Heating System Start-Up; Maintenance, Repair And Troubleshooting; Faults; Pressurized System Installation | 4 5 - Hotstart OXM Installation & Operation Manual

4 HEATING SYSTEM
START-UP
!
WARNING
Hazardous voltage: Before wiring, servicing or cleaning
the heating system, turn off the power and follow your
organization's lockout and tagout procedure. Failure
to do so could allow others to turn on the power
unexpectedly, resulting in harmful or fatal electrical
shock.
NOTICE
Pump damage: Do not run the motor/pump assembly
dry for more than a few seconds. Running a pump that
is not completely filled with fluid will cause damage to
the pump seal.
Proper heating operation: The high-limit temperature
control relay (TCR2) must be set at least 18 °F (10 °C)
higher than the control temperature control relay (TCR1)
for proper heating operation. This will prevent nuisance
tripping of the high-limit circuit.
1.
Check and tighten all electrical and plumbing
connections.
2.
Ensure isolation valves are open before energizing
the system.
3.
Check the pump for proper rotation. OOICE!
Do not run the motor/pump assembly dry for
more than a few seconds.
h
For three-phase heating systems, press and hold
the button while observing the rotation
prime
of the pump motor fan at the rear of the motor.
If the pump motor is not rotating in the correct
direction, switch any two electrical leads at the
main power terminal block. See SECOIO
h
Single-phase systems are prewired to ensure the
pump motor rotates in the correct direction.
4.
Bleed all trapped air from the heating system by
opening a plug or pipe fitting at or near the pump.
Press and hold the
remaining air in the lines.
OOE: When priming the pump, the pressure
gauge should indicate an increase in
pressure. Your system's operating pressure
may vary depending on the configuration
of the engine.
10
button to evacuate any
prime
5.
Turn the
remote
6.
Once operation is satisfactory, turn the control
dial on the temperature control relay TCR1 to
the desired temperature setting for engine oil.
HOTSTART recommends a control temperature on
TCR1 of 104 °F (40 °C). The high-limit temperature
setting on TCR2 should be set at 194 °F (90 °C).
See SECOIO
5 MAINTENANCE,
REPAIR AND
TROUBLESHOOTING
5.1

FAULTS

The fault light will display if:
•
The oil pump motor protection switch is
tripped (MPS1).
•
The oil high-limit temperature is exceeded
(TCR2).
A failure in the oil pump motor that
PRIME
causes the motor protection switch
(MPS1) to trip will shut down the
heating system. A fault signal will be
transmitted and the fault light will
illuminate. See Fig. 8. If this failure
occurs, the
local
switch must be switched to
the operator must press the MPS
reset/on button to reset the fault. (See
SECOIO 3.6.)
If there is a failure that causes a high temperature to
occur, the high-limit temperature controller (TCR2) will
2.5.
shut down the heating system, including the pump
motor. A fault signal will be transmitted and the fault
light will illuminate. To restart the system, the
/
off remote
back to
local
oil temperature drops below the high-limit preset (See
SECOIO 3.7.)
OOE: A high-limit fault can only occur when the
heating element is energized.
For additional troubleshooting, see SECOIO
installation
/ /
switch to
local off remote
to energize the heating system.
3.7 and SECOIO
OFF
LOCAL REMOTE
/ /
off remote
and
off
switch must be switched to
or to resume operation once the
remote
& | /
operation manual oxm
or
local
3.8.
FAULT
Figure 8. Fault
light as shown
on OXM/OGM
control box.
/
local
and then
off
5.5.
ogm heating system