Carrier 50MP62L-10R, MPE62L-10R, 48MPD specifications Start-Upchecklist, I. Pre-Start-Up

	START-UP CHECKLIST
MODEL NO.:		SERIAL NO.:
DATE:		TECHNICIAN:

I. PRE-START-UP:

VERIFY THAT UNIT IS LEVEL

VERIFY THAT ALL PACKING MATERIALS HAVE BEEN REMOVED FROM UNIT

LOOSEN ALL SHIPPING HOLDDOWN BOLTS AND REMOVE SHIPPING BRACKETS PER INSTRUCTIONS VERIFY THAT COMPRESSOR SUSPENSION SPRINGS HAVE BEEN LOOSENED PER INSTRUCTIONS VERIFY ASSEMBLY OF ECONOMIZER HOOD

VERIFY INSTALLATION OF EXHAUST HOOD

VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS

VERIFY THAT POWER SUPPLY MATCHES UNIT DATA PLATE

VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT

CHECK GAS PIPING FOR LEAKS (48MP ONLY)

CHECK THAT INDOOR-AIR FILTERS ARE CLEAN AND IN PLACE

CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE, AND VERIFY SET SCREW IS TIGHT

VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED OPEN SUCTION, DISCHARGE, AND LIQUID LINE SERVICE VALVES

CHECK COMPRESSOR OIL LEVEL SIGHT GLASS AND VERIFY PROPER LEVEL

VERIFY THAT CRANKCASE HEATERS HAVE BEEN ENERGIZED FOR 24 HOURS

CHECK VOLTAGE IMBALANCE
LINE-TO-LINE VOLTS:	AB	V	AC		V	BC	V
(AB + AC + BC)/3 = AVERAGE VOLTAGE =				V
MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =						V
VOLTAGE IMBALANCE = 100 X (MAX DEVIATION)/(AVERAGE VOLTAGE) =								%
IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM!
CALL LOCAL POWER COMPANY FOR ASSISTANCE.

II.PRELIMINARY CHECKLIST ITEMS (DETERMINE BEFORE CONFIGURING CONTROLS):

CONTROL SETTINGS FOR NON-NETWORKED, FREESTANDING UNIT

UNIT TO BE OPERATED ON CONSTANT AIR VOLUME (CV) RATHER THAN VARIABLE-AIR VOLUME (VAV)

CONFIRM THAT SPACE TEMPERATURE SENSOR (T55) HAS BEEN WIRED CORRECTLY PER SPACE TEMPERATURE SENSOR (T55) SECTION ON PAGE 17.

CONFIRM THAT TUBING FOR SPACE AND SUPPLY DUCT PRESSURES HAS BEEN INSTALLED SET ENTHALPY CONTROL SET POINT ON ECONOMIZER

SET SUPPLY FAN AND ``CHECK FILTER'' STATUS SWITCHES FOR JOB REQUIREMENTS

UNIT OPTION CHECKLIST

ITEM	PRESENT?
A	CONSTANT VOLUME POWER EXHAUST
B	VARIABLE VOLUME POWER EXHAUST
C	VARIABLE FREQUENCY DRIVE ON SUPPLY FAN (VAV ONLY)
D	HOT GAS BYPASS
E	VAV WITH OCCUPIED HEAT

Manufacturer reserves the right to discontinue, or change at any time, speci®cations or designs without notice and without incurring obligations.

Book	1	1	PC 111	Catalog No. 534-893	Printed in U.S.A.	Form 48/50MP-1SI	CL-1	12-98	Replaces: 50MP-1SI
Tab	1a	1b