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AEC/Appllcatlon Engineering
6
Preventive Maintenance
!! DANGER!!
BEFORE SERVICING:
1. DISCONNECT POWER.
2. LET THE UNIT COOL DOWN.
3. TURN OFF COOLING WATER.
FAILURE TO DO SO MAY RESULT IN
SERIOUS INJURY OR DEA THI
6-1
Routine Servicing
TDH units require little preventive maintenance and servicing. You should follow scheduled
maintenance to prevent costly repairs later.
Monthly or Every 500 Hours of Operation
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Adjust the tension on the pump drive belt. To do so, loosen the motor mounting bolts. Turn
the tensioning nuts on top of the motor mount so the belt has no more than 1 inch of play.
Make sure that the motor pulley is aligned with the pump pulley by using a straightedge,
then re-tighten the motor mounting bolts.
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Keep all surfaces free of dirt, oil, or debris.
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Lubricate the pump by gently injecting a high quality lithium grease into the grease fittings.
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Keep the pump clean. The pump seal relies on air circulation for cooling.
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Check the motor air intake screen for dirt accumulation; clean if required.
Every 3 Months
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Remove and clean the screen in the Y-strainer. You may want to check the screen more
frequently, as the actual interval check can vary with usage, fluid condition, etc .
TOH TrueTemp"" Serles Hot 011 Temperature Control Units
Page45
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