Hobart ML-138213, ML-138211, ML-138212, ML-138214, ML-138226 User Manual

CLe-series  Dishwashers

Blower-dryer

LAVE-VAISSELLE DE LA GAMME CLe	E
TUNNEL DE SÉCHAGE

LAVAVAJILLAS SERIE-CLe

SECADOR DE AIRE

Electric (CLe Series)	ML-138211
Électrique (gamme CLe)	ML-138212
SISTEMA ELÉCTRICO	ML-138213
(SERIE CLe)	ML-138214
ELECTRIC (CLeR SERIES)	ML-138325
Électrique (gamme CLeR)	ML-138326
SISTEMA ELÉCTRICO	ML-138327
(SERIE CLeR)	ML-138328
steam (CLe SERIES)	ML-138226
Vapeur (gamme CLe)	ML-138227
SISTEMA A VAPOR	ML-138228
(SERIE CLe)	ML-138229
steam (CLeR SERIES)	ML-138333
Vapeur (gamme CLeR)	ML-138334
SISTEMA A VAPOR	ML-138335
	ML-138336

	701 S. RIDGE AVENUE
	TROY, OHIO 45374-0001
	937 332-3000	F44181 Rev. E (June 2013)
	www.hobartcorp.com

Table of Contents

GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

INSTALLATION. .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		. 3
Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		.	3
CLeR Models.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .			3
Drill Holes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		.	4

Mount Blower-Dryer to Dishwasher.. . . . . . . . . . . . . . . . . . . . . . . 6

Install Template/Stiffener.. . . . . . . . . . . . . . . . . . . . . . . . . .					.	7
Mount Adjustable Legs . . . . . . . . . . . . . . . . . . . . . . . . . . .					.	7
Adjust Blower-Dryer Feet for Firm Mounting. . . . . . . . . . . . . . . . . . .					.	7
Adjust Air Deflector. . . . . . . . . . . . . . . . . . . . . . . . . . . . .						. 7
Install Connecting Rods. .			. . . . . . . . . . . . . . . . . . . . . . . . .			7
Track Adjustment . . . . . . .			. . . . . . . . . . . . . . . . . . . . . . .			8
Dish Table Assembly.. . . . . . . . . . . . . . . . . . . . . . . . . . . .						8
Mount Blower Motor. . . . .			. . . . . . . . . . . . . . . . . . . . . . . .			9
Blower Motor Connections. . . . . . . . . . . . . . . . . . . . . . . . . 10
Electrical Connections. .			. . . . . . . . . . . . . . . . . . . . . . . . . .			10
		Control Connections.. . . . . . . . . . . . . . . . . . . . . . . . . .				10
		Power Connections . . . . . . . . . . . . . . . . . . . . . . . . . . .				11
		Blower Motor Rotation. . . . . . . . . . . . . . . . . . . . . . . . . .				12
Steam Connection (When Blower-Dryer is Equipped with Steam Heat). .				. . . . . . .		12
		Condensate Return Piping. . . . . . . . . . . . . . . . . . . . . . . .			. 14
Panel Assembly.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .						16
Drain Connection.. . . . . . . . . . . . . . . . . . . . . . . . . . . . .						16
Exhaust Connection. . . . .			. . . . . . . . . . . . . . . . . . . . . . .			17
		Adjusting the Vents on the Blower-Dryer and Dishwasher (hood or open canopy). . .				18

OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Removing the Deflector Tray.. . . . . . . . . . . . . . . . . . . . . . . . . 20 Dos and Don'ts for Your New Hobart Warewasher. . . . . . . . . . . . . . . . . 20

©  Hobart 2009

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Installation, Operation and Care Of

CLe and CLeR-SERIES  BLOWER-DRYER

SAVE THESE INSTRUCTIONS

GENERAL

The CLe and CLeR series Blower-Dryer unit is designed to assist the drying of dishware by drawing room air through a heated plenum into the unloading end of the dishwasher. The unit is powered by a 2 HP electric motor and is available with three-phase electric service only.

A condensation tight, forced exhaust system to the outside is necessary for removal of humid drying air. This exhaust system is to be supplied by the customer. Refer to Exhaust Connections for recommended exhaust requirements.

INSTALLATION

Unpacking

Immediately after unpacking the blower-dryer, check for possible shipping damage. If the machine is found to be damaged, save the packaging material and contact the carrier within 15 days of delivery.

Prior to installation, verify that the electrical service agrees with the specifications on the machine data plate, which is located on the rear of the unit.

Afterunpackingtheblower-dryer,removetheitemsthatwereshippedloose(hardware, blower motor, legs) from inside the unit. Remove shipping braces and discard.

Installation Codes

Installation must be in accordance with state and local codes, or in the absence of local codes, with the National Electrical Code ANSI / NFPA 70 (latest edition). In Canada, the installation standard is: CSA C22.2 No. 1 (latest edition).

cler models only

Remove the side panels from the energy recovery hood assembly as shown in Fig. 1A. The side panels may be discarded; however, do not discard the hardware as it will be reused.

Install new chamber flanges to energy recovery hood assembly as shown in Fig.

1A using hardware removed in previous step.

Position the CleR blower dryer template (F-38373, Fig 2A) by aligning the front and top edges of the template with the front and top edges of the energy recovery hood as shown in Fig. 1A. Mark hole locations and drill necessary holes per template. Hole diameters are shown in Fig. 2A.

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Drill holes

Position the hole template/stiffener (Fig. 2) over the existing bolt heads on the unload end of the dishwasher per directions on template. Mark hole locations and drill necessary holes per template. Hole diameters shown in Fig. 2.

HOLE

TEMPLATE / STIFFENER

CLe-Series

Fig. 1

For CLeR machines only, position the CLeR blower-dryer template (Fig. 2A) on the CLeR hood assembly. Mark hole locations and drill necessary holes per template. See Fig. 1A.

CLeR-Series

Fig. 1A

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PLC 2 DIA, HOLE 1/4"-1 FOR PUNCH CENTER	PLC 7 DIA, HOLE 5/16" FOR PUNCH CENTER	STIFFENER E EMPL HOLEAT T	PLC 6 DIA, HOLE 5/16" FOR PUNCH CENTER	EMPL DRYERAT T- BLOWER CLeR
				E

Fig. 2	Fig. 2A
CLe and CLeR	CLeR Only

– 5 –

Mount blower-dryer to dishwasher

NOTE: The dishwasher must be in its final position, adjusted for proper height and properly leveled before blower-dryer can be mounted.

To mount the blower-dryer, apply the 11⁄2" foam sealant tape (supplied) along the edges of the dishwasher to prevent leakage (CLe models, see Fig. 3. CLeR models, see Fig. 3A). Also apply the 5” foam sealant tape (supplied) below the tank lip on the dishwasher (Fig. 3 and 3A). On CLeR models, insert two ¼-20 bolts into the weld nuts on the end of the blower dryer chamber (Fig. 3A). These will be used as locating studs. Position the blower-dryer against the dishwasher and assemble using the ¼-20 bolts and nuts provided (Fig. 3 & 3A). Do not tighten at this time.

1/4-20 x (12)

CLe-Series

Fig. 3

CLeR-Series

Fig. 3A

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Install template/stiffener

Remove knockouts from template/stiffener. Align the holes and attach the template/ stiffener to inside bottom of blower-dryer with 1/4-20 bolts and nuts provided. Assemble remaining bolts and nuts through chamber. Tighten all bolts and nuts.

ASSEMBLE

TEMPLATE/STIFFENER TO INSIDE LOAD END OF BLOWER-DRYER (SEE FIG. 2)

RACK GUIDE

Fig. 4

Mount Adjustable Legs

Mount the adjustable legs (Fig. 3) to the last set of studs in the base of the blowerdryer using the 5/16" nuts and lock washers already attached.

Adjust blower-dryer feet for firm mounting

Turn the adjustable feet inward or outward, as necessary, until blower-dryer is firmly mounted.

adjust air deflector

Raise the air deflector tight against the chamber and secure in place by tightening the 5/16" bolt. See Fig. 5.

INSTALL CONNECTING RODS

Preassemble (1) elastic nut on each side of both rods, approximately 1.00" onto the threads (Fig. 5). Route the connecting rods through the tank end. Assemble the rods through the cross members of both cradles and add the second elastic nut. Do not completely tighten the elastic nuts. A small gap of 0.15"- 0.020" will allow better cradle alignment. Assure spacing between the last dog on the parent machine and the first dog on the blower dryer is equal distance in the front and rear of conveyor.

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ASSEMBLE ELASTIC STOP NUTS AT END OF RODS FOR CORRECT ADJUSTM DO NOT OVERTIGHTEN NUTS.

THIS MAY CAUSE CONVEYOR TO BIND 0.15 - 0.020" GAP IS PREFERRED.

(4 PLACES)

APPROX. 1.0

TANK END

TRACK ROD

Fig. 5

TRACK ADJUSTMENT

Place a rack on the track in the center of the Blower-Dryer unit. Verify that there is less than 0.25" total gap between the rack and the track. Adjust track rod as needed.

DISH TABLE Assembly

Dishtablesshouldbefittedintotheblower-dryer(Figs.6,7&8).Usesiliconesealant between table and lip of tank to prevent leakage. Rack track height should be from 1/4 to 5/16" (Fig. 7) above the tank lip. Dish tables should be sloped so that any water carried from the dishwasher will drain back into the machine.

NOTE: The blower-dryer must be in its final position, adjusted for proper height and properly leveled before table assembly and plumbing connections are made.

Fig. 6

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Fig. 7

Fig. 8

Mount blower motor

Take care when installing the blower motor to avoid damaging wiring and electrical components.

Remove front and rear panels as necessary. The top and side panel unit can be loosened on the exit side to ease installation. However, do not remove the top and side panel unit. Take care to avoid damaging the wiring and electrical components mounted on the side panel.

Apply 1" foam sealant tape (supplied) along the edges of the blower motor to prevent leakage. Carefully position the blower motor over the opening in the blowerdryer chamber top and bolt in place using 1/4-20 hardware provided.

ELECTRONIC

OVERLOAD RELAY

3-PHASE MOTOR CONNECTIONS

GROUND	LEVER TYPE WIRE
CONNECTION	CONNECTORS

Fig. 9

– 9 –

Mount the protective mylar cover to the plenum on top of the blower flange using blower hardware provided.

PROTECTIVE COVER

BLOWER HARDWARE

Fig. 10

Blower Motor Connections

Carefully route the blower motor cable through the p-clip, located at the center front of the component baseplate, to the electronic overload relay. Connect the threephase wiring and ground pigtail leads from the overload relay to the blower motor cable connections using the wire connectors. Refer to the blower motor connection chart located on the blower motor for additional information (208/480 VAC only).

Make certain the blower motor cable and connections are securely routed away from the motor fan blades to avoid damage to the connections.

electrical connections

Before making electrical connections, check the machine specifications to ensure that they agree with those of your electrical service.

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 dishwasher and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

Control Connections

Carefully route the control cable to the control box on top of the dishwasher. Insert the cable into the back of the control box through the strain relief (provided) and collect extra cable inside control box. Use wire ties (provided) to secure cable between the blower-dryer and dishwasher control box.

Make certain the control cable is securely routed along the top of the dishwasher unit to avoid damage.

Connect the three control cable leads to the same-named terminal block connections as shown in Fig. 11. Refer to the electrical diagram located inside the control box cover for additional information.

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Fig. 11

Power Connections

Remove two screws securing the component baseplate and slide the baseplate forward to gain access to field wiring terminal block. Route the field wiring leads through hole in the side of the blower-dryer unit using appropriate conduit and fittings. Allow extra length in leads for proper connections.

Connect the leads to the terminal block located at the back of the blower-dryer unit. Connect the ground wire to the ground terminal located beside the main terminal block. Refer to the table below for proper connection information. Slide component baseplate back in position and secure with two bolts.

branch circuit size and protection

	Electric					Steam
Electrical	Rated	Min. Supply	Max.		Electrical	Rated	Min. Supply	Max.
Specs.	Amps	Circuit	Protective		Specs.	Amps	Circuit	Protective
		Conductor	Device Amps				Conductor	Device Amps
		Ampacity					Ampacity
208/60/3	34.2	45	45		208/60/3	4.5	15	15
240/60/3	30.7	40	40		240/60/3	4.5	15	15
380/60/3	17.8	25	25		380/60/3	2.6	15	15
480/60/3	15.7	20	20		480/60/3	2.6	15	15
600/60/3	12.6	20	20		600/60/3	2.1	15	15
200/50/3	33.0	45	45		200-240/50/3	4.5	15	15
380-415/50/3	17.8	25	25		380-415/50/3	2.6	15	15

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Blower Motor Rotation

Before placing the blower-dryer into service, check to verify that the blower motor rotates in the correct direction (arrow in blower housing indicates correct rotation). Incorrect rotation will result in unacceptable performance.

To check the blower motor's rotation:

Turn the power disconnect switch ON and momentarily activate the blower-dryer. The main dishwasher must be operating during this procedure.

Be careful not to touch any uninsulated electrical parts that are exposed. If the blower motor does not rotate in the proper direction, disconnect the electrical power supply to the machine.

Disconnect the electrical power to the machine and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

Reverse any two of the blower motor cable leads at the overload relay using the lever-type wire connectors. Reconnect the electrical power supply to the machine. Re-check the blower motor's rotation.

STEAM Connection (when Blower-Dryer is Equipped with Steam Heat)

Steam supply pressure must agree with the steam trap (supplied) which is rated for 10 to 50 psig differential pressure. If flowing pressure exceeds 50 psig, a pressure regulator (customer supplied) must be installed in the supply line. Steam flow is controlled by a solenoid valve. Two connections are required, one for the steam supply and one for the condensate return.

The example shown depicts Right to Left direction. Left to Right will have plumbing mirrored.

To install the steam connections:

With rear panel removed, install the elbow (shipped loose) to steam inlet line on the blower dryer (pipe sealant required).

STEAM INLET LINE

Fig. 12

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Locate inlet piping assembly 814498 and separate at union. Connect to the elbow as shown in Figure 13 (pipe sealant required).

INLET PIPING ASSEMBLY (814498)

Fig. 13

Partially install support bracket to the chamber with bolt and nut as shown below.

SUPPORT BRACKET

Fig. 14

Install remaining portion of inlet piping assembly as shown in Figure 15.

INLET PIPING ASSEMBLY

Fig. 15

– 13 –

Bring support bracket into position to support the inlet piping and install 2nd bolt on chamber.

2nd SUPPORT BRACKET BOLT

Fig. 16

Disconnect the electrical power to the dishwasher and follow lockout / tagout procedures. There may be multiple circuits. Be sure all circuits are disconnected.

Remove the cover on the steam solenoid valve enclosure and remove knock-out closest to where the cord will be routed. Install the strain-relief fitting in the valve enclosure and connect the lead wires to the appropriate terminals. Install the valve cover.

Condensate Return Piping

Install the top half of the support bracket to the bottom of the blower dryer as shown in Figure 17.

SUPPORT BRACKET

Fig. 17

– 14 –

Locate condensate return piping assembly (814499) and break at the union. Install the elbow on the outlet of the blower dryer heat exchanger as shown below.

CONDENSATE RETURN

PIPING ASSEMBLY (814499)

Fig. 18

Connect the remaining piping to the union as shown in Figure 19.

REMAINING PIPE

Fig. 19

Install the steam trap and remaining piece of lower support bracket as shown below.

STEAM TRAP

LOWER BRACKET

Fig. 20

Fig. 21

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panel assembly

Position front and rear panels and bolt in place with 1/4-20 truss head bolts provided.

REAR PANEL

FRONT PANEL

Fig. 22

Drain Connection

Plumbing connections must comply with applicable sanitary, safety and plumbing codes.

Plumbing equipment for drain is not supplied.

Connect the 1" drain connection under the blower-dryer to a suitable drain (Fig. 23). The drain for the blower-dryer requires only one connection to the drain. On CLe models only, the drain can be connected to the end of the common drain pipe (Fig.

24) for the dishwasher unit or it can be independently connected to the floor drain.

To connect to the dishwasher unit, remove the pipe plug from the common drain pipe and connect the blower-dryer drain using appropriate fittings (not supplied).

DRAIN CONNECTION

AT EITHER END

Fig. 23						Fig. 24

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Exhaust Connection

Moist air escapes from each end of the conveyor type dishwasher. The recommended exhaustrequirementis200CFM(CLeandCLeR)attheentranceendofthedishwasher and 400 CFM (CLe) / 175 CFM (CLeR) at the discharge end. Sufficient make-up air must be provided so the exhaust flow results in a positive building pressure in the room in which the unit is located (more outside air than exhaust air). Hoods are provided with 4" x 16" vent connectors with vent dampers which allow adjustment during installation. Typical construction is for 'Pant-Leg' hood connections to the

4" x 16" vent connectors (Fig. 25 and 25A). Vent stacks must be watertight and fit inside the vent connector openings.

		4" X 16"
		VENT	EXIT
	PANT-LEG DUCT	CONNECTOR
			VENT STACK
			DAMPER

		INTERNAL VENT
	ENTRANCE	SHOULD REMAIN
		OPEN UNLESS
	VENT STACK
		AIRFLOW ADJUSTMENT
	DAMPER
		IS NECESSARY

DEFLECTOR PAN

CLe-Series

Fig. 25

– 17 –

	4" X 16"	EXIT
	VENT	VENT STACK
PANT-LEG DUCT	CONNECTOR	DAMPER

	ENTRANCE	INTERNAL VENT
		SHOULD REMAIN
	VENT STACK
		OPEN UNLESS
	DAMPER
		AIRFLOW ADJUSTMENT
		IS NECESSARY

DEFLECTOR PAN

CLeR-Series

Fig. 25A

Deflector Pan

On CLe machines only, assemble deflector pan over drain conection nuts. Pan is removable for cleaning.

On CLeR machines, assemble deflector pan over two studs located closest to unload section of blower-dryer.

Adjusting the Vents on the Blower-Dryer and Dishwasher (hood or open canopy)

CLe-Series

To maintain good wash tank temperature, it is critical to adjust the vents to reduce air flow movement caused by the dryer fan. The first step is to adjust dishwasher vent system per Exhaust Spec. To help maintain tank heat, adjust the entrance and exit dampers so the draw stops vapor from escaping into room. Excess draw can pull tank heat from the entrance or exit of machine. Next, set the blower dryer vent angle (located at the exit end of the blower dryer). Without removing any panels, the damper can be adjusted by reaching into the chamber and rotating damper. Adjust the damper to approximately 60 degrees. Next, let the dishwasher reach minimal temperature, then turn the dishwasher ON and observe both the entrance and discharge of the dishwasher. The curtains should be hanging nearly straight down. If the discharge curtain is moving excessively make the following changes:

CLeR-Series

For CLeR-Series vent adjustments, refer to the CLe-Series dishwashers Instructions Manual (F-44127, Rev. C, November 2012).

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