Product Description And Features; Overview; Safety Considerations; Typical Operation - Spectrum RRSHA3 Series User Manual

RRSHA Series Hot Air Blower User Manual

1 Product Description and Features

1.1 Overview

Spectrum's RRSHA Track Switch Hot Air Blower
prevents snow and ice from accumulating on
railroad track switches. The RRSHA Hot Air
Blower supplies high-velocity heated air to critical
switch components during inclement weather.
The RRSHA Hot Air Blower can also control
optional equipment such as Crib Heaters or Flat-
Jacket Snow Melters for optimal snow melting
capabilities.

1.1.1 Safety Considerations

This is a guidance document for the convenience of the railroad. When installing electrical
o
equipment, it is important that you meet the NFPA 70: National Electric Code requirements
to protect people and property from electrical hazards. Follow all railroad safety
procedures, related railroad standards, and any applicable third-party standards. Spectrum
does not assume the obligation of enforcing National, State, or City electrical code
requirements.
Read the entire manual before operating the RRSHA Hot Air Blower.
o
Maintenance personnel must always exercise caution when removing access
o
panels. Personal injury from electrical shock or from the moving blower blade may result if
all power sources are not disconnected before servicing. Only qualified personnel should
perform maintenance work.
The operator should avoid contacting the RRSHA Hot Air Blower and track duct during and
o
for some time after operation. Portions of the RRSHA Hot Air Blower and track duct become
quite hot and could cause serious burns if the operator contacts them.
Do not allow objects to enter or block the air intake or exhaust of the RRSHA Hot Air
o
Blower. A blockage will cause overheating. If an object enters the screens, it will damage the
resistor elements, possibly shorting them and causing shock and fire hazards. The track duct
should be checked periodically for blockages by rodents or debris.

1.1.2 Typical Operation

Spectrum delivers the RRSHA Hot Air Blower as a factory-assembled unit ready for
immediate installation. The RRSHA Hot Air Blower is activated in any of the following ways:
Automatically, when the integrated Snow Sensor detects both precipitation and a
o
temperature at or below the preset activation level. The default activation temperature is
38° Fahrenheit, and can be set between 34°F and 44°F.
Remotely, via an external switch such as a three-wire signal interface relay in a control
o
house
Manually, via the Blower Power switch in the main housing unit
o
ENM-3600-00
Fig. 1
RRSHA Hot Air Blower
Installed at Track Site
4