Marley Engineered Products M Series - Manual (Page 3)

3
OPTIONAL ACCESSORIES
Marley Engineered Product M series radiant heaters can be
field modified by adding optional kits. Refer to Figure 3 to select
the proper kit.
Portable Cart Kit
The portable cart kit can be used to convert a fixed overhead
unit into a portable heating device where a fixed installation is not
required. This kit includes wheels, legs, handle, grill(s), baffle (if
req'd) and all of the necessary hardware to complete the
modification. See instruction sheet 5200-2648-###. for details.
“CAUTION - Use of this kit presents certain hazards
including risks for fire or burns. Extreme care must be taken
when use of any Marley Engineered Products heater with this
kit. See Warnings in front of this manual for additional
details. As an added safety precaution, we strongly recom-
mend the Tip Over Kit and Grille Kit be used in conjunction
with the Portable Cart Kit. It will help reduce the risk of fire
if the heater and cart happen to fall over or if something hap-
pens to fall against the heater.”
Grill Kit
The grill kit consists of one (1.5, 2, 4.5 and 6 kW) or 2 grill
sections (13.5kW) and hardware to protect personnel from
coming into contact with hot radiant heating elements.
See instruction sheet 5200-2646-### for details.
Disconnect Kit
The disconnect kit consists of a complete assembly consisting
of a disconnect switch (3 Pole), power terminal block and all
hardware to complete the installation. This kit can be mounted to
both the fixed, overhead heater or the portable heater;
see instruction sheet 5200-2652-### for details.
Hanger Kit
Hanger kit model MHK include 24 feet of chain and four S
hooks to mount the unit in a fixed overhead position using the
universal mounting brackets included on the heater. This kit
allows installation distances from the ceiling of 2 feet to 6 feet.
See installation diagram Fig. 1 on page 2.
Cord Kits (Portable Only)
Cord kits consist of 25 feet of 90°C cable and a right angle
cord fitting which can connect directly to the heater terminal box
or disconnect switch (if used). See instruction sheet
5200-2647-### for details
Tip Over and Ground Fault Kits
TOS240 Series Kit attaches to portable heater and de-
energizes the heater in the event it is tipped over.
WMGF240 Series Kit mounts to wall that de-energizes heater
prior to element failure.
See instruction sheet 5200-2652-###.
MAINTENANCE
The heater requires no special maintenance other than occa-
sional cleaning to prevent excess accumulation of dust and lint on
surfaces. It is important for the reflectors to be kept clean to
obtain the maximum radiant output. If used as a movable unit, the
cart and cord should be checked periodically to make sure the
hardware remains tight and cart and cord are not damaged. Do
not continue to use the heater if damaged.
Element Replacement
1. Remove Terminal Box Cover.
2. Disconnect lead wires from heater terminals.
3. Remove safety grills (if installed).
4. Remove retainer screw located on the reflector at the terminal
end.
5. Loosen (2), 3/8" nuts from the terminal box bracket located on
the back of the heater and slide the entire heating element
assembly out of the reflector assembly.
6. Remove wires and jumper straps as required to replace the
failed heating element(s).
7. Remove bulkhead fitting nuts and washers.
8. Remove failed element and replace with a new element.
Replace only with genuine Chromalox "Arctic End" elements.
Use of other elements will cause excess temperatures inside
terminal box.
9. Place gasket on the bulkhead fitting and insert terminals and
fittings into the element holes in the terminal box.
10. Place washers and nuts on bulkhead fittings and tighten.
11. Replace wiring and jumper straps.
12. Reassemble by following the reverse procedures (steps 5
through 1).
ELECTRIC SHOCK HAZARD. Disconnect all power before
servicing or replacing heating elements.
a
Figure 3 – Optional Accessory Selection Guide
Grill Disconnect Wall Mount Portable
Model
Kit Kit Ground Fault Cart Kit**
M2081B Notify Factory
M2021B WG2 WMGF240 NA
M2041B WMGF480
M2061B Notify Factory
M4581B Notify Factory
M4521B WG45 WMGF240 M45
M4541B WMGF480
M4561B PDS60050 Notify Factory
M6083B Notify Factory
M6023B WMGF240
M6071B WG60 Notify Factory M60
M6043B WMGF480
M6063B Notify Factory
M13583B Notify Factory
M13523B WMGF240
M13571B WG135 Notify Factory M135
M13543B WMGF480
M13563B Notify Factory
PDS60050
Table 1 – HEATERSELECTION CHART
Reflector Element Ship Wire Ga. (Min.)
Model
Watts Volts Phase Angle Type Wt. Avail. 1 Ph 3 Ph
M2081B 208 NS 14 NA
M2021B 2000 240 1 18 lbs. S 14 NA
M2041B 480 NS 14 NA
M2061B 600 NS 14 NA
M4581B 208 NS 12 NA
M4521B 4500 240 1 18 lbs. S 12 NA
M4541B 480 S 14 NA
M4561B 600 NS 14 NA
M6083B 240 1 & 3 m NS 10 12
M6023B 208 1 & 3 S 10 12
M6071B 6000 240 1 25 lbs. NS 10 -
M6043B 480 1 & 3 S 12 12
M6063B 600 1 & 3 NS 12 12
M13583B 208 3 NS NR 10
M13523B 240 3 S NR 10
M13571B 13500 277 1 55 lbs. NS 8 -
M13543B 480 1 & 3 S 12 12
M13563B 600 1 & 3 NS 12 12
Note: Order model MHK Hanging Kit to mount M Series and N Series
infrared heaters. This kit comes complete with chain and hooks.
90˚ Symm
Metal
Sheath
WARNING
!