RITE-HITE LRL User manual

LRL
Elevating Dock Lift
Installation Manual
MADE IN U.S.A.
This Manual Covers Dock Lifts Built After Serial Numbers:
07-LC450001C and up
PRINTED IN U.S.A.
RITE-HITE PRINT SHOP
PUBLICATION NO. 1239
RITE-HITE PART NO. 0128435
JULY 2008

RITE-HITE®LRL Series Elevating Dock Lift Installation Manual
2 Pub. No. 1239 - July 2008
NOTES

RITE-HITE® LRL Series Elevating Dock Lift Installation Manual
Pub. No. 1239 - July 2008 3
TABLE OF CONTENTS
Notice To User . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Safety Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
NOTICE TO USER
Your local RITE-HITE®representative provides a Planned Maintenance Program (P.M.P.) which can be fitted to your
specific operation. Call your local representative or the RITE-HITE®Corporation at 414-355-2600.
The RITE-HITE®products in this manual are covered by one or more of the following U.S. patents: 4,865,507; 4,920,598;
4,995,130; 5,040,258; 5,271,183; 5,323,503; 5,375,965; 5,440,772; 5,442,825; 5,531,557; 5,546,623; 5,553,987;
5,582,498; 5,664,930; 5,702,223; 5,762,459 (RE: 37,570); 5,882,167; 5,964,572; 6,010,297; 6,052,268; 6,065,172;
6,070,283; 6,074,157; 6,085,375; 6,092,970; 6,106,212; 6,116,839; 6,190,109; 6,220,809; 6,627,016; 6,238,163;
6,311,352; 6,318,947; 6,322,310; 6,360,394; 6,368,043; 6,431,819; 6,488,464; 6,497,076; 6,499,169; 6,505,713;
6,524,053; 6,634,049; 6,654,976; 6,676,360; 6,726,432; 6,773,221; 6,832,403; 6,880,301; 7,032,267; 7,062,814;
7,134,159; 7,213,285; 7,216,391 and pending U.S and foreign patent applications. RITE-HITE®, LEVEL-RITE®,
THINMANTM, SAFE-T-LIP®, HYDRACHEK®, WHEEL-LOKTM, DOK-LOK®, DUAL-DOK®, SAFE-T-STRUTTM,
DOK-COMMANDER®, JUMBOTM, HYDRA-RITETM, SAFE-T-GATE®, and SMOOTH TRANSITION DOK SYSTEMTM, are
trademarks of RITE-HITE®Corporation.
IMPORTANT
Read and understand contents of this manual prior to installation or operation of this equipment.
For best results, have this product serviced by your authorized RITE-HITE®representative.

RITE-HITE®LRL Series Elevating Dock Lift Installation Manual
4 Pub. No. 1239 - July 2008
SAFETY WARNINGS
FIGURE 1 - LOCKOUT/TAGOUT
LOCKOUT/TAGOUT PROCEDURES
The Occupational Safety and Health Administration requires that, in addition to posting safety warnings and barricading
the work area, the power supply has been locked in the OFF position or disconnected. It is mandatory that an approved
lockout device is utilized. An example of a lockout device is illustrated. The proper lockout procedure requires that the
person responsible for the repairs is the only person who has the ability to remove the lockout device.
In addition to the lockout device, it is also a requirement to tag the power control in a manner that will clearly note that
repairs are under way and state who is responsible for the lockout condition. Tagout devices have to be constructed and
printed so that exposure to weather conditions or wet and damp locations will not cause the tag to deteriorate or become
unreadable.
RITE-HITE®Corporation does not recommend any particular lockout device, but recommends the utilization of an OSHA
approved device (refer to OSHA regulation 1910.147). RITE-HITE®Corporation also recommends the review and
implementation of an entire safety program for the Control of Hazardous Energy (Lockout/Tagout). These regulations are
available through OSHA publication 3120.
This is the highest level statement. Failure to
follow the listed instructions will most likely result in
severe injury or death.
This is a statement of serious hazard. Failure
to follow the listed instructions could place the
individual at risk of serious injury or death.
The statements used with this level of
warning deal with a safe operating
procedure. If the procedure is ignored, the
possibility of personal injury may exist.
IMPORTANT is used to draw attention
to a procedure that needs to be followed to prevent
machine or property damage.
When working with electrical or electronic controls,
make sure that the power source has been locked
out and tagged according to OSHA regulations and
approved local electrical codes.

RITE-HITE® LRL Series Elevating Dock Lift Installation Manual
Pub. No. 1239 - July 2008 5
OTHER IMPORTANT SAFETY WARNINGS
Never be under the LRL platform or lip without:
• Engaging the Maintenance Strut.
• Turning off power to the control box.
• Locking out and tagging out the main power
source, as shown under Safety Warnings
on preceding page.
• Before starting installation or maintenance,
check and follow the safety procedures of the
facility where the LRL is being installed.
• Never enter a truck/trailer until its brakes are
set, air has been dumped from air ride
suspension (if applicable), and you have
visually inspected to be sure truck/trailer is
securely held in place by a vehicle restraint or
wheel chock per OSHA regulations.
• DO NOT operate with anyone under platform
or in front of the lip.
• Keep hands, limbs and loose hair clear of
equipment when operating. DO NOT wear
loose clothing or jewelry while operating
this equipment.
• When docklift is not in use, it is recommended
to store it with the platform fully lowered.
• If a malfunction does occur, always call your
authorized RITE-HITE®service representative
immediately.
Inspect the LRL monthly to ensure that there are no
broken or worn parts which could cause injury to
personnel or damage to the equipment.
Always barricade the LRL at ground level and dock
level from any form of traffic when maintenance is
required.

RITE-HITE®LRL Series Elevating Dock Lift Installation Manual
6 Pub. No. 1239 - July 2008
SAFETY DEVICES
Never be under the LRL Series Elevating Dock Lift
platform or lip without:
• Engaging the Maintenance Strut. See below
right.
- Press UP Button until platform reaches its
highest position.
- Place Maintenance Strut in position. See
Figure 2.
- Press DOWN Button until platform stops
and Maintenace Strut is engaged.
• Lockout/Tagout power supply.
- Turn off the power to the control box.
- Lockout/tagout the main power source, as
shown under Safety Warnings on the
inside front cover of this manual.
- Always barricade the dock lift at dock level
and drive level to prevent any
unauthorized use of the dock lift.
Remove the Maintenance Strut.
• For Maintenance Strut removal, raise the dock
lift to its highest position. Return the
Maintenance Strut to the proper storage
position.
• If you are unable to install the Maintenance
Strut properly, contact your authorized
RITE-HITE®Service Representative or RITE-
HITE®Customer Service at 1-800-456-0600.
• Post warnings and barricades at dock level
and at drive level to indicate that work is
being done around and under the lift table.
FIGURE 2 - ENGAGE MAINTENANCE STRUT
MAINTENANCE STRUT
IN STORED POSITION
MAINTENANCE STRUT
IN ENGAGED POSITION

RITE-HITE® LRL Series Elevating Dock Lift Installation Manual
Pub. No. 1239 - July 2008 7
INSTALLATION INSTRUCTIONS
+
-
1/4"
1/2"
TYPICAL
LIP RECESS
IF REQUIRED
PIT LENGTH
LIP LENGTH
LIP RECESS WIDTH
PIT WIDTH
DRAIN IF REQUIRED.
NECESSARY FOR OUTDOOR
APPLICATIONS.
CONDUIT(S) TO
POWER UNIT
3"x 3"x 3/16"
CURB ANGLE
W/ 6” NELSON STUDS
ON 12” CENTERS
(BY OTHERS)
3" CONDUIT FOR
HYDRAULIC HOSES
MIN. BEND RADIUS 18"
1" CONDUIT REQUIRED
WITH ELECTRICAL OPTIONS
USE 90 LONG ELBOW:
- SAFETY TRIP BARS
- UP LIMIT SWITCH
- PUSH BUTTON ON PLATFORM
C
L
C
L
20"
TYP
.
30" 24"
2"
2"
SIZE: 72” x 96” TO 96” x 120”
CAPACITY: 5, 6, 8 & 10,000 LBS
NOTES:
1. PERIMETER OF PIT FLOOR
MUST BE KEPT LEVEL
2. PIT MUST BE KEPT SQUARE
3. PIT WIDTH AND LENGTH
CALCULATION
A) ADD 2 INCHES TO WIDTH AND LENGTH
B) ADD 1 INCH FOR EACH LIP PER SIDE TO
ALLOW FOR HINGE
EXAMPLE: 72" x 96" PLATFORM WITH LIP
ON ROLLING END
-WIDTH: 72 + 2 = 74 INCHES WIDE
-LENGTH: 96 + 2 + 1 = 99 INCHES LONG
4. LIP RECESS (IF REQUIRED)
LIP RECESS WIDTH = LIP WIDTH + 2 INCHES
LIP RECESS LENGTH = LIP LENGTH + 1/2 INCHES
5. CURB ANGLE LENGTH CALCULATION
2 PIECES: PIT WIDTH
2 PIECES: PIT LENGTH + 6 INCHES
3" APF
+
-
1/4"
CONTACT RITE-HITE APPLICATIONS IF YOUR LRL DOES NOT MEET THESE REQUIREMENTS!
+
-
1/4"
PIT DETAIL FOR LRL WITH ONE LIP ON ROLLING END
-
1/4"
+
8-1/2"
12-1/2"
10-1/2"
10,000 Lbs. Cap. Unit
12-1/2"
6,000 Lbs. Cap. Unit 5,000 Lbs. Cap. Unit 8,000 Lbs. Cap. Unit
O
FIGURE 3 - PIT DETAILS

RITE-HITE®LRL Series Elevating Dock Lift Installation Manual
8 Pub. No. 1239 - July 2008
PREPARATION PRIOR TO INSTALLATION
1. Elevating dock lift is shipped equipped with lifting lugs.
DO NOT remove until lift is resting in pit. (Lifting lugs
prevent the lift table from opening when the lift table is
lifted into place.)
2. Verify that dock lift voltage matches the voltage
supplied.
INSTALLATION INTO PIT
1. Clean out pit and remove all debris from work area.
2. Attach lifting chain to dock lift and position as close to
pit area as possible. See figure 4.
3. Disconnect hydraulic hoses from power unit. Feed
hydraulic hoses through conduit.
NOTE: Hydraulic hoses MUST BE protected from any
dirt or debris that could enter the system.
4. If equipped, disconnect wiring from power unit. Feed
wiring through conduit.
5. Lower the dock lift into the pit while pulling the
hydraulic hoses and wiring through the conduits.
6. Install hydraulic hoses to power unit and make
necessary connections.
ELECTRICAL INSTALLATION PROCEDURES
1. Position power unit adjacent to the dock position.
2. Secure power unit in accordance with all local
electrical codes.
3. Connect wiring as indicated by Electrical Schematics
located in the control box.
Control Box Installation Guidelines - Temperature
Controlled Applications.
a. Conduit should be routed to enter through the bottom
or side of the enclosure. A drip leg may be needed if
the conduit could fill with water.
b. Seal the conduit in any location where the conduit
transitions temperature zones that may produce
condensation.
c. Spacers should be installed between the enclosure and
the wall to provide tempature insulation and air flow.
INSTALLATION INSTRUCTIONS - CONT.
Make sure that the lift power has been locked out
and tagged out according to OSHA regulations and
approved local codes before performing any welding
on the dock lift or when working on electrical or
electronic controls.
Make sure that the lifting equipment is rated for 4,000
Lbs. - (5 / 6K), or 5,000 Lbs. - (8 / 10K) lifting capacity
or greater.
• Post safety warnings and barricade work area
to prevent unauthorized use of the elevating
dock lift while work is being performed.
• ALWAYS ground to the frame or pit angle
when welding. DO NOT ground welding
equipment to any electrical components. DO
NOT ground to lift platform when welding
on lift frame. Damage to bearings or
electrical components may result.
• DO NOT connect green ground lead into
control box or junction box until all welding is
complete.
• Protect Hydraulic Hose assemblies from
damage due to welding, grinding or sharp
objects.
• DO NOT position the dock lift on its side or
turn the dock lift topside down at any time.
• If a procedure is not clearly defined in this
manual, contact your local representative or
RITE-HITE®at 1-800-456-0600 before
proceeding.

RITE-HITE® LRL Series Elevating Dock Lift Installation Manual
Pub. No. 1239 - July 2008 9
INSTALLATION INSTRUCTIONS CONT.
HYDRAULIC HOSES
LIFTING LUGS
AND HARDWARE
ELECTRICAL
WIRING IF APPLICABLE
UNIT IN PIT
THREADED
RODS
FIGURE 4 - INSTALLATION INTO PIT
Never be under the LRL platform or lip without:
• Engaging the Maintenance Strut.
• Turning off power to the control box.
• Locking out and tagging out the main
power source, as shown under Safety
Warnings.

RITE-HITE®LRL Series Elevating Dock Lift Installation Manual
10 Pub. No. 1239 - July 2008
SHIM AND MOUNTING INSTALLATION WITH
ELECTRICITY
1. Square dock lift in pit area with spaces equal on all
sides.
2. Remove lifting lugs and hardware.
3. Turn on power.
4. Raise dock lift to working height and block at roller end
with base mounted maintenance strut. See figure 2.
5. Remove the threaded rods from the frame angle upon
installation. See figure 4.
INSTALLATION INSTRUCTIONS - CONT.
1”
1”
1/4”
1/4”
4 PLACES
LEG ROLLER
1/4” 1” 2 PLACES
32”
4”
ROLLER PATH SHIM DETAIL
(PROVIDED BY OTHERS)
Under Each Roller Path.
(2 Places)
Thickness Depends On
How Much Is Needed To
Level Dock Lift To Floor.
4” 2”
2”
6-1/2”
O 5/8”
BASE FRAME SHIM DETAIL
(PROVIDED BY OTHERS)
Under Each Mounting Angle.
(4 Places)
Thickness Depends On
How Much Is Needed To
Level Dock Lift To Floor.
SHIM UNDER FIXED
END LEG CLEVIS SHIM UNDER
ROLLER PATH
FIGURE 5 - SHIM INSTALLATION
• ALWAYS ground to the frame or front pit angle
when welding. DO NOT ground welding
equipment to any electrical components. DO
NOT ground to lift platform when welding
on lift frame. Damage to bearings or electrical
components may result.
• DO NOT connect green ground lead into
control box or junction box until all welding is
complete.

RITE-HITE® LRL Series Elevating Dock Lift Installation Manual
Pub. No. 1239 - July 2008 11
6. Shim dock lift so it is level with the floor. Install shims
(provided by others) under each mounting angle (Qty.
4) and under each roller path (Qty. 2). See figure 5.
7. Disengage maintenance strut and lower unit to verify
that dock lift is square in pit and level with the floor.
Adjust and repeat previous steps as nesessary.
8. Raise dock lift to working height and block at roller end
with base mounted maintenance strut. See figure 2.
9. Using the hole in each mounting angle on the frame
as a guide, drill a 1/2” diameter hole a minimum of 5”
deep. Clean out hole. See figure 6.
10. Install 1/2” x 5” long concrete anchor bolts (provided
by others) through hole in each mounting angle. See
figure 6.
11. Weld all shims to frame. See figure 5.
12. Raise and lower dock lift at least three times to expel
air from the system.
13. Verify that there are no oil leaks.
INSTALLATION COMPLETE!
INSTALLATION INSTRUCTIONS - CONT.
FRAME
LAG FRAME TO FLOOR
USING 1/2" X 5" LG.
CONCRETE ANCHOR BOLTS
4 PLACES
FIXED END
ROLLING END
TOP VIEW
PLATFORM REMOVED
FIGURE 6 - ANCHOR INSTALLATION

RITE-HITE®LRL Series Elevating Dock Lift Installation Manual
12 Pub. No. 1239 - July 2008
INSTALLATION INSTRUCTIONS - CONT.
SHIM AND MOUNTING INSTALLATION
WITHOUT ELECTRICITY
1. Square dock lift in pit area with spaces equal on all
sides.
2. Determine how much shim thickness will be required to
make the lift level with the floor.
3. Remove two front lifting lugs and hardware.
4. Remove the threaded rods from the frame angle upon
installation. See figure 4 & 7.
5. Pull each threaded rod up until it stops and reinstall the
lifting lugs and hardware. See figure 7 & 8.
6. Attach three-way lifting chain to lifting lugs and crane.
See figure 8.
7. Raise dock lift to working height with crane and block
at roller end with base mounted maintenance strut. See
figure 2 & 8. While raising the dock lift, the hydraulic
lifting cylinders will be pulled off of their mounting
angle. The cylinders should remain retracted. See
figure 8. Keep tension on the lifting chains while
working under the dock lift.
8. Shim dock lift so it is level with the floor. Install shims
(provided by others) under each mounting angle (Qty.
4) and under each roller path (Qty. 2). See Figure 5.
9. Using the hole in each mounting angle on the frame
as a guide, drill a 1/2” diameter hole a minimum of 5”
deep. Clean out hole. See Figure 6.
10. Install 1/2” x 5” long concrete anchor bolts (provided
by others) through hole in each mounting angle. See
Figure 6.
11. Weld all shims to frame. See Figure 5.
FIGURE 7 - THREADED ROD REMOVAL
• ALWAYS ground to the frame or front pit angle
when welding. DO NOT ground welding
equipment to any electrical components. DO
NOT ground to lift platform when welding
on lift frame. Damage to bearings or electrical
components may result.
• DO NOT connect green ground lead into
control box or junction box until all welding is
complete.
• DO NOT lower the lift without electricity.
Damage to the hydraulic lifting cylinders
and their mounting angles could occur!

RITE-HITE® LRL Series Elevating Dock Lift Installation Manual
Pub. No. 1239 - July 2008 13
INSTALLATION INSTRUCTIONS - CONT.
ONCE ELECTRICITY HAS BEEN RESTORED
1. Verify that powerunit has been electrically connected
and hydraulic hoses have also been connected
properly.
2. Press the RAISE pushbutton to allow the hydraulic
lifting cylinders to extend their rods. Stop extending the
cylinder rods just before the cylinder mounting angle.
See Figure 9.
3. With someone assisting you, continue to press the
RAISE pushbutton while they guide the cylinder rods
into the cylinder mounting angle. See Figure 9.
4. Disengage maintenance strut and lower unit to verify
that dock lift is square in pit and level with the floor.
5. Raise and lower dock lift at least three times to expel
air from the system.
6. Verify that there are no oil leaks.
INSTALLATION COMPLETE!
FIGURE 8 - CRANE LIFTING
To Crane
FIGURE 9 - LIFTING CYLINDERS

RITE-HITE®LRL Series Elevating Dock Lift Installation Manual
14 Pub. No. 1239 - July 2008
NOTES

RITE-HITE® LRL Series Elevating Dock Lift Installation Manual
Pub. No. 1239 - July 2008 15
NOTES

RITE-HITE®STANDARD WARRANTY
Rite-Hite®warrants that its products will be free from defects in design, materials, and workmanship for
a period of 365 days from the date of shipment. All claims for breach of this warranty must be made
within 30 days after the defect is or can, with reasonable care, be detected and in no event no more
than 30 days after the warranty has expired. In order to be entitled to the benefits of this warranty, the
products must have been properly installed, maintained, and operated within their rated capacities and/or
specified design parameters, and not otherwise abused. Periodic lubrication and adjustment is the sole
responsibility of the owner. This warranty is rite-hite’s®exclusive warranty. Rite-Hite®expressly disclaims
all implied warranties, including the implied warranties of merchantability and fitness. Non-standard
warranties, if any, must be specified by Rite-Hite®in writing.
In the event of any defects covered by this warranty, Rite-Hite®will remedy such defects by repairing or
replacing any defective equipment or parts, bearing all the costs for parts, labor, and transportation. This
shall be the exclusive remedy for all claims whether based on contract, negligence, or strict liability.
LIMITATION OF LIABILITY
RITE-HITE®SHALL NOT IN ANY EVENT BE LIABLE FOR ANY LOSS OF USE OF ANY EQUIPMENT
OR INCIDENTAL OR CONSEQUENTIAL DAMAGES OF ANY KIND, WHETHER FOR BREACH OF
WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
Global Sales & Service Office:
RITE-HITE®
8900 N. Arbon Drive
P.O. Box 245020
Milwaukee, Wisconsin 53224
Phone: [phone]
1-800-456-0600
www.ritehite.com
Representatives in all Major Cities