HWH 725 Series Operator's Manual
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HWH 725 Series Operator's Manual

Computer-controlled leveling system
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Download this manual See also: Service Manual, Operator's Manual
OPERATOR'S MANUAL
HWH COMPUTER-CONTROLLED
725 SERIES LEVELING SYSTEM
UNDERSTAND OPERATOR'S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
Ph: 800/321-3494 (or) 563/724-3396 | Fax: 563/724-3408
AP47666
H H
W
CORPORATION
R
FEATURING:
Touch Panel Leveling Control
BI-AXIS Hydraulic Leveling
R
Kick-Down Jacks
HWH COMPUTERIZED LEVELING
EXCESS
ON
SLOPE
AUTO
NOT IN
PARK/
STORE
BRAKE
TRAVEL
MODE
OFF
WARNING
SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
HWH CORPORATION
(On I-80, Exit 267 South)
2096 Moscow Road | Moscow, Iowa 52760
www.hwh.com
R
ML47732/MP04.3375
16NOV10

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Summary of Contents for HWH 725 Series

  • Page 1 CORPORATION OPERATOR’S MANUAL HWH COMPUTER-CONTROLLED 725 SERIES LEVELING SYSTEM FEATURING: Touch Panel Leveling Control BI-AXIS Hydraulic Leveling Kick-Down Jacks HWH COMPUTERIZED LEVELING EXCESS SLOPE AUTO NOT IN PARK/ STORE BRAKE TRAVEL MODE WARNING UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.

  • Page 2: How To Obtain Warranty Service

    HWH CORPORATION personnel will contact you to the problem quickly. If the dealer has difficulty solving determine whether or not your claim is valid. If it is, HWH the problem, he should immediately contact the Customer CORPORATION will authorize repair or replacement of the Service Department, at HWH CORPORATION.

  • Page 3: Control Identification

    CONTROL IDENTIFICATION RAISE LEFT SIDE Manual Button LOWER FRONT Manual Button RAISE FRONT Manual Button "EXCESS SLOPE" HWH COMPUTERIZED LEVELING JACK DOWN Indicator light Indicator lights (4) red "ON/AUTO" LEVEL EXCESS Indicator light SLOPE RAISE RIGHT SIDE AUTO "ON/AUTO" (I) Button...

  • Page 4: Cold Weather Operations

    For cold weather information see "COLD WEATHER OPERATIONS" below. The HWH systems with a computer processor monitor the pump run time and will turn the pump off if the run time exceeds a specified time. This time can vary with different systems. Due to available electronics or system design, the pump run time programs will also vary.

  • Page 5: Operating Procedures

    OPERATING PROCEDURES GENERAL INSTRUCTIONS Maintain adequate clearance in all directions for vehicle, room If the hand / auto brake is not set when the "ON/AUTO" (I) extensions, awnings, doors, steps, etc. Vehicle may move in button is pressed, the "NOT IN PARK/BRAKE" light will any direction due to jacks extending or retracting, settling of come on.
  • Page 6 OPERATING PROCEDURES 625\725 SERIES LEVELING SYSTEM AUTOMATIC HYDRAULIC LEVELING 1. Place transmission in the recommended position for The system will automatically extend the jacks to level the parking vehicle and set parking brake. Turn the coach vehicle and then extend any remaining jacks for stabilizing.
  • Page 7 OPERATING PROCEDURES MANUAL HYDRAULIC OPERATION 1. Place transmission in the recommended position for parking Jacks will extend (or retract) in pairs to raise (or lower) a side the vehicle, and set the parking brake. Turn the ignition to the or end of the vehicle. Any jack not used for leveling can be "ACCESSORY"...

  • Page 8: Maintenance

    The oil level should be checked when the vehicle is first FLUID: HWH Specialty Hydraulic Oil is recommended. In an purchased and then once every two years. More often if emergency Dexron automatic transmission fluid can be used.

  • Page 9: System Adjustment

    CANNOT ROLL FORWARD OR BACKWARD. consult a qualified RV repair center, your vehicle or coach manufacturer, or HWH CORPORATION for Set the park/brake. Switch the ignition to the "ACC" or "ON" service or repair.
  • Page 10 INSTRUCTION SHEET SENSING UNIT MAINTENANCE/SERVICE REMOTE MOUNTED "POTTED" ELECTRONIC SENSING UNIT SENSING UNIT ACCURACY TOLERANCE The sensing unit has an accuracy tolerance of ± 5.4 inches front to rear and ± 1 inch side to side on a 36 foot vehicle. Typical leveling results will be better. SENSING UNIT ADJUSTMENT / WITH ADJUSTING ENHANCEMENT Level the vehicle by placing a bubble level in the center of the Move the vehicle to an unlevel position and level the...
  • Page 11 HYDRAULIC LINE CONNECTION DIAGRAM 725 SERIES LEVELING SYSTEM (WITH 4 KICK-DOWN JACKS) NOTE: BEFORE OPERATING VALVE RELEASE NUTS, READ AND UNDERSTAND PROCEDURE FOR MANUAL JACK RETRACTION IN OPERATOR’S INSTRUCTIONS. LEFT FRONT RIGHT FRONT VALVE BREATHER RELEASE NUTS SHUTTLE VALVE NOTE: SOME...
  • Page 12 HYDRAULIC SCHEMATIC BI-AXIS LEVELING WITH KICK-DOWN JACKS *50 PSI SWITCH MAY NOT BE RELIEF VALVE USED ON ALL 625 MANIFOLDS HYDRAULIC SOLENOID MANIFOLD POWER UNIT ASSEMBLY RETURN PRESSURE 3000 PSI SWITCH *50 PSI SWITCH PRESSURE/RETURN SHUTTLE VALVE CHECK SOL.VALVE SOL.VALVE SOL.VALVE SOL.VALVE VALVE...
  • Page 13 ELECTRICAL CONNECTION DIAGRAM 725 SERIES SINGLE STEP LEVELING SYSTEM PARK BRAKE - MASTER WARNING LIGHT - TOUCH PANEL JACK WARNING LIGHTS AND PRESSURE SWITCHES PRESSURE PRESSURE SWITCH SWITCH WARNING WARNING SWITCH SWITCH 6235 2000 LEFT FRONT RIGHT FRONT 1000 6235...
  • Page 14 ELECTRICAL CONNECTION DIAGRAM MULTIPLEXED INPUT/OUTPUT MODULE LED AND WIRE/CONNECTION INFORMATION NOTE: DUMP AND TRAVEL LEDS PRESENT RIGHT REAR JACK BUT NOT ALWAYS USED RIGHT FRONT JACK LEFT FRONT JACK LEFT REAR JACK LINK LIGHT GROUND STUD PUMP RELAY DUMP TRAVEL MASTER RELAY A LIT RED LED INDICATES THERE SHOULD BE +12 VOLTS ON THE CORRESPONDING WIRE.
  • Page 15 RELAY (A) GROUND STUD IN MANIFOLD SHOWN HERE BENEATH THE TO GROUND STUD DEUTSCH CONNECTOR ON PUMP (6230) SEE ELECTRICAL CONNECTION DIAGRAM - 725 SERIES SINGLE STEP LEVELING LF RF SYSTEM FUSE 40 AMP NOTE: PILOT AIR DUMP CONNECTION NOT USED...
  • Page 16 ELECTRICAL CONNECTION DIAGRAM 725 SERIES LEVELING SYSTEM TOUCH PANEL CONNECTIONS HWH COMPUTERIZED LEVELING EXCESS SLOPE AUTO NOT IN PARK/ STORE BRAKE TRAVEL MODE WARNING UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
  • Page 17 ELECTRICAL CONNECTION DIAGRAM LEVEL SENSING UNIT SEE WIRE LEGEND 1 2 3 BELOW SEE ELECTRICAL CONNECTION DIAGRAM - 725 SERIES SINGLE STEP LEVELING SYSTEM YELLOW LEDS MOUNTING / ADJUSTMENT ELECTRICAL SCREWS (3) CONNECTION DIAGRAM MULTIPLEXED INPUT/ OUTPUT MODULE BOTTOM VIEW OF...
  • Page 18 Valve size and voltage are still factors to be valve. Pushing the cam in the considered when replacing any HWH hydraulic wrong direction could damage solenoid valve. Replace a small style 12 volt the valve.

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