Rapid Engineering UHAT 150, Installation, Operation & Service Manual

Page: 37 / 72

SECTION 11: O
PERATION AND
M
AINTENANCE
29 of 59
SECTION 11: OPERATION AND MAINTENANCE
Read this manual carefully before installation,
operation, or service of this equipment. All
components are accessed via the hinged door.
Opening the door exposes live electrical
connections and hot components. Prior to any
maintenance or service of the heater, shut off,
lockout and tagout the electrical disconnect and gas
valve that supplies the unit in accordance with
OSHA regulations.
11.1 Pre-Start-Up Checks
All pre-start-up checks must be carried out before
lighting the heater.
Ensure that the heater and all controls are suitable
for the gas, pressure and electrical supply to which
they are to be connected.
11.1.1 Louvers
Where fitted, the air delivery louvers need to be set
during start-up to give the required air distribution.
11.1.2 Electrical Checks
1. Check that all site wiring is connected in
accordance with the appropriate wiring diagram
on Page 22, Section 10.3, Page 24, Section
10.5 or Page 26, Section 10.7.
11.1.3 Gas Supply
All aspects of the gas installation including the gas
meter must be inspected, tested for gas tightness
and purged in accordance with local and national
codes.
Ensure that the air is fully purged from the heater
inlet pipe up to the main gas valve inlet test nipple.
11.1.4 Mechanical Checks
1. Check that the fan(s) are free to run and
delivery louvers are turned to give required
air deflection.
2. Check that the flue (and air intake for separated
combustion units) is installed in accordance
with the instructions in this manual and local
regulations. See Page 10, Section 7.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Edges are sharp.
WARNING
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Burn Hazard
Allow heater to cool
before service.
Tubing may still be hot
after operation.
Explosion Hazard
Turn off gas supply to
heater before service.
DANGER
Electrical Shock Hazard
Disconnect electric
before service.
Heater must be
connected to a properly
grounded electrical
source.
WARNING
Severe Injury Hazard
Turn off gas and electrical supply before
service.
Fan can start automatically at any time.
Failure to follow these instructions can
result in severe injury or product damage.