3.
Ensure isolation valves are
open
before energizing
the system.
4.
Bleed all trapped air from the heating system and
connecting plumbing by opening plugs or pipe
fittings as needed. Press and hold the
prime
button
to evacuate any remaining air in the lines.
NOTE:
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.
NOTE:
Remaining air may be evacuated from the
pump using the pump air bleed screw.
Unscrew the pump air bleed screw to vent
trapped air. Tighten screw once coolant
.
5.
Turn the
local
/
off
/
remote
switch to
local
to
energize the heating system.
6.
Turn the control dial on the temperature control
relay TCR1 to the desired temperature setting
for engine coolant. TCR1 is set to a control
temperature setting of 50 °C (122 °F) and TCR2 is
set to a high-limit setting of 90 °C (194 °F) at the
factory.
See
SECTION 3.2.2
and
7.
Turn the
local
/
off
/
remote
switch to
remote
to verify the 24 V DC remote on/off connection (if
used).
8.
Disconnect power to the heating system
and tighten all electrical connections.
See
SECTION 4.2.2
4
MAINTENANCE AND
TROUBLESHOOTING
4.1
SYSTEM FAULTS
A failure in the pump motor that causes the motor
protection switch (MPS1) to trip will shut down the
heating system. The
fault
light will illuminate and a
fault signal will be transmitted. If this failure occurs, the
local
/
off
/
remote
switch must be switched to
off
and the operator must press the MPS
reset
/
on
button
to reset the fault. (
See
SECTION 3.2.1.
)
If there is a failure that causes a high fluid temperature
to occur, the high-limit temperature controller (TCR2)
will shut down the heating system, including the pump
motor. The
fault
light will illuminate and a fault signal
will be transmitted. To restart the system, the
local
/
off
/
remote
switch must be switched to
off
and then
back to
local
or
remote
to resume operation once the
system has cooled back down. (
See
SECTION 3.2.3
)
For additional troubleshooting,
see
SECTION 4.5
4.1.1 FAULT SIGNALS
A fault signal will be transmitted if:
•
The pump motor protection switch is tripped
(MPS1).
•
The high-limit temperature is exceeded
(TCR2).
4.2
SYSTEM MAINTENANCE
4.2.1 PLUMBING CONNECTIONS
Periodically check plumbing connections for leaks and,
if necessary, tighten connections. A loose connection on
the suction side will cause a loss of flow and cavitation in
the pump. It can also pull air into the heating tank and
cause an element failure.
4.2.2 ELECTRICAL CONNECTIONS
Vibration and thermal cycling may cause terminals
to loosen. After initial first run, disconnect power and
tighten electrical connections (
see
SECTION 4.3
Check connections again in a week. Tighten all electrical
connections every three months.
4.2.3 SYSTEM MOUNTING
Vibration may cause mounting bolts to loosen.
Periodically check and tighten all mounting bolts.
A
Figure 9. CMM/CLM pump bleed screw (A). Unscrew bleed screw to
vent trapped air. Tighten screw once coolant begins to vent.
Summary of Contents for CLM
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