NMC-WOLLARD TML-704H Maintenance Manual

PAGE 2-11
CHAPTER 2 MAINTENANCE
NMC-WOLLARD
2021 Truax Blvd. Eau Claire, WI 54703 ● P: 715-835-3151● F: 715-835-6625 ● www.nmc-wollard.com
TML-704H Maintenance Lift Manual No. 310547
2 TROUBLE SHOOTING
SEPTEMBER 01, 2015
2.10 PROBABLE CAUSES/REMEDIES BY CODE: ELECTRICAL
Code
Number
Probable Cause Test/Remedy
E1 Fuse blown Check for short circuit. Replace with fuse of
correct type and rating.
E2 Wiring disconnected or
open circuit
Check continuity from point to point. Check for
damaged or disconnected terminals.
E3 Bad ground connection Check and reconnect ground.
E4 Connector damaged Check for damaged, burned or open circuit pins or
sockets.
E5 Switch contact not
closing
Test switch. Replace or repair as required.
E6 Switch contacts
shorted
Test switch. Check for water inltration. Replace
or repair as required.
E7 Relay/solenoid coil
open circuit
Check coil. Replace if required.
E8 Relay/solenoid coil
short circuit
Test coil. Replace if required.
E9 Relay contacts not
closing
Test. Repair or replace as required.
E10 Relay contacts welded
shut
Test. Repair or replace as required.
E11 Limit switch not being
actuated properly
Check operation of mechanical linkage. Test for
contact closing or opening. Adjust or repair as
required.
E12 Bulb defective Check. Replace.
E13 Socket contacts dirty or
corroded
Clean or replace as required.
E14 Capacitor short circuit Check with meter on resistance range. If capacitor
shows a continuous low resistance, replace.
NOTE: Positive (+) lead on meter must be
connected to positive (+) terminal on capacitor.
E15 Capacitor open circuit Check with meter on resistance range. If meter
does not show any initial deection when
connected for the rst time, replace capacitor.
E16 Diode open circuit Check with meter on resistance range. Switch
meter leads to check polarities. If meter does NOT
deect approximately ½ scale for one polarity only,
replace diode.
E17 Diode short circuit Check as in #16 above. If meter reads low
resistance for both polarities, replace.
E18 Resistor defective Check resistance with meter after rst zeroing
meter. If resistance is not within +/- 15% of rated
value, replace resis tor. Test, replace if required.
E19 Meter defective Test, replace if required.
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NMC-WOLLARD TML-704H Specifications

General

Brand	NMC-WOLLARD
Model	TML-704H
Category	Lifting Systems
Language	English