Roof hatch RHT and ladder EL/OL

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Combination: roof hatch type RHT and ladder type EL/OL

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Specifications

Roof hatch type RHT, standard

Standard size / Weight:

  • RHT7090: 700 x 900 mm / 38 kg
  • RHT9090: 900 x 900 mm / 44 kg
  • RHT7014: 700 x 1400 mm / 52 kg
  • RHT1010: 1000 x 1000 mm / 50 kg
  • RHT1015: 1000 x 1500 mm / 65 kg
  • RHT1020: 1000 x 2000 mm / 82 kg
  • RHT9024: 900 x 2400 mm / 89 kg

Hinge side = long side

 

Gorter® - completely assembled, surface mounted:

  • Thermal separated and insulated aluminium construction
  • Counterbalancing system for assisted opening and controlled closing
  • Double sealing for weather and water tightness
  • Fully opened cover engages automatically, with release button
  • Diagonal handrail to safely enter and leave roof hatch
  • Cylinder lock (31 x 70 mm) with 3 keys, in- and outside operation, opening length > 1501 mm with 3 point lock

 

CodeMark certified for Australia & New Zealand

  • Australia CM70087, New Zealand CM70088

 

Performance according to CE (ETA-15/0338):

  • Resistance to permanent loads (Eurocode EN 1993-1-1): 1050 kg/m²
  • Sound reduction (EN-ISO140-3): 26 dB
  • Watertightness (EN 12208): Class E 650
  • Resistance to wind load (EN 12210): Class E 3000
  • Resistance to snow loads (EN 1991-1-3): 3.97kN/m²
  • Impact hard body (EN 356): Class P5A
  • Impact soft body (EN 13049): Class 5
  • Air permeability (EN 12207): Class 3

 

Standard powder coating:

Powder coated in RAL7047 (outside) and RAL9010 (inside).


Safety Ladder
Type EL- single and OL - double or triple, depending on height.
Standard features:
Ladder supplied in anodized aluminium. Two hooks on top to be hooked over a fixed step to safely enter and leave roof hatch. Hooks can be locked (padlock by others) to prevent ladder from misuse.
Ladder can be stored in the 2 wall suspension brackets, 1 with padlock hasps (padlock by others).
Step to be fixed (by others) into roof opening near access side

 

Height: ........ mm
to be specified from floor to top of roof (without insulation and covering), max 7200 mm

 

Width: depending on length and type from 360 - 490 mm
Distance between rungs: 250 mm
Material: Aluminium

 

Included in supply:

  • 2 Fixed hooks, one provided for padlock
  • 1 Step with brackets
  • 2 Suspension brackets, 1 provided for padlock

Options

Gorter® Electrical Operation of Roof Hatches and Floor Doors

Gorter® Electrical Operation of Roof Hatches and Floor Doors

Standard Electrical operation - GT35

electrical operation gt35The Gorter GT35 electrical operation is a solution, which can be fitted on any standard Gorter RHT roof hatch or floor door of the type WA, WAPT and OP. The two powerful electric motors are always fitted as a pair on both sides of the lid. The motors are pre-fitted from the factory or can be fitted afterwards on any standard RHT roof hatch from model year 2012 and later.

 

Suitable for

  • Roof hatches type RHT standard
  • Hinged Floor doors type WA (flush), WAPT and OP

 

Operation and control 230Vac

The Gorter GT35 is a system with two motors and a control unit. The system comes standard with a wireless remote control and a compact control panel. The keypad connected with signal cable can be installed remote from control unit.

Dimensions:

Control unit: 265 x 105 x 40 mm

Keypad: +/- 70 x 50 x 10 mm

Length of signal/power cable motors: 2 m

Electrical installation:

The drives and the wiring must be installed by a certified installer

 

Operation for a hatch with double lids

electrical_operation

Depending on the access door type, the weight of the cover and the application, we can install one or more gear rack drives. These drives are available in 24 Vdc or 230 Vac.
Operation and control 230Vac

This is the simplest system with 1 motor. It can be operated with an integrated or surface-mounted switch, not included.
Operation and control 24Vdc
Operation of one or more drives is controlled by a control box with rectifier that is connected to the electricity network.
Features

  • Communication with central alarm system, possibly combined with emergency switch
  • Programmable
  • Operation control of other objects
  • Control by automatic detectors - smoke, rain, wind, fire etc.
  • Automatic sequence control of two covers that are overlapping
  • Automatic stop in case of unequal load or overload
  • etc.

Depending on the features we will recommend a suitable control box type.
Emergency hatches and doors:
It is of life importance that an emergency door opens after a break down of the electrical system. For those reasons a control box can be provided with a built-in emergency power pack.
Electrical installation:

The drives and the wiring must be installed by a certified installer.


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Gorter roof hatches with ladders provide practical and safe access to flat roofs for maintenance work as well as access to cooling installations, lift machine rooms, window cleaning installations, solar collectors, and other facilities on rooftops. Roof hatches can be installed on flat roofs with a maximum slope of 30°.

 

Extension ladder

Depending on the floor height, the Gorter combination of roof hatch and ladder is available with a single, double or triple extension ladder. The Gorter ladder is supplied as standard with suspension brackets for safe storage when the ladder is not in use. This combination is ideal for infrequent use of the roof hatch. For more frequent use, we recommend a roof hatch with scissor stairs or fixed staircase.

 

Fully thermally broken

The Gorter RHT roof hatch has a fully thermally broken curb and cover, and a proven high insulation value. This minimises the chance of condensation forming and guarantees energy cost savings.

 

Gorter RHT roof hatch with ladder:

  • Roof hatch with fully thermally broken curb and cover
  • Roof hatch safe operation with one hand
  • Safe grip all the way to the roof

  • 10-year warranty on the roof hatch, 1 year on climbing devices

  • Optional electric control of roof hatch
  • High-quality aluminium construction of hatch and ladder
  • Euro cylinder lock with indoor and outdoor operation
  • Burglar- and sound-proof roof hatch
  • Wall brackets and ladder with padlock fixture to prevent unwanted removal of the ladder
  • Fast delivery

Read more about the advantages of Gorter roof hatches here

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