Modular Services STRATUS II User manual


STRATUS™
STRATUS™

2
OVERVIEW
The Stratus™ II is a UL-listed, ceiling-mounted medical services assembly with a double-articulated rotating arm.
The Stratus II is designed to provide flexible and convenient service for medical gas, standard and emergency
power, communications, etc. The Stratus II has a maximum head load capability of 400 pounds and a 350° range
of motion at each joint.

1. Upon receipt of Stratus II units and prior to unpacking, inspect shipping containers for damage. Document
any damage found and notify the carrier and Modular Services Company.
2. Locate the carton for the unit you wish to install. Labels at each end of the carton identify the unit type and general
description of contents, as well as the room number or area of installation (if applicable).
3. Carefully open the top of each carton. Leave unit in crate to protect from damage. Crate is also used to lift
unit into place.
4. Inspect units for defects in materials or workmanship prior to installation. It is the responsibility of the customer
to report any damage or deficiencies to Modular Services immediately upon discovery.
5. Review final approved shop drawings and submittal booklet. These documents will provide you with technical
details specific to your installation, such as:
  • Wiringdiagrams
  • Equipmenttypesandquantities
  • Shopdrawingsofeachtypeunit
  • Roomnumbersandlocationinthebuilding(ifapplicable)
PREPARATION
A support superstructure (purchased separately or provided by others) is to be constructed above the finished
ceiling and firmly attached to the structural ceiling (see Figures 1a, 1b and 2 for suggested means of support for
single and dual units).
NOTE:Singleunitsmaybesuppliedwitheitherasquareorrectangularrough-inplate(seeFigures1aand1b).
Subsequentfiguresdepictthesquareplate;however,theinstallationprocedureisthesameforeitherversion.
 The 4" distance between the bottom of the rough-in plate and the bottom of the finished ceiling, as
well as the 15" diameter ceiling opening, are critical for proper installation. If installing on a hard ceiling, an access
panel(minimum24"square)isneededincloseproximitytotheelectricaljunctionboxes.
The Stratus II includes a 1/2" steel rough-in plate which must be firmly attached to the superstructure, either by
weldingitinplaceorattachingitwithbolts.Thesquarerough-inplateissuppliedwithanattached1/2"steel
support ring, and is to be installed with the support ring facing downward. The rough-in plate must be level to
within 1/4" in order for the Stratus II to rotate properly.
Also included with the Stratus II unit is a service entry bracket containing bulkheads to facilitate connection of
medical gas and electrical services to supply lines. After installation of the rough-in plate, the service entry bracket
is bolted to the top of the rough-in plate (Figure 3).

3
21.00"
16.75"
Support Superstructure
Structural Ceiling
15" dia.
Opening in Finished Ceiling
2" x 2" min. Heavy-Gauge
Tubing or Angle (as required
by engineer of record)
4" ± 0.25"
1/2" Steel
Rough-In Plate
Center of plate is also
centerline of unit
79" radius from
this point
Typical Support Superstructure
Dimension “A” to clear 16.75"
Dimension “A” to be no greater than 17"
Rough-In Plate
Bottom of
Finished Ceiling
Service Entry
Bracket
A
A
Support Ring
1/2" Steel
Support Ring
MAXIMUM LOAD 1000 LBS.
MAX. BENDING MOMENT 4010 FT-LBS
MAXIMUM DEFLECTION OF
SUPPORT STRUCTURE = 0.05"/ft (0.25°)
Plate to rest on this surface
1. All design, fabrication and materials other than the rough-in plate assembly are the responsibility of the engineer of record.
2. Rough-in plate is to be welded or bolted to support superstructure by customer/contractor, subject to engineer of record’s
approval and must be level within 1/4".
NOTE: Rough-in plate is mounted on top of structural supports with support ring facing downward, as shown above.
NOTE: The 4" distance between the bottom of
the rough-in plate and the bottom of the finished
ceiling, as well as the 15" diameter ceiling
opening, are critical for proper installation.
Modular Services Company offers a pre-manufactured
superstructure that has been approved for these loading
and deflection specifications, along with worst-case
seismic conditions. Contact your sales representative
for more information.
21.00"
16.75"


4
Support Superstructure
15" dia.
Opening in Finished Ceiling
23"
16"
2" x 2" min. Heavy-Gauge
Tubing or Angle (as required
by engineer of record)
4" ± 0.25"
1/2" Steel
Rough-In Plate
Center of plate is also
centerline of unit
79" radius from this point
Typical Support Superstructure (by others)
Dimension “A” to clear 23.75"
Dimension “A” to be no greater than 24"
Dimension “B” to clear 16.75"
Dimension “B” to be no greater than 17"
Rough-In Plate
Service Entry
Bracket
AB
28"
21"
MAXIMUM LOAD 1000 LBS.
MAX. BENDING MOMENT 4010 FT-LBS
MAXIMUM DEFLECTION OF
SUPPORT STRUCTURE = 0.05"/ft (0.25°)
Plate to rest on this surface
1. All design, fabrication and materials other than the rough-in plate assembly are the responsibility of the engineer of record.
2. Rough-in plate is to be welded or bolted to support superstructure by customer/contractor, subject to engineer of record’s
approval and must be level within 1/4".
NOTE: Rough-in plate is mounted on top of structural supports, as shown above.
NOTE: The 4" distance between the bottom of
the rough-in plate and the bottom of the finished
ceiling, as well as the 15" diameter ceiling
opening, are critical for proper installation.
Structural Ceiling
NOTE: This illustraon is only to be used
if rectangular mounng plates are already
on-site. For all new orders, refer to illustraons
showing new plate and superstructure.
Bottom of
Finished Ceiling


5
Support Superstructure
15"
dia. each
15"
dia. each
Opening in finished ceiling, one for each unit centered
22.125"
2.75"
22.125"
2" x 2" min. Heavy-Gauge
Tubing or Angle (as required
by engineer of record)
4" ± 0.25"
1/2" Steel
Rough-In Plate
Center of plate is also
centerline of unit
79" radius from this point
Typical Support Superstructure (by others)
Dimension “A” to clear 47.75"
Dimension “A” to be no greater than 48"
Dimension “B” to clear 16.75"
Dimension “B” to be no greater than 17"
Rough-In Plate
Service Entry
Bracket
Service Entry
Bracket
A
B
16"
24.00"
52.00"
26.00"
47"
21.00"
MAXIMUM LOAD 2000 LBS.
MAX. BENDING MOMENT 8020 FT-LBS
MAXIMUM DEFLECTION OF
SUPPORT STRUCTURE = 0.05"/ft (0.25°)
Plate to rest on this surface
Vercal supports
on 25" centers
1. All design, fabricaon and materials other than the rough-in plate assembly are the responsibility of the engineer of record.
2. Rough-in plate is to be welded or bolted to support structure by customer/contractor, subject to engineer of record’s
approval and must be level within 1/4".
NOTE: Rough-in plate is mounted on top of structural supports, as shown above.
NOTE: The 4" distance between the bottom of
the rough-in plate and the bottom of the finished
ceiling, as well as the 15" diameter ceiling
openings, are critical for proper installation.
Structural Ceiling
NOTE: This illustration is
only to be used if rectangular
mounting plates are already
on-site. For all new orders,
refer to illustrations showing
new plate and superstructure.
Bottom of
Finished Ceiling


6
Frame
(reference)
Mounng Plate
Weldment
Service Entry
Assembly
1/4" Nut
1/4"-20 x 1.25" Bolt

Trim
Package
Mounng
Hardware
Remote
Handle
Trim Package
Foam Packing Cradle
 

Unpacking
The crate for the Stratus II unit is designed to protect the arm unit while installing. Lift crate with arm into position
and place the Stratus II arm assembly onto the studs and thread three hex nuts across from each other. Level the
Stratus II arm assembly with these nuts. 

1. Remove top, ends and sides of crate, leaving only the base with legs (Figure 4).
2. Remove accessories and foam packing cradles (Figure 5).

7
Mounng Bolts
Main Head
Assembly

1. Place mounting bolts on main head assembly
(Figure 6), leaving no more than 1/8" protruding
below nut on bottom side. (Do not tighten yet.)
2. Raise unit and crate into place using specified lift
(Figure 7). Level unit and tighten all nuts to at
least150ft-lbs(Figure8).Whenunitissecuredto
mounting plate, remove crate.
 
Tighten these nuts AFTER
leveling main head assembly
Tighten these nuts BEFORE
leveling main head assembly
4" max.
NOTE: Main bearing assembly must be perfectly level
for arms to remain level as they rotate around it


8
A
Detail A

To
Service Entry Bracket
From
Stratus II Column


1. Position the Stratus II column below the lower arm. Temporarily secure the column in position to prevent the
unit from tipping over.
2. Route gas hoses and electrical cables through arms (Figure 9).
3. Raise the Stratus II column to the mounting plate at the bottom of the lower arm bearing assembly (Figure 10),
taking care to not pinch or otherwise damage the medical gas hoses or electrical cables. Tighten set screws
around collar (6 places).

9

1. Connect the green ground strap from the column to the end of the lower arm (Figure 11, item 1).
2. Connect the green ground strap from the upper arm to either the rough-in plate or the service entry bracket
(item 2).

1. Plug handle into wire harness protruding from the corner of the column and attach handle to track (Figure 12).
2. Tighten set screws on the side of the handle.
Connect ground strap
from upper arm to
either the rough-in
plate or the service
entry bracket
Connect ground strap from
column to end of lower arm
1
2
B
Detail B



10

1. Attach the convenience handle track anchor to the vertical track adjacent to the brake release handle
(Figure 13a).
2. Attach the convenience handle to the anchor and press the screw covers into the handle (Figure 13b).
 
D
Detail D
C
Detail C

1. Use extreme care in making the medical gas service connections.
 2. Eachconnectionhasbeenprovidedwithacolor-codedmedicalgaslabel.
3. All medical gas connections are to be made and tested in accordance with NFPA 99.
4. Do not connect the medical gas hoses from the column below to the DISS checks on the service entry bracket
until all brazed connections and testing of medical gas piping systems have been completed.

1. Ensurethatallelectricalpowercircuitsarelockedoffpriortohook-up.
2. Review the wiring diagram or shop drawings.
3. All connections are labeled on the unit at the point of connection.
4. Connect conduits and wiring from the column below to the electrical junction boxes on the service entry
bracketandmakeconnectionsinsidetheboxes,asrequired.Makeconnectionsonthebrakecontrolharness
on both the column end of the unit and to the brake power supply enclosure.
  
5. Test electrical connections in accordance with state and local codes.

1. Install each low-voltage device in accordance with manufacturer’s installation instructions.
 2. Testequipmentinaccordancewithstateorlocalcodes.