TM 9-4540-202-12&P
SECTION II. ORGANIZATIONAL PREVENTIVE MAINTENANCE CHECKS AND SERVICES
4-3. GENERAL
To insure that the immersion heater is ready for operation at all times, it must be inspected systematically so that defects
may be discovered and corrected before they result in serious damage or failure. The necessary preventive maintenance
checks and services to be performed by organizational maintenance personnel are listed and described in Table 4-1.
Defects discovered during operation of the unit shall be noted for future corrections to be made as soon as operation has
ceased. Stop operation immediately if a deficiency is noted during operation which would damage the equipment if
operation was continued. All deficiencies and shortcomings will be recorded, together with the corrective action taken, on
DA Form 2404, (Equipment Inspection and Maintenance Worksheet) at the earliest possible opportunity.
4-4. ORGANIZATIONAL PREVENTIVE MAINTENANCE CHECKS AND SERVICES
The preventive maintenance checks and services to be performed at the organizational level of maintenance are listed
and defined in Table 4-1. A quarterly interval, equal to three calendar months is recommended for usual operating
conditions. It should be noted that the Item Number column shown in the table is used as a source of item numbers for
the TM Number column on DA Form 2404 in recording results of PMCS.
Table 4-1. Organizational Preventive Maintenance Checks and Services
Procedure
For Readiness Reporting,
Item
Item To Be
Check for and have repaired,
Equipment Is
No.
Inspected
replaced, adjusted as necessary
Not Ready/Available if:
NOTE
Preventive maintenance services
are Identical for all Immersion
heater models except where
noted.
1
IMMERSION
Inspect for clean condition. If necessary
Dirty, rusty, missing or damaged
HEATER
dean all surfaces using a scouring pad
parts.
ASSEMBLY
(NSN 7920-00-753-5242) or by using
extra fine sandpaper. Clean all rust,
corrosion products, oil, grease, moisture,
dirt, loose and blistered paint, deterio-
rated areas from heater. Remove scale
from heater as follows:
4-2
