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HWH 725 SERIES Operator's Manual

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OPERATOR'S MANUAL
HWH COMPUTER-CONTROLLED
725 SERIES LEVELING SYSTEM
Ph: 800/321-3494 (or) 563/724-3396 | Fax: 563/724-3408
AP46429
H H
W
CORPORATION
R
FEATURING:
Touch Panel Leveling Control
BI-AXIS Hydraulic Leveling
R
Straight-Acting Jacks
HWH COMPUTERIZED LEVELING
R
EXCESS
SLOPE
EXTEND
AUTO
LEVEL
NOT IN
PARK/
BRAKE
AUTO
STORE
RETRACT
TRAVEL
MODE
CANCEL
WARNING!
UNDERSTAND OPERATOR'S MANUAL BEFORE USING. BLOCK FRAME AND TIRES
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
EXTEND
MANUAL
RETRACT
ML46430/MP04.3370
08JUN10

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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 Straight-Acting Jacks HWH COMPUTERIZED LEVELING EXCESS SLOPE EXTEND EXTEND AUTO LEVEL NOT IN MANUAL PARK/ BRAKE AUTO STORE RETRACT RETRACT TRAVEL MODE CANCEL WARNING! UNDERSTAND OPERATOR’S MANUAL BEFORE USING.

  • 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 Functions

    CONTROL IDENTIFICATION 725 SERIES LEVELING SYSTEM COMPUTER-CONTROL "EXCESS SLOPE" LOWER FRONT Indicator light AUTO LEVEL Manual button Indicator light RAISE FRONT Manual button "AUTO LEVEL" Button HWH COMPUTERIZED LEVELING JACK DOWN "NOT IN PARK" Indicator light EXCESS Indicator light (4) red...

  • 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 "AUTO LEVEL" 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 "AUTO LEVEL", "AUTO STORE" or the is the manual leveling buttons will function anytime the "CANCEL" button on the HWH touch panel will stop ignition is in the ON or ACC. position and the park brake is the automatic leveling function.
  • Page 7 THERE ARE NO OBJECTS UNDER THE VEHICLE AND THAT pushing the "AUTO LEVEL", "AUTO STORE" or the ALL PEOPLE ARE CLEAR OF THE VEHICLE. "CANCEL" button on the HWH touch panel will stop the automatic store function. NOTE: When the jacks are stored with the ignition in...
  • Page 8 OPERATING PROCEDURES MANUAL HYDRAULIC OPERATION 1. Place transmission in the recommended position for parking Any jack not used for leveling can be extended to the the vehicle, and set the parking brake. Turn the ignition to the ground. This provides additional stability against wind and "ACCESSORY"...

  • Page 9: Maintenance

    Dexron automatic transmission fluid contains red dye and can cause staining should a leak occur. DO NOT USE All jacks and any HWH room extensions or steps should be brake fluid or hydraulic jack fluid. Use of these can damage completely retracted before checking the oil level.
  • Page 10 To help reduce the corrosion of jacks after exposure to anti- continue to absorb moisture from the air even after they icing / deicing agents, thoroughly wash jacks with warm have dried. This can facilitate corrosion of metallic soapy water. components, such as HWH jacks. MP44.0502 22NOV16...
  • Page 11 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 / WITHOUT ADJUSTING ENHANCEMENT NOTE: OBSOLETE SENSING UNIT USED PRIOR NOTE: If opposing LED’s are lit, there is a problem with...
  • Page 12 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 13 HYDRAULIC LINE CONNECTION DIAGRAM 625/725 SERIES LEVELING SYSTEM (WITH 4 STRAIGHT-ACTING JACKS) MANIFOLDS MAY HAVE FOUR (4) LARGE VALVES OR FOUR (4) SMALL VALVES NOTE: BEFORE OPERATING MANUAL VALVE RELEASE, READ AND UNDERSTAND PROCEDURE FOR MANUAL JACK RETRACTION IN OPERATOR’S INSTRUCTIONS. VALVES MAY BE EQUIPPED WITH VALVE RELEASE NUTS OR RELEASE CAMS.
  • Page 14 HYDRAULIC SCHEMATIC DIAGRAM BI-AXIS LEVELING WITH STRAIGHT-ACTING JACKS 625, 625S OR 725 SERIES NOTE: 50 PSI PRESSURE SWITCH RELIEF VALVE MAY NOT BE USED ON ALL 625 MANIFOLDS. 3500 P.S.I. HYDRAULIC ROOM EXTENSION POWER UNIT MANIFOLD LOCATED HERE WHEN APPLICABLE...
  • Page 15 ELECTRICAL CONNECTION DIAGRAM 725 SERIES SINGLE STEP LEVELING SYSTEM JACK WARNING SWITCHES, PRESSURE SWITCHES & PARK BRAKE PRESSURE PRESSURE SWITCH SWITCH WARNING WARNING SWITCH SWITCH 6235 2000 1000 6235 1200 2200 TOUCH PANEL SEE ELECTRICAL CONNECTION DIAGRAM LEVELING SYSTEM HYDRAULIC MANIFOLD...
  • Page 16 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 17 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 18 ELECTRICAL CONNECTION DIAGRAM 725 SERIES LEVELING SYSTEM TOUCH PANEL CONNECTIONS HWH COMPUTERIZED LEVELING EXCESS SLOPE EXTEND EXTEND AUTO LEVEL NOT IN MANUAL PARK/ BRAKE AUTO STORE RETRACT RETRACT TRAVEL MODE CANCEL WARNING! UNDERSTAND OPERATOR’S MANUAL BEFORE USING. BLOCK FRAME AND TIRES SECURELY BEFORE REMOVING TIRES OR CRAWLING UNDER VEHICLE.
  • Page 19 ELECTRICAL CONNECTION DIAGRAM LEVEL SENSING UNIT SEE WIRE LEGEND BELOW SEE WIRE LEGEND BELOW SEE ELECTRICAL CONNECTION DIAGRAM - 725 SERIES SINGLE STEP LEVELING SYSTEM YELLOW LEDS MOUNTING / ADJUSTMENT SCREWS (3) ELECTRICAL CONNECTION DIAGRAM BOTTOM VIEW OF MULTIPLEXED INPUT/...
  • Page 20 MASTER LIGHT/BUZZER CONNECTION DIAGRAM 725 SERIES LEVELING SYSTEM A MASTER WARNING INDICATOR SHOULD ALWAYS BE USED. WHEN THE LEVELING SYSTEM HAS STRAIGHT-ACTING JACKS A WARNING BUZZER MUST BE USED. NOTE: BY SUPPLYING IGNITION POWER TO THE WARNING BUZZER AND LIGHT, AND "ACC" POWER TO THE TOUCH PANEL, THE SYSTEM MAY BE OPERATED IN ACCESSORY WITHOUT THE BUZZER SOUNDING.
  • Page 21 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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