TROUBLESHOOTING
To ensure coolant is flowing, check the outlet temperature.
If the coolant temperature along the return hose exceeds
60 °C (140 °F) or the pump produces a loud, rattling sound
during operation, it may indicate:
•
Air pockets are restricting flow. Air may collect due
to loops in hose, routing hose over the top of the
engine, excessive hose lengths, or kinks. Reroute
hoses or change port locations.
•
Contaminants in the coolant are restricting flow. Flush
coolant system and refill.
MAINTENANCE & PARTS
CAUTION
!
Electrical hazard:
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.
Personal injury:
If equipped with isolation valves, ensure
valves are open before energizing heater. Obstructed flow
may result in an unexpected release of heated coolant,
potentially causing serious injury.
PREVENTATIVE MAINTENANCE
Annually:
•
Check and replace cracked or weakened hoses.
•
Check electrical wiring for wear and excessive heat.
•
Remove element and clean element and tank.
Every three years or 25,000 hours of operation:
•
Replace control thermostat.
•
Replace contactor.
THERMOSTAT & ELEMENT
To replace the thermostat or clean tank:
(See Fig. 5)
|
page
4
installation
instructions
Hot
flow
®
csm
Heater
1.
Disconnect heater from power
source. Allow heating system
to cool.
2.
Remove element assembly
enclosure cover:
h
If cleaning tank, unscrew
wiring enclosure screws to
remove wiring enclosure.
Unscrew element plate screws.
Remove plate and element
from tank.
h
If replacing thermostat,
disconnect terminals from
thermostat sensing unit spade
connectors.
3.
Replace thermostat unit or
clean tank.
h
If replacing thermostat,
remove the two thermostat
mounting screws (T25) and
thermostat clip. Remove
thermostat. Ensure thermostat
recess is clean and free of
debris. Install new thermostat
in recess and secure using
new thermostat clip. Reinstall
and tighten clip screws.
h
If cleaning tank, ensure
element O-ring is in place.
4.
Reconnect electrical
connections. Reattach
enclosure, element plate,
O-rings and enclosure cover.
5.
Reconnect heater to power
source.
USER
SIGNAL
MAIN
ELEMENT ON
A
P
O
N
D
B
C
M
L
K
J
I
H
E
F
G
Figure 5. Cleaning element or
replacing thermostat (below) and
thermostat/element wiring detail
(right). Wiring and configuration
may vary.
Figure 4. Typical CSM Euro wiring schematic. See label attached to
control box lid for your specific wiring schematic.
A.
Element O-ring
B.
Enclosure gasket
C.
Wiring entrance
D.
Wiring conduit
E.
Enclosure lid gasket
F.
Enclosure cover
G.
Enclosure screws
H.
Thermostat screws
I.
Thermostat clip
J.
Thermostat
K.
Enclosure screws
L.
Retaining Ring
M.
Wiring enclosure
N.
Element plate screws
O.
Element assembly
P.
Tank
