Troubleshooting Pada Filler Cooling Tower Dengan Penerapan Pco (Penyemprot Chemical Otomatis) Di Hotel Ra Suites Simatupang

ABSTRACT
The cooling tower is an essential component of the HVAC system at Hotel RA Suites Simatupang, functioning to remove heat from condenser water before it is recirculated in the cooling cycle. During the Industrial Internship at the Engineering Department, several problems were identified, including reduced cooling performance, scale and algae buildup, clogged nozzles, worn V-belts and bearings, and malfunctioning motorized automatic valves. This final project aims to identify the causes of these problems, determine their root causes, and develop corrective and preventive maintenance measures. The research employed the Root Cause Analysis (RCA) method, using the Fishbone Diagram to classify contributing factors and the 5 Why Analysis to identify the root causes. The results indicate that the main causes of cooling tower failures are inadequate preventive maintenance, poor water quality control, mechanical component wear, and water distribution problems. Corrective actions include cleaning the cooling tower components, replacing worn V-belts and bearings, repairing the motorized automatic valve, performing chemical treatment, and implementing a scheduled preventive maintenance program.
Keywords: Cooling Tower, Root Cause Analysis, Fishbone Diagram, 5 Why Analysis, Preventive Maintenance.
ABSTRAK
Cooling tower merupakan komponen penting dalam sistem HVAC Hotel RA Suites Simatupang yang berfungsi membuang panas dari air kondensor agar proses pendinginan berjalan optimal. Selama Praktik Industri di Departemen Engineering ditemukan beberapa gangguan, seperti penurunan kinerja pendinginan, penumpukan kerak dan lumut, penyumbatan nozzle, keausan V-belt dan bearing, serta gangguan pada motorized automatic valve. Tugas akhir ini bertujuan mengidentifikasi penyebab gangguan, menentukan akar penyebab, serta menyusun tindakan corrective maintenance dan preventive maintenance. Metode yang digunakan adalah Root Cause Analysis dengan Fishbone Diagram untuk mengelompokkan penyebab dan 5 Why Analysis untuk menentukan akar penyebab. Hasil analisis menunjukkan bahwa gangguan utama disebabkan oleh preventive maintenance yang belum optimal, kualitas air yang kurang terkontrol, keausan komponen, serta gangguan distribusi air. Tindakan perbaikan meliputi pembersihan komponen, penggantian V-belt dan bearing, perbaikan motorized automatic valve, chemical treatment, serta penerapan preventive maintenance secara berkala.
Kata Kunci: Cooling Tower, Root Cause Analysis, Fishbone Diagram, 5 Why Analysis, Preventive Maintenance.