GCX VHM-P User manual

DU-WS-0012-49 Rev A 9/9/19 GCX Corp. Page 1 of 13
VHM-P (Non-Locking) Variable Height Arm with 8”/20.3cm or 14” 35.6cm Extension
for Suspension/Dual Display
Front End
(Refer to qualified personnel)
3875 Cypress Drive Petaluma, CA 94954 • 800.228.2555 • +1.707.773.1100 • Fax [phone] • www.gcx.com
Table of Contents
1.0
Parts Reference…………………………………………………………………………………………….
2
2.0
Tools Required………………………………………………………………………………………………
2
3.0
Product Warning / Safety Labels………………………………………………………………………….
3
4.0
Installation, Operation, and Maintenance Warnings…………………………………………………....
3
5.0
Installing the Arm in Channel ……………………………………………………………………………...
5
6.0
Mounting the Device ……………………………………………………................................................
6
7.0
Adjusting the Arm ………………………………………………………………………………………….
7
8.0
Cable Management………………………………………………………………………………………….
8
9.0
Channel Cover Installation………………………………………………………………………………….
12
10.0
Routine Maintenance…………………………………………………………………………………........
12
11.0
Cleaning the Arm…………………………………….…………………………………………………….
12
12.0
Troubleshooting the VHM-P Series Arm………………………………………………………………….
13
Installation Time
Approximately 10-15 minutes
The purpose of this manual is to describe general installation, operation, and adjustment procedures for the VHM-P
Series Arm with Suspension/Dual Display Front End. This manual should be used in conjunction with any instrument-
specific installation guides. Please read this manual and all instrument-specific installation material before installing or
using this product.
Ensure that the weight of the Device and mounting hardware does not exceed the load rating of the
Arm. Check the bottom surface of the Arm for the "Load Range" label.
Counter Balance Load Ranges:
▪25 - 45 lbs / 11.3 - 20.4 kg
Or
▪15 - 30 lbs / 6.8 - 13.6 kg
VHM-P (non-locking)
Dual Display Mount and Channel sold
separately –Shown for reference only

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2.0 Tools Required
The tools listed below are required to install and adjust the Arm.
Provided
1. 1/8” Hex Wrench
2. 5/32” Hex Wrench
3. 1/2” (13mm) / 3/4” (19mm) Combination Wrench
Not Provided
4. #2 Phillips Screwdriver
5. Scissors, utility knife or similar cutting tool
6. Wire Cutters (for cable ties)
7. 3/4" (19mm) Socket Wrench (for front end pivot tension)
1.0 Parts Reference
The following parts and hardware are included and labeled accordingly:
Item #
Description
Quantity
1
VHM-P Series Channel Mount Arm with Extension
1
2
Cable Cover
1
3
Lower Pivot Cover
1
4
Cable Tie
8
5
16” (40.6 cm) Channel Cover
1
6
Adjustable Stop
1
7
30.5” (77.5 cm) Cable Sleeve
2
8
1/2” (13mm) x 3/4” (19mm) Wrench
1
9
1/8” Hex Wrench (not shown)
1
10
5/32” Hex Wrench (not shown)
1
2
5
8
6
4
7
3
1

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•Do not position the Arm or mounted Device above a patient. Note that the Arm has a wide range of motion both
up/down and side to side. Please consider carefully the Device being mounted and the proximity of the mounting
assembly to other equipment, hospital personnel, and the patient. GCX recommends that the hospital’s risk
management personnel verify that the application is appropriate prior to installation and use of this Arm.
•Before the Arm is channel mounted, verify that the channel has been installed and approved in accordance with the
channel installation guide. Documents are available on our website: www.gcx.com / support.
•Ensure that the weight of the Device and Brackets being mounted does not exceed the load rating of the Arm. Check
the bottom surface of the Arm for the "Load Range" label. Refer to Section 3.0.
•Do not use power tools to make any adjustments on Arm.
4.0 Installation, Operation, and Maintenance Warnings
This section contains warnings regarding the installation, operation, and maintenance of the Arm. This section
must be read in its entirety before installing, operating, and maintaining the Arm. Failure to follow these warnings
may result in damage to equipment or injury to personnel.
Warnings
3.0 Product Warning / Safety Labels
Do not remove device when arm is in a lowered
position.
Refer to Installation Guide for additional information.
Remove the Device only when the Arm is at the
highest position.
Potential pinch points that may cause personal
injury.
Counter Balance Load Range:
25 - 45 lbs / 11.3 - 20.4 kg
or
15 - 30 lbs / 6.8 - 13.6 kg

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•Due to risk of personal injury or damage to the Arm, the Arm housing must never be disassembled by non-GCX
personnel. Failure to comply will void the warranty.
•
•Remove the Device only when the Arm is at the highest position. Due to the counter balance function, the Arm will
naturally rise to the highest position when weight is removed. This can happen suddenly if the weight is removed at any
height other than the highest point.
•
•Note that the VHM-P Arm has a wide range of motion both up/down and side to side. Please consider potential pinch
points that may cause personal injury.
•
•Failure to periodically inspect and adjust the Arm as instructed may result in damage to equipment or injury. If you are
unable to adjust the arm or require service, contact GCX technical support at 800.228.2555 or + 1 707.773.1100.
•
•The mounted device or arm may move suddenly due to normal wear or improper adjustment of the, swivel, and pivot
functions (see Sections 7.2, 7.3 and 7.4), improper counterbalance (Section 7.1) or ultimately, gas spring end of life. The
gas spring has a limited life span and will lose some strength over a long period of time. The Arm must be inspected
and maintained at least once a year. This inspection must include the steps outlined in Section 10.0.
VHM-P (non-locking)
Pinch Points

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5.2
5.1
5.0 Installing the Arm in Channel
5.1Insert Adjustable Stop into top of channel and slide to desired mounting position.
5.2 Using a #2 Phillips screwdriver, tighten the center screw to secure position.
5.3
Slide
5.3 While supporting the Arm, guide the Slide into the top of the channel and position onto the Adjustable Stop.
5.4 Using the 1/8'' hex wrench provided, tighten the (2) upper and the (2) lower set screws in Slide to secure position of Arm.
5.4
Set Screws (2 upper)
Set Screws (2 lower)
Before mounting the Arm, verify that the channel has been installed and approved in accordance with
the channel installation guide included with the channel.

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6.0 Mounting the Device
Mounting hardware and all device(s) and accessories must be installed on the Arm prior to counterbalance. Install
Mounting Hardware and device(s) in accordance with separate Installation Guide(s) provided with the Mounting Hardware
(ordered separately).
7.0 Adjusting the Arm
Installation Note: Adjustments are factory pre-set. However, adjustments to counterbalance, swivel tension, and pivot
tensions may all be required to achieve optimal arm performance. Detailed instructions for making adjustments follow in the
section below. When properly adjusted the mounted device will move easily throughout the arms full range of motion. Refer
to the Routine Maintenance Check List in Section 10 for a quick guide to these functional checks.
Caution: Use caution as it may be necessary to support the weight of the arm/mounted device(s). This process
may require an additional person. Use caution while performing this procedure.
7.1 Adjusting Counterbalance
Counterbalance Adjustment Screw
Counterbalance Adjustment –
The Counterbalance Adjustment Screw is located under the Arm in front of the center pivot assembly. Grasp the mounted
device and move the Arm to a level horizontal position. Using a 5/32” hex wrench, tighten (+) or loosen (-) the
Counterbalance Adjustment Screw. Counterbalance is correctly adjusted when the mounted device can be moved up or
down with minimal force and does not rise or fall after releasing the Arm.

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7.4 Rear Pivot Tension Adjustment
To adjust the rear pivot tension:
1. Tighten (+) or loosen (-) the Pivot Tension Screw with a
Phillip’s screwdriver until desired tension is achieved.
7.3 Center Pivot Tension Adjustment
To adjust the center pivot tension:
1. Tighten (+) or loosen (-) the Pivot Tension Nut with a 3/4" (19
mm) wrench until desired tension is achieved.
Caution
: Do not remove the Pivot Tension Nut.
To adjust the tension at the front end:
1. Tighten (+) or loosen (-) the Swivel Tension Nut with a 3/4"
(19mm) socket wrench until desired tension is achieved.
Total adjustment is approximately 1/4 to 1/2 turn.
Caution: Do not remove the Swivel Tension Nut.
7.2 Swivel Tension Adjustment
Swivel Tension
Nut

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Cable Anchor
Channel Cover
Upper Pivot Cover
Cable Sleeve
Pivot Collar
8.0 Cable Management
Lower Pivot Cover
Four (4) cable anchors are provided at the front of the arm to secure cables and create the correct service loop. Cables are
secured to the anchor points using plastic cable ties included with the arm. If replacement cable ties are required, standard
commercial cable ties can be used.
Two (2) cable sleeves are provided to assist in determining service loop 2 and to help protect / organize the cables as the
arm is moved throughout its range of motion. Each cable sleeve will hold three (3) small cables or one (1) large and one (1)
small cable. Use of the cable sleeves is optional.
Cable Anchor
Cable Cover
Lower Pivot Cover
Cable Routing
Cables are routed from the front of the arm to the channel to provide an organized installation. Proper
installation of the cabling will ensure the arm operates correctly through its full range of motion and that there
are adequate service loops for the cables to avoid damage to cables or the mounted device. Cables are
anchored at the front of the arm (after service loop to device is determined), routed into the cable cover,
through the center pivot assembly and through the extension.
Parts included for cable routing:
Cable Sleeves, 30.5” (77.5cm) long: 2
Cable Cover
Lower Pivot Cover
Cable Ties: 8
Extension Cable Cover

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Insert cables into sleeve
Cable Sleeve must have a 1/4 rotation overlap minimum.
1/2” (13mm)
Clip excess length of the cable tie as flush as
possible to avoid creation of a sharp edge.
Anchor Point
Organize Cables and Determine Cable Service Loop 1
Organize the cables. Identify all cables that need to route
through the Arm / Extension to the Channel and ensure they
are long enough. Insert cables into Cable Sleeves if they are
being used (see diagram below). Connect all cables to the
device and organize them so those on the left side of the device
route to the left side anchor points and those on the right side
route to the anchor points on right side of the arm.
Determine Service Loop 1. Determine the service loops needed
from connections on the device to the front anchor points. Do
this by tilting the device all the way forward (when appropriate),
to create the longest path from device connections to anchors.
Then assure there is an adequate service loop (length of cable)
to avoid damage to cables and connectors or unintended
disconnection of cables.
Use of Cable Sleeves is optional but recommended.
CAUTION: Cable sleeve
material other than that
supplied with the arm (or
equivalent) should not be
used without verification
of function.
Anchor Cable Bundles. After Service Loop 1 is determined adjust the Cable Sleeve and secure each cable bundle to a
Cable Anchor using a cable tie around 1/2” (13mm) from the end of the Cable Sleeve. Before securing the cable tie,
ensure the service loop to the device is still correct and secure only one bundle per anchor.
Best use of Cable Ties. Position the female receptacle of cable tie against
the Arm before tightening. Secure cables by pulling on the cable tie until the
cable bundle does not move. Use of pliers may assist in providing enough
cable tie tension on the cable bundle. Clip excess length of the cable tie as
flush as possible to avoid creation of a sharp edge.
Service Loop(s) 1
Accommodate dynamic distance from
device connections to anchor points.
Service Loop(s) 1
(device dependent)

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Service Loop 2
Figure C
Figure D
Pivot the Cable Cover up towards the Arm –Figure C. Gently squeeze the front of the Cable Cover and insert tabs of the Cable
Cover into the mating slots to secure the Cable Cover –Ensure the Cable Cover is engaged in the mating slots –Figure D.
Service Loop 2
Approximately 30” (72.6cm)
End
See Fig. G
Start
Determine Service Loop 2. Using the provided lengths of cable
sleeves will facilitate setting Service Loop 2. The end of Service
Loop 2 is simply the end of the cable sleeve. If the provided cable
sleeves are not being used, then measure and mark the cables
appropriately. The start of Service Loop 2 is the front-end Cable
Anchor point and the end is approximately 30” (76.2cm) from the
start.
The end of Service Loop 2 will be about 1.5”-3.5” (38-89mm) inside
the cable cover on the underside of the extension (there is no
anchor point at the end of Service Loop 2).
Place the left and right cable bundles into the corresponding track of the Cable Cover (Note: Larger Cables should be placed
in first) –Figure A. Insert the rear end of the Cable Cover into the two (2) mating slots located below the Arm –Figure B.
Figure B
Figure A