentration (g/l)
03
Detergent Pump Prime
Primes detergent pump
04
Rinse Aid Setpoint
Setting of rinse aid concentration (g/l)
05
Rinse Aid Pump Prime
Primes rinse aid pump
08
Temperature Units
Sets temperature display to °F or °C
09
Chemical Pump Control
Setting of chemical pump configuration
10
Aux Channel
Internal functions
11
Aux Channel
Internal functions
12
Aux Channel
Internal functions
13
Software
Software version / Machine type
CDL (Chemical Sanitizing Machine)
Item
Menu Function
Function
00
Extended Wash Time
Sets extended wash time
01
Cycle Count (Rinse)
Displays number of wash/rinse cycles completed
02
Detergent Setpoint
Setting of detergent concentration (g/l)
03
Detergent Pump Prime
Primes detergent pump
04
Rinse Aid Setpoint
Setting of rinse aid concentration (g/l)
05
Rinse Aid Pump Prime
Primes rinse aid pump
06
Sanitizer Setpoint
Setting of sanitizer concentration (ppm)
07
Sanitizer Pump Prime
Primes sanitizer pump
08
Temperature Units
Sets temperature display to °F or °C
10
Aux Channel
Internal functions
11
Aux Channel
Internal functions
12
Aux Channel
Internal functions
13
Software
Software version / Machine type
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9.2 Opening the operator menu
Note: Machine must be in ready (idle) state.
Press the Menu button to access operator program settings.
The menu opens, and the Menu button LED illuminates.
The upper display will show the first item “00”.
To scroll from one item to the next, press the Wash button. After the last item, the sequence will
return to the first item.
To save and exit the operator menu at any time, open the machine door and then close it.
9.3 Extended wash time
Top display shows “00”
Press the Menu button to edit settings
Bottom display shows current extended wash setting (in minutes): (default = 4)
Extended Wash setting can be set from 3 minutes to 6 minutes total wash time in 1-minute intervals.
→ 00 → 01 → 02 → … → 13 →
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To increase time, press the Menu button
To decrease time, press the Delime button
To save and exit the edit mode, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu)
9.4 Cycle count
Top display shows “01”
Press the Menu button to display the cycle count
Bottom display shows first 3 digits of the 6-digit cycle count number (ex. 012345)
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Press the Menu button a 2
nd
time
Bottom display shows last 3 digits of the 6-digit cycle count number (ex. 012345)
To exit the cycle count menu, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu)
9.5 Detergent dispensing (CDL and CDH with internal chemical pumps)
9.5.1 Setting detergent dispensing amount
Top display shows “02”
Bottom display shows current detergent dispensing settings in g/L: (default = 2.0 g/L)
Note: 1.0 g/L ≈ 0.1 % concentration (by vol.) depending on detergent type.
Detergent dispensing amount can be set from 0.0 g/L to 20.0 g/L in 0.5 g/L increments.
To increase dosage by 0.5 g/L, press the Menu button
To decrease dosage by 0.5 g/L, press the Delime button
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To save and exit, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu)
9.5.2 Priming detergent dispensing pump
Top display shows “03”
Bottom display shows “0”
Press the Menu button to change bottom display value to “1”
Press delime button to begin detergent dispensing pump priming
The detergent dispensing pump will activate for 60 seconds
The decimal point in the bottom display will flash while the dispensing pump is on
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Verify the detergent is moving from the detergent bottle or
container to the machine through the tubing and that there
are no air bubbles in the tubing.
When the ball in the detergent float sight has moved
above the “EMPTY” line, the detergent has been fully
primed and is ready.
Note: The priming process might need to be repeated at least 2 times to fully prime the machine.
To exit the priming menu, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu and stop priming)
9.5.3 Inspecting detergent supply
Verify that the ball in the detergent float sight is above the
“EMPTY” line.
If the ball is below the “EMPTY” line, inspect the
detergent container for chemical present.
Prime the detergent line if needed (refer to 9.5.2).
Verify that the supply tube is correctly inserted with the suction filter at the bottom
of the container.
If air bubbles (large gaps) are present in detergent line – prime (refer to 9.5.2)
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9.5.4 Detergent supply level sensor (Optional)
Inspect detergent container for chemical present.
Make sure the bottle level sensor is correctly inserted into container
with float sensor at bottom of container.
If air bubbles (large gaps) are present in detergent line – prime
(refer to 9.5.2)
9.6 Rinse agent dispensing (CDL and CDH with chemical internal pumps)
9.6.1 Setting rinse agent dispensing amount
Top display shows “04”
Bottom display shows current rinse aid dispensing settings in g/L: (default = 0.6 g/L)
Note: 0.1 g/L ≈ 0.33 mL/cycle
Rinse aid dispensing amount can be set from 0.0 g/L to 2.0 g/L in 0.1 g/L increments.
To increase dosage by 0.1 g/L, press the Menu button
To decrease dosage by 0.1 g/L, press the Delime button
To save and exit, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu)
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9.6.2 Priming rinse agent dispensing pump
Top display shows “05”
Bottom display shows “0”
Press the Menu button to change bottom display value to “1”
Press delime button to begin rinse aid dispensing pump priming
The rinse aid dispensing pump will activate for 120 seconds
The decimal point in the bottom display will flash
while the dispensing pump is on
Verify the rinse aid is moving from the rinse aid bottle or
container to the machine through the tubing and that there
are no air bubbles in the tubing.
When the ball in the rinse aid float sight has moved
above the “EMPTY” line, the rinse aid has been fully
primed and is ready.
Note: The priming process might need to be repeated at least 2 times to fully prime the machine.
To exit the priming menu, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu and stop priming)
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9.6.3 Inspecting rinse aid supply
Verify that the ball in the rinse aid float sight is above the
“EMPTY” line.
If the ball is below the “EMPTY” line, inspect the rinse
aid container for chemical present
Prime the rinse aid line if needed (refer to 9.6.2).
Verify that the supply tube is correctly inserted with the suction filter at the bottom
of the container.
If air bubbles (large gaps) are present in rinse aid line – prime (refer to 9.6.2)
9.6.4 Rinse aid supply level sensor (Optional)
Inspect rinse aid container for chemical present.
Make sure the bottle level sensor is correctly inserted into container
with float sensor at bottom of container.
If air bubbles (large gaps) are present in rinse aid line – prime (refer
to 9.6.2)
9.7 Sanitizer dispensing (CDL machine only)
9.7.1 Setting sanitizer dispensing amount
Top display shows “06”
Bottom display shows current sanitizer dispensing setting in % concentration: (default = 50%)
Sanitizer concentration dispensing amount can be set from 20% to 100% in 10% increments.
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Sanitizer Dosing Setting
%
Concentration
Sodium Hypochlorite Solution (Bleach)
5.25%
6.40%
8.40%
Sanitizer Concentration PPM
20
15
18
24
30
22
27
36
40
30
37
48
50
37
46
60
60
45
55
72
70
52
64
84
80
60
73
96
90
67
82
108
100
75
91
120
To increase dosage, press the Menu button
To decrease dosage, press the Delime button
To save and exit, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu)
9.7.2 Priming sanitizer dispensing pump
WARNING!
Chemical mixing
Deliming solution must not come in contact with bleach. Mixing may cause hazardous
gas to form. Do not prime sanitizer pump while in the delime process.
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Top display shows “07”
Bottom display shows “0”
Press the Menu button to change bottom display value to “1”
Press delime button to begin sanitizer dispensing pump priming
The sanitizer dispensing pump will activate for 140 seconds
The decimal point in the bottom display will flash
while the dispensing pump is on
Verify the sanitizer is moving from the sanitizer bottle or
container to the machine through the tubing and that there
are no air bubbles in the tubing.
When the ball in the sanitizer float sight has moved
above the “EMPTY” line, the sanitizer has been fully
primed and is ready.
Note: The priming process might need to be repeated at
least 2 times to fully prime the machine.
To exit the priming menu, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu and stop priming)
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9.7.3 Inspecting sanitizer supply
Verify that the ball in the sanitizer float sight is above the
“EMPTY” line.
If the ball is below the “EMPTY” line, inspect the
sanitizer container for chemical present.
Prime the sanitizer line if needed (refer to 9.7.2).
Verify that the supply tube is correctly inserted with the suction filter at the bottom
of the container.
If air bubbles (large gaps) are present in sanitizer line – prime (refer to 9.7.2)
9.7.4 Sanitizer supply level sensor (Optional)
Make sure the bottle level sensor is correctly inserted into bottle with
float sensor at bottom of container.
If air bubbles (large gaps) are present in the sanitizer line – prime
(refer to 9.7.2)
9.8 Temperature display units
Top display shows “08”
Bottom display shows current temperature units: (Default is “F”)
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Press the Menu button or the Delime button to change bottom display to “F” (°F) or “C” (°C)
To exit the temperature units display menu, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu)
9.9 Chemical Pump Controls (CDH Only)
Top display shows “09”
Bottom display shows current chemical pump control setting
Chemical pump control can be set to 0, 1, or 2.
Setting
Chemical Pump Control Configuration
0
Internal chemical dosing pumps and external chemical signals disabled
1
Control of internal chemical dosing pumps enabled
2
Control signals for external chemical supply enabled
To increase setting, press the Menu button
To decrease setting, press the Delime button
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To save and exit the chemical pumps control menu, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu)
9.10 Aux Channels
– Reserved for Internal Functions –
9.11 Aux Channels
– Reserved for Internal Functions –
9.12 Aux Channels
– Reserved for Internal Functions –
9.13 Software Version / Machine Program
Display shows the current control software version.
Top display shows major version
Bottom displays minor revision
Example: Software version 3.5
Press and hold the Menu button or the Delime button to display the machine program
Example: Machine program 4
Major Version
Minor Revision
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To exit the software version menu, either:
Press Start Button to move to next item
– Or –
Open and close door (Will also exit operator menu)
10 DISPLAY OF ERRORS AND INFORMATION
10.1 Error
“Err” appears in the top display.
The error code is shown in the bottom display (see table).
*If error code persists, contact Hobart Service 1-888-4HOBART
Error
code
Symptom
Possible Solution*
01
Booster Temperature
Temperature above upper limit
1. Press the power button to power off (Provide 20 min to cool off).
2. Restart as normal.
3. If error continues to display, possible high limit trip or heating
element malfunction – contact Hobart Service.
02
Booster Temperature
Temperature below lower limit
1. Press the power button to power off.
2. Restart as normal.
3. If error continues to display, possible high limit trip or heating
element malfunction – contact Hobart Service.
03
Rinse Assurance
Booster did not meet temperature or
water level requirements
1. When booster does not reach temperature or water level set
point, a long wash cycle of 10 to 20 minutes will trigger.
2. If error continues to display on next cycle, possible high limit trip or
heating element malfunction – contact Hobart Service.
05
Wash Tank Temperature
Temperature above upper limit
1. Press the power button to power off (Provide 20 min to cool off).
2. Restart as normal.
3. If error continues to display, possible high limit trip or heating
element malfunction – contact Hobart Service.
06
Wash Tank Temperature
Temperature below lower limit
1. Press the power button to power off.
2. Restart as normal.
3. If error continues to display, possible high limit trip or heating
element malfunction – contact Hobart Service.
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Error
code
Symptom
Possible Solution*
07
Booster Pressure Level Sensor
Voltage above upper limit
1. Press the power button off then on to start the draining process.
2. Drain tank and refill (should reset the pressure level sensors).
3. If error continues to display – contact Hobart Service.
08
Booster Pressure Level Sensor
Voltage below lower limit
09
Wash Tank Pressure Level Sensor
Voltage above upper limit
10
Wash Tank Pressure Level Sensor
Voltage below lower limit
12
Drain Overflow Limit
Wash tank water level exceeded limit
1. Verify drain hose is not pinched or kinked.
2. Verify pump strainer is not clogged.
3. If error continues to display, possible drain pump malfunction –
contact Hobart Service.
13
Wash Tank Fill Time Exceeded
1. Cycle power button off and then on to continue filling.
2. Check wash and rinse arms for clogged nozzles.
3. If error continues to display – contact Hobart Service.
14
Drain Error – Shutdown
Machine took too long to drain
1. Verify drain hose is not pinched, kinked or incorrect drain
connection to building drain.
2. Check drain hose for any debris and drain again.
3. If error continue to display – contact Hobart Service.
18
Fill Error – Booster
Booster took too long to fill
1. Verify supply hose is not pinched or kinked.
2. Check that water is being supplied to machine.
3. Error will clear once water fills booster to setpoint within set time.
4. If error continues to display, possible fill valve malfunction –
contact Hobart Service.
19
Chemical Deficiency
Detergent / Rinse Aid / Sanitizer
1. Low or no chemicals.
2. Float level on bottle level sensor below working condition.
3. If no bottle level sensor present, jumpers are missing from
chemical level sensor connectors.
do
or
Program Interrupted
Fill, wash, or delime cycle
1. Machine is in fill, wash or delime cycle.
2. Verify door is closed.
3. If cycle running, then there is a display updating delay.
22
Low Rinse Temperature
1. Rinse temperature below setpoint on 3 consecutive cycles.
2. Error will clear if rinse temperature meets or exceeds setpoint.
3. If error continues to display – contact Hobart Service
24
USB Drive Not Detected
1. USB not properly configured or incorrect directory path.
2. Contact Hobart Service.
25
Communication Error
1. Internal communication error
2. Contact Hobart Service.
FIL
Low Water Level at
Start of Wash Cycle
1. Check if item(s) from previous wash cycle removed large amount
of water from dishwasher.
2. Check orientation of ware to ensure water is not collected.
3. Will automatically correct after starting of the next cycle.
4. Wash tank will fill to proper level and heat to temperature and
then wash cycle will resume.
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Error
code
Symptom
Possible Solution*
30
Booster Heat Up Time
Exceeded at Startup
1. Press the power button to power off and drain tank.
2. Restart as normal.
3. If error continue to display, unplug the machine from the wall. If
unit is hardwired, turn circuit breaker off then back on.
4. If error continues to display, possible tripped high limit or heating
element malfunction – contact Hobart Service.
31
Fill Error
1. System exceeded maximum fill time.
2. Press the power button to power off machine.
3. Verify supply hose is not pinched or kinked.
4. Check that water is being supplied to machine.
5. Restart as normal.
6. If error continues to display, possible fill valve malfunction –
contact Hobart Service.
10.2 Information
The following notes are displayed with a combination of letters in the display in the display.
Display
Reason
Remedy
do
or
Filling, washing draining or delime program
interrupted
Close door
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11 TROUBLESHOOTING GUIDE
11.1 Poor wash results
Fault Type
Possible Cause
Remedy
Ware not
clean
Wash arm hard to turn
(must rotate easily by hand).
• Remove wash arms and clean them
thoroughly.
• Also check that water manifold from
machine to wash arm is clear.
Wash arm nozzles are clogged
(visual check).
• Remove wash arm and rinse wash arm
thoroughly until all soiling is removed.
Rinse nozzles clogged
(usually by lime deposit).
• Remove rinse arms and delime them in
separate container.
• Check building softening system for
function.
• Delime machine if needed.
Detergent concentration is too low or too high.
Check detergent concentration setting (See
operating instructions.
Tank strainers clogged.
Remove strainer pan(s), empty and clean
strainer(s).
Pump strainer clogged.
Remove, empty and clean strainer.
Wrong program selected for heavily soiled
wash ware.
Extend the wash program for longer wash cycle.
Ware or
glasses dry
poorly
Rinse aid concentration too low.
Increase concentration
(see operating instructions)
Wash ware still greasy.
Detergent concentration too low: increase
(see operation instructions).
Check if detergent is appropriate. If not,
choose a stronger one.
Drain contaminated water and refill
machine. Ensure better pre-scrapping of the
wash ware.
Wash ware left in machine too long after the
end of wash cycle.
Remove wash ware as soon as cycle is
completed when ware is at its highest
temperature to enable better drying.
Streaks and
spots on
ware or
glasses
Rinse aid concentration too high
(stripe or bubble formation)
Reduce rinse aid concentration
(see operating instructions)
Hard water or high mineral content.
Check water quality.
Improper rinse aid
Consult your local chemical provider
Inadequate rinse aid dispensing causes stains.
Increase rinse aid concentration
(see operating instructions)
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11.2 Other faults
Fault Type
Possible Causes
Remedy
Glasses are totally or
partially cloudy.
Surface of glasses is rough and
porous; this is called glass etching.
Use new glasses, this is not caused by a
malfunction on the machine.
Glass/dish breakage.
Use of unsuitable dish or glass racks.
Use suitable racks.
12 MAINTENANCE
Genuine spare parts must be used for repairs and maintenance part replacements. Maintenance parts
include chemical dispensing tubes, rinse arm bearings, etc.
Contact your Hobart Service office for any repairs or adjustments needed on this equipment. Long-term
service contracts are available on this and other Hobart products.
13 DISPOSAL
The machine operator is responsible for disposing of the machine and its operating materials correctly
and in accordance with environmental regulations. Observe the national and local regulations.
14 PRODUCT DISCLAIMER
Installations and repairs carried out by non-authorized technicians or using non-genuine spare parts,
and any technical alterations to the machine not approved by the manufacturer will invalidate the
manufacturer's warranty.
HOBART reserves the right to make changes or improvements to its products without prior notice.
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15 NOTES
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